{"title":"Viessmann","description":"\u003cp\u003eViessmann delivers innovative boilers, combi boilers, water heaters, and heat pumps engineered for efficiency, reliability, and sustainability. With over a century of expertise, their advanced technology provides precise heating, low emissions, and long-lasting performance.\u003c\/p\u003e\n\u003cdiv style=\"width:100%; display:flex; justify-content:center; flex-wrap:wrap; gap:24px; padding:20px 16px;\"\u003e\n  \u003ca href=\"\/collections\/viessmann?filter.p.m.custom.secondary_category=Water+Boilers\" class=\"ap-btn\"\u003eWater Boilers\u003c\/a\u003e\n  \u003ca href=\"\/collections\/viessmann?filter.p.m.custom.secondary_category=Commercial+Boilers\" class=\"ap-btn\"\u003eCommercial Boilers\u003c\/a\u003e\n  \u003ca href=\"\/collections\/viessmann?filter.p.m.custom.secondary_category=Gas+Water+Heaters\" class=\"ap-btn\"\u003eGas Water Heaters\u003c\/a\u003e\n  \u003ca href=\"\/collections\/viessmann?filter.p.m.custom.secondary_category=Indirect+Water+Heaters\" class=\"ap-btn\"\u003eIndirect Water Heaters\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.ap-btn,\n.ap-btn:link,\n.ap-btn:visited {\n  display: inline-block;\n  padding: 12px 24px;\n  background-color: #f0efed !important;\n  color: #2d2d2d !important;\n  border: none !important;\n  border-radius: 50px;\n  font-size: 14px;\n  font-weight: 600;\n  text-decoration: none !important;\n  letter-spacing: 0.03em;\n  cursor: pointer;\n  transition: background-color 0.3s ease, color 0.3s ease;\n}\n.ap-btn:hover {\n  background-color: #b5a832 !important;\n  color: #2d2d2d !important;\n}\n\u003c\/style\u003e","products":[{"product_id":"viessmann-1-3-way-mixing-valve-7134743","title":"Viessmann 1\" 3-Way Mixing Valve - 7134743","description":"The 3-way mixing valve mixes cooler heating system\/circuit return water temperature into the hot water boiler supply to the heating loop circuit, the amount depending on the mixing blade position. The mixing valve has optimum water temperature control characteristics in any mixing blade position. Threaded NPT connections (female). The 3-way mixing valve can only be installed in the vertical position (to avoid airpockets and dirt build-up). If, however, there is any welding or soldering to be done around the mixing valve, the complete rotary insert must be removed to prevent damage to the O-ring seals. Remove the four hexagon bolts only, and the total assembly will slide out of the housing.","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932070576179,"sku":"VIES7134743","price":509.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VIESSMANN_7134743_1IN_3WAY_MIXING_VALVE.jpg?v=1772569809"},{"product_id":"viessmann-1-1-4-3-way-mixing-valve-7134744","title":"Viessmann 1-1\/4\" 3-Way Mixing Valve - 7134744","description":"The 3-way mixing valve mixes cooler heating system\/circuit return water temperature into the hot water boiler supply to the heating loop circuit, the amount depending on the mixing blade position. The mixing valve has optimum water temperature control characteristics in any mixing blade position. Threaded NPT connections (female). The 3-way mixing valve can only be installed in the vertical position (to avoid airpockets and dirt build-up). If, however, there is any welding or soldering to be done around the mixing valve, the complete rotary insert must be removed to prevent damage to the O-ring seals. Remove the four hexagon bolts only, and the total assembly will slide out of the housing.","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932070936627,"sku":"VIES7134744","price":570.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VIESSMANN_7134744_VIE7134744_L.jpg?v=1771885798"},{"product_id":"viessmann-type-160-80-44gpm-max-2-5-ansi-certified-flange-low-loss-header-7537705","title":"Viessmann Type 160\/80 44GPM Max 2.5\" ANSI Certified Flange Low Loss Header - 7537705","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932071559219,"sku":"VIES7537705","price":1704.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_7fe932a9-6fa5-44c4-916c-64bcf2f8d9d4.jpg?v=1771885824"},{"product_id":"viessmann-type-200-120-80gpm-max-3-ansi-certified-flange-low-loss-header-7537706","title":"Viessmann Type 200\/120 80GPM Max 3\" ANSI Certified Flange Low Loss Header - 7537706","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932072411187,"sku":"VIES7537706","price":2066.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_8a4ba585-b030-4bb9-893c-eddc767a5140.jpg?v=1771885906"},{"product_id":"viessmann-type-250-150-119gpm-max-4-ansi-certified-flange-low-loss-header-7537707","title":"Viessmann Type 250\/150 119GPM Max 4\" ANSI Certified Flange Low Loss Header - 7537707","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126412851,"sku":"VIES7537707","price":2797.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_c6841d7c-ea27-4b3d-8962-42689714d386.jpg?v=1771885870"},{"product_id":"viessmann-type-300-200-189gpm-max-5-ansi-certified-flange-low-loss-header-7537708","title":"Viessmann Type 300\/200 189GPM Max 5\" ANSI Certified Flange Low Loss Header - 7537708","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126543923,"sku":"VIES7537708","price":3176.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_048f5c56-f50d-4ef9-a30f-672c337ace3b.jpg?v=1771885878"},{"product_id":"viessmann-type-400-200-251gpm-max-6-ansi-certified-flange-low-loss-header-7537709","title":"Viessmann Type 400\/200 251GPM Max 6\" ANSI Certified Flange Low Loss Header - 7537709","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126642227,"sku":"VIES7537709","price":4165.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_94a635a1-7c73-4235-9839-730a39fcc7c8.jpg?v=1771885910"},{"product_id":"viessmann-vitodens-200-w-80-000-btu-gas-fired-wall-mounted-condensing-boiler-7722778","title":"Viessmann Vitodens 200-W 80,000 BTU Gas Fired Wall Mounted Condensing Boiler - 7722778","description":"\u003ch2\u003eLevel Up To Smart, Quiet Heat With The Viessmann Vitodens 200‑W B2HE‑85 | 80,000 BTU Wall‑Hung Condensing Boiler (7722778)\u003c\/h2\u003e\n\n\n\u003cp\u003e\nWant premium comfort without the floor‑space footprint? The \u003cstrong\u003eVitodens 200‑W B2HE‑85\u003c\/strong\u003e is a \u003cstrong\u003eheating‑only, wall‑mounted gas condensing boiler\u003c\/strong\u003e that pairs a proven \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX‑Plus burner\u003c\/strong\u003e with smart controls. It delivers up to \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, a wide \u003cstrong\u003e8.5–85 MBH\u003c\/strong\u003e input range, and an industry‑leading \u003cstrong\u003eup to 14:1 turndown\u003c\/strong\u003e for steady comfort and lower fuel use. A built‑in \u003cstrong\u003e7\" color touchscreen\u003c\/strong\u003e, onboard WiFi and the \u003cstrong\u003eViCare\u003c\/strong\u003e app make everyday operation simple.\n\u003c\/p\u003e\n\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722778 (Vitodens 200‑W B2HE‑85, Heating‑Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing Hydronic Boiler (Heating‑Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (switch in software; no conversion kit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 8,500–85,000 BTU\/h\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 70,000 BTU\/h\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e Up to 14:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e Inox‑Radial stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner:\u003c\/strong\u003e Stainless MatriX‑Plus cylinder burner with Lambda Pro\/Pro Plus combustion control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e 7\" color touchscreen, outdoor reset, built‑in WiFi (ViCare app)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump:\u003c\/strong\u003e High‑efficiency ECM boiler circulator (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 45 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting (Coaxial):\u003c\/strong\u003e 80\/125 mm concentric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting (Two‑Pipe):\u003c\/strong\u003e 3\" PP\/CPVC with long‑run capability (layout dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 3\/4\" NPT supply \u0026amp; return\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensate Drain:\u003c\/strong\u003e 3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz, 1‑phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e 17‑3\/4\" × 19‑3\/4\" × 33‑3\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~108 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions:\u003c\/strong\u003e \u0026lt; 20 ppm NOx (at 3% O\u003csub\u003e2\u003c\/sub\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch4\u003eHigh Efficiency, Lower Fuel Use\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003e95% AFUE\u003c\/strong\u003e and up to a \u003cstrong\u003e14:1 turndown\u003c\/strong\u003e, the Vitodens 200‑W matches output to your home’s demand—reducing short‑cycling and helping cut gas bills while keeping rooms consistently comfortable.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eSmart, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nViessmann’s \u003cstrong\u003eMatriX‑Plus burner\u003c\/strong\u003e with \u003cstrong\u003eLambda Pro\/Pro Plus\u003c\/strong\u003e automatically tunes combustion for gas quality, vent length, and altitude—delivering quiet operation and \u003cstrong\u003elow NOx\u003c\/strong\u003e performance.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eQuiet, Space‑Saving Wall Mount\u003c\/h4\u003e\n\u003cp\u003e\nA slim \u003cstrong\u003e17‑3\/4\"‑wide\u003c\/strong\u003e cabinet and front‑access components simplify installs and annual service. Zero‑clearance design makes it easier to fit tight mechanical rooms.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eFlexible Venting For Tricky Layouts\u003c\/h4\u003e\n\u003cp\u003e\nChoose \u003cstrong\u003e80\/125 mm concentric\u003c\/strong\u003e or \u003cstrong\u003e3\" two‑pipe\u003c\/strong\u003e venting with generous equivalent lengths (configuration‑dependent), so you can route flue and intake through a sidewall or roof to suit the space.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eReady For Indirect Hot Water \u0026amp; Multi‑Zone Control\u003c\/h4\u003e\n\u003cp\u003e\nPair the heating‑only B2HE‑85 with a \u003cstrong\u003eVitocell\u003c\/strong\u003e or other indirect tank for abundant domestic hot water. The onboard control supports outdoor reset and can coordinate multiple heating circuits with the right accessories.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126740531,"sku":"VIES7722778","price":5462.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitodens_100-w_2.jpg?v=1771885422"},{"product_id":"viessmann-vitocell-300-b-79-gallon-dual-coil-indirect-fired-domestic-water-heater-7720336","title":"Viessmann Vitocell 300-B 79 Gallon Dual Coil Indirect Fired Domestic Water Heater - 7720336","description":"\u003ch2\u003eEnjoy Solar‑Ready, Hygienic Hot Water With The Viessmann Vitocell 300‑B 79‑Gallon Dual‑Coil Stainless Steel Indirect Water Heater (7720336)\u003c\/h2\u003e\n\n\n\u003cp\u003e\nWant fast, consistent hot water for showers, laundry, and the kitchen—without the upkeep of a traditional glass‑lined tank? The \u003cstrong\u003eViessmann Vitocell 300‑B\u003c\/strong\u003e (model \u003cstrong\u003e7720336\u003c\/strong\u003e) is a \u003cstrong\u003e79‑gallon, dual‑coil indirect water heater\u003c\/strong\u003e built from \u003cstrong\u003ehigh‑grade stainless steel\u003c\/strong\u003e for long service life and clean, hygienic hot water. It’s \u003cstrong\u003esolar‑ready\u003c\/strong\u003e with two internal coils: one for your boiler and one for solar (or heat pump) input, delivering excellent recovery and premium efficiency.\n\u003c\/p\u003e\n\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7720336 (Vitocell 300‑B, EVBA 79 USG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual‑Coil Indirect‑Fired DHW Storage Tank (Solar‑Ready)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Capacity:\u003c\/strong\u003e 79 Gallons (300 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Material:\u003c\/strong\u003e High‑grade Stainless Steel (no sacrificial anode required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation:\u003c\/strong\u003e Rigid PUR foam; low standby heat loss (~0.6°F\/hr)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Exchanger Coils:\u003c\/strong\u003e Two internal stainless coils (upper = boiler; lower = solar\/heat pump)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Surface Area:\u003c\/strong\u003e ~16 ft² (1.5 m²) total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Volume:\u003c\/strong\u003e ~2.9 Gallons (11 L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAHRI Ratings (Coils In Parallel, 180°F Supply):\u003c\/strong\u003e First Hour 496 GPH; Continuous 429 GPH; First Draw 67 Gal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Working Pressure (DHW):\u003c\/strong\u003e 150 psig (210°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Working Pressure (Coils):\u003c\/strong\u003e 220 psig (392°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e 1″ male NPT for coils, domestic hot\/cold, and recirculation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × Tilt):\u003c\/strong\u003e ~29″ diameter × 68″ height; ~72″ tilt height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (With Insulation):\u003c\/strong\u003e ~249 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e AHRI rated; CSA Low Lead \/ NSF\/ANSI 372 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch4\u003eStainless Steel Tank, No Anode To Replace\u003c\/h4\u003e\n\u003cp\u003e\nUnlike glass‑lined tanks, the Vitocell 300‑B uses a \u003cstrong\u003ehomogeneous stainless steel cylinder\u003c\/strong\u003e—so there’s \u003cstrong\u003eno sacrificial anode\u003c\/strong\u003e to check or replace. That means less maintenance and consistently clean domestic hot water.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eDual‑Coil, Solar‑Ready Design\u003c\/h4\u003e\n\u003cp\u003e\nTwo generous internal coils make it easy to integrate \u003cstrong\u003esolar thermal\u003c\/strong\u003e (or a heat pump) alongside your boiler. The lower coil harvests solar heat; the upper coil quickly \u003cstrong\u003eboosts temperature\u003c\/strong\u003e from the boiler when demand spikes or the weather is cloudy.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eHigh Recovery For Busy Homes\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003eAHRI‑certified performance up to 496 GPH first‑hour rating\u003c\/strong\u003e (coils in parallel; 180°F supply), this \u003cstrong\u003e79‑gallon\u003c\/strong\u003e indirect delivers steady, back‑to‑back hot water for bathrooms, laundry, and the kitchen—ideal for multi‑bath homes.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eComfortable, Efficient, And Quiet\u003c\/h4\u003e\n\u003cp\u003e\nThick \u003cstrong\u003ePUR foam insulation\u003c\/strong\u003e keeps standby losses low (about \u003cstrong\u003e0.6°F per hour\u003c\/strong\u003e), helping your system use less energy to maintain temperature. No burner or fan in the tank means whisper‑quiet operation.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eInstaller‑Friendly Layout\u003c\/h4\u003e\n\u003cp\u003e\nStandard \u003cstrong\u003e1″ NPT\u003c\/strong\u003e connections for DHW, recirculation, and coils streamline piping. A compact \u003cstrong\u003e~29″ diameter\u003c\/strong\u003e and \u003cstrong\u003e~68″ height\u003c\/strong\u003e simplify placement in mechanical rooms, and integrated \u003cstrong\u003esensor wells and thermometers\u003c\/strong\u003e speed up commissioning.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126707763,"sku":"VIES7720336","price":5115.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitocell_300-v_white_1280x1280_b3463ada-a774-4326-8e70-fd9a19b25edd.png?v=1771885311"},{"product_id":"viessmann-type-200-120-80gpm-max-3-flange-low-loss-header-7834471","title":"Viessmann Type 200\/120 80GPM Max 3\" Flange Low Loss Header - 7834471","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126871603,"sku":"VIES7834471","price":2362.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_6d1d9a54-5f4d-4861-b4c7-81b764cbdaf9.jpg?v=1771885305"},{"product_id":"viessmann-type-450-250-374gpm-max-8-ansi-certified-flange-low-loss-header-7537710","title":"Viessmann Type 450\/250 374GPM Max 8\" ANSI Certified Flange Low Loss Header - 7537710","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126806067,"sku":"VIES7537710","price":5813.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_f486528a-e7c5-4adc-9d50-f7c8706afb67.jpg?v=1771885292"},{"product_id":"viessmann-type-160-80-44gpm-max-2-5-flange-low-loss-header-7834470","title":"Viessmann Type 160\/80 44GPM Max 2.5\" Flange Low Loss Header - 7834470","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126904371,"sku":"VIES7834470","price":1837.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_1b7911f5-ce10-41ac-bbec-9ab77bdff89b.jpg?v=1771885315"},{"product_id":"viessmann-type-300-200-189gpm-max-5-flange-low-loss-header-7834473","title":"Viessmann Type 300\/200 189GPM Max 5\" Flange Low Loss Header - 7834473","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126937139,"sku":"VIES7834473","price":3284.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_0b3b0f4c-6864-45ed-ab64-2870313085e6.jpg?v=1771885408"},{"product_id":"viessmann-type-500-300-484gpm-max-8-ansi-certified-flange-low-loss-header-7537711","title":"Viessmann Type 500\/300 484GPM Max 8\" ANSI Certified Flange Low Loss Header - 7537711","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932127035443,"sku":"VIES7537711","price":6896.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_2cc4c6db-c501-4292-b6d4-3bf63a4cedb0.jpg?v=1771885297"},{"product_id":"viessmann-type-250-150-119gpm-max-4-flange-low-loss-header-7834472","title":"Viessmann Type 250\/150 119GPM Max 4\" Flange Low Loss Header - 7834472","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932126969907,"sku":"VIES7834472","price":2975.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_9ce9ced8-f570-4990-86f1-da8928f12852.jpg?v=1771885315"},{"product_id":"viessmann-type-400-200-251gpm-max-6-flange-low-loss-header-7834474","title":"Viessmann Type 400\/200 251GPM Max 6\" Flange Low Loss Header - 7834474","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932127789107,"sku":"VIES7834474","price":3859.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_e8d6a46b-06cb-480c-b212-2a4b2a0f84e5.jpg?v=1771885418"},{"product_id":"viessmann-type-450-250-374gpm-max-8-flange-low-loss-header-7834475","title":"Viessmann Type 450\/250 374GPM Max 8\" Flange Low Loss Header - 7834475","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932127723571,"sku":"VIES7834475","price":6367.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_63e31744-ea9b-429d-b84f-6521d72bdd3d.jpg?v=1771885427"},{"product_id":"viessmann-type-500-300-484gpm-max-8-flange-low-loss-header-7834476","title":"Viessmann Type 500\/300 484GPM Max 8\" Flange Low Loss Header - 7834476","description":"When used in conjunction with Viessmann boilers, the low-loss header acts as hydraulic break, decoupling boiler and system circuits from each other. The low-loss header increases operational efficiency. In addition, the low-loss header helps eliminate debris from the heating system. The common supply temperature sensor located of the low-loss header connects to the Vitocontrol-S controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. The low-loss header must be used in multiple Vitodens 200 installations (maximum of 4 boilers).","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128084019,"sku":"VIES7834476","price":7702.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_89d7a099-38d7-4624-8362-9671fbb31f87.jpg?v=1771885433"},{"product_id":"viessmann-vitodens-200-w-285-000-btu-gas-fired-wall-mounted-condensing-boiler-b2ha285","title":"Viessmann Vitodens 200-W 285,000 BTU Gas Fired Wall Mounted Condensing Boiler - B2HA285","description":"\u003ch2\u003eTurn Big‑Demand Heating Into Everyday Comfort With The Viessmann Vitodens 200‑W B2HA‑285 | 285,000 BTU Wall‑Hung Condensing Boiler\u003c\/h2\u003e\n\n\n\u003cp\u003e\nUpgrading a larger home or light‑commercial space? The \u003cstrong\u003eVitodens 200‑W B2HA‑285\u003c\/strong\u003e is a \u003cstrong\u003ewall‑mounted, gas‑fired condensing boiler\u003c\/strong\u003e that brings high output and smart control together in a compact footprint. It modulates from \u003cstrong\u003e71,000 to 285,000 BTU\/h\u003c\/strong\u003e to match real‑world loads, delivers \u003cstrong\u003e92% AFUE\u003c\/strong\u003e, and uses Viessmann’s proven \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e with the \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e and \u003cstrong\u003eLambda Pro\u003c\/strong\u003e combustion management for efficient, clean performance.\n\u003c\/p\u003e\n\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e B2HA‑285 (Vitodens 200‑W)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Condensing Gas Boiler (Heating‑Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or Propane (no conversion kit required; see manual for setup)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 71,000–285,000 BTU\/h\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 92%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulation Ratio:\u003c\/strong\u003e Up to 6.5:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e Inox‑Radial Stainless Steel (self‑cleaning design)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner:\u003c\/strong\u003e Stainless Steel MatriX Cylinder Burner with Lambda Pro combustion control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Advanced Viessmann control with outdoor reset; large on‑board display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Connectivity:\u003c\/strong\u003e ViCare app via optional Vitoconnect WiFi module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 60 psig\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Direct‑vent sealed combustion; concentric 100\/150 mm (≈4\"\/6\") or two‑pipe systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Equivalent Vent Length:\u003c\/strong\u003e Up to ~180 ft (layout dependent; see manual)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 1‑1\/2\" NPT supply \u0026amp; return\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" or 1\" NPT (per installation; see manual)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~19\" × 21\" × 43.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~194 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCascade\/Common Venting:\u003c\/strong\u003e Cascade up to 8 boilers; common‑vent options available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch4\u003eHigh Output, Right‑Sized Efficiency\u003c\/h4\u003e\n\u003cp\u003e\nThe B2HA‑285’s wide modulation range—\u003cstrong\u003e71 to 285 MBH\u003c\/strong\u003e—helps it run steadily through mild shoulder seasons and ramp up for peak winter demand. That means fewer starts and stops, quieter operation, and fuel savings over time.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eStainless Steel Core For Long Service Life\u003c\/h4\u003e\n\u003cp\u003e\nViessmann’s \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e paired with the \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e is engineered for long‑term efficiency. The self‑cleaning heat‑exchanger geometry helps shed condensate and reduce scaling.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eSmart, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nThe \u003cstrong\u003eLambda Pro\u003c\/strong\u003e combustion system automatically adapts to gas quality and vent conditions to maintain efficient, low‑NOx combustion—reducing setup time and keeping performance dialed‑in season after season.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eCompact, Installer‑Friendly Design\u003c\/h4\u003e\n\u003cp\u003e\nA slim \u003cstrong\u003e~19‑inch‑wide\u003c\/strong\u003e cabinet and front‑access components simplify installs and annual service. With \u003cstrong\u003edirect‑vent\u003c\/strong\u003e options and \u003cstrong\u003event runs up to ~180 ft\u003c\/strong\u003e (configuration‑dependent), the 200‑W is flexible for retrofits and new builds.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eReady For Indirect Hot Water \u0026amp; Multi‑Boiler Cascades\u003c\/h4\u003e\n\u003cp\u003e\nPair the heating‑only B2HA‑285 with a \u003cstrong\u003eVitocell\u003c\/strong\u003e indirect tank for abundant domestic hot water. For larger loads, you can cascade up to \u003cstrong\u003eeight\u003c\/strong\u003e Vitodens 200‑W units and common‑vent where permitted.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932127985715,"sku":"VIESB2HA285","price":9468.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HA_front_1280x1280_transparent.png?v=1771885472"},{"product_id":"viessmann-type-160-80-low-loss-header-insulation-7834480","title":"Viessmann Type 160\/80 Low Loss Header Insulation - 7834480","description":"Insulation for Viessmann Type 160\/80 Low Loss Headers","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932128215091,"sku":"VIES7834480","price":835.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_827dd8d2-28e4-4aad-aa10-cf74ba60d179.jpg?v=1771885441"},{"product_id":"viessmann-vitodens-200-w-399-000-btu-gas-fired-wall-mounted-condensing-boiler-b2ha399","title":"Viessmann Vitodens 200-W 399,000 BTU Gas Fired Wall Mounted Condensing Boiler - B2HA399","description":"\u003ch2\u003eViessmann Vitodens 200‑W B2HA‑399 | 399,000 BTU Wall‑Mounted Gas Condensing Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nWant big boiler performance without taking up floor space? The \u003cstrong\u003eVitodens 200‑W B2HA‑399\u003c\/strong\u003e is a \u003cstrong\u003ewall‑mounted, high‑efficiency gas condensing boiler\u003c\/strong\u003e built for larger homes and light‑commercial projects. It modulates smoothly from \u003cstrong\u003e113–399 MBH\u003c\/strong\u003e to match real‑world demand, and its \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e helps keep efficiency high season after season.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e B2HA‑399 (Vitodens 200‑W)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Category IV Condensing Gas Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (conversion kit available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 113–399 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Output (Typical):\u003c\/strong\u003e up to ~375 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e ~94%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModulation:\u003c\/strong\u003e Up to ~6.5:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e 316Ti Inox‑Radial Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCombustion Control:\u003c\/strong\u003e Lambda Pro with Fully Modulating MatriX Cylinder Burner\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Direct‑vent sealed combustion or room‑air (per code)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Options:\u003c\/strong\u003e Concentric 100\/150 mm (≈4\"\/6\") or Two‑Pipe Systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Equivalent Vent Lengths:\u003c\/strong\u003e Generous runs (layout‑dependent; see manual)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 2\" NPT supply\/return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 1\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz; outdoor temperature sensor included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Vitotronic 200 (HO1B) with outdoor reset and diagnostics\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~23‑5\/8\" × 27\" × 44‑1\/2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearances:\u003c\/strong\u003e 0\" to combustibles at vent; service clearances per manual\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCascade Capability:\u003c\/strong\u003e Common‑vent\/manifold options; up to 8 boilers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nThe fully modulating \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e and \u003cstrong\u003eLambda Pro\u003c\/strong\u003e combustion control keep the air‑to‑fuel mix dialed in—even when gas quality varies—helping the system run efficiently and cleanly.\n\u003c\/p\u003e\n\n\u003ch4\u003eBig Output, Right‑Sized Modulation\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003e113–399 MBH\u003c\/strong\u003e input and up to \u003cstrong\u003e~6.5:1\u003c\/strong\u003e modulation, the 200‑W can idle on \u003cstrong\u003emilder spring\/fall days\u003c\/strong\u003e and ramp up for peak demand. That reduces short‑cycling, improves comfort, and helps components last.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Wall‑Hung Footprint\u003c\/h4\u003e\n\u003cp\u003e\nA cabinet roughly \u003cstrong\u003e24\" wide × 27\" deep × 44‑1\/2\" high\u003c\/strong\u003e saves floor space in tight mechanical rooms. Front‑access design keeps annual service straightforward for your contractor.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Venting For Retrofits\u003c\/h4\u003e\n\u003cp\u003e\nChoose \u003cstrong\u003econcentric 100\/150 mm (≈4\"\/6\")\u003c\/strong\u003e or \u003cstrong\u003etwo‑pipe\u003c\/strong\u003e systems with generous equivalent lengths. Use direct‑vent sealed combustion or draw room air where code allows.\n\u003c\/p\u003e\n\n\u003ch4\u003eOutdoor‑Reset Intelligence\u003c\/h4\u003e\n\u003cp\u003e\nThe integrated \u003cstrong\u003eVitotronic 200\u003c\/strong\u003e control with \u003cstrong\u003eoutdoor reset\u003c\/strong\u003e automatically adjusts water temperature to the weather, helping lower fuel use while keeping rooms comfortable.\n\u003c\/p\u003e\n\n\u003ch4\u003eCascade‑Ready For Larger Loads\u003c\/h4\u003e\n\u003cp\u003e\nNeed more capacity? Manifold up to \u003cstrong\u003eeight Vitodens 200‑W\u003c\/strong\u003e units with common venting. The system stages boilers only as needed to match the load and maintain high efficiency.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128182323,"sku":"VIESB2HA399","price":11415.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HA_front_1280x1280_transparent_76c7044c-f7c8-47ef-8c09-ccfe2e8672c1.png?v=1771885478"},{"product_id":"viessmann-vitodens-200-w-352-000-btu-gas-fired-condensing-boiler-less-manifold-b2hah65","title":"Viessmann Vitodens 200-W 352,000 BTU Gas Fired Condensing Boiler less Manifold - B2HAH65","description":"\u003ch2\u003eOutfit Your System With Viessmann B2HAH65 Vitodens 200-W 352k BTU Multi-Boiler Package (Less Manifold)\u003c\/h2\u003e \u003cp\u003e Need serious heat with built-in redundancy for large homes or light commercial spaces? The \u003cstrong\u003eViessmann B2HAH65\u003c\/strong\u003e package delivers two wall-hung \u003cstrong\u003eVitodens 200-W B2HA 352k\u003c\/strong\u003e condensing boilers for high output, quiet operation, and reliable staging—without the factory manifold, so you can build your own primary loop to suit the job. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e B2HAH65\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Two-Boiler Package (Less Manifold), Gas-Fired Wall-Mounted Condensing Boilers\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 2 × 352,000 BTU\/h input (704,000 BTU\/h total)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless-steel Inox-Radial heat exchanger; MatriX modulating cylinder burner\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Up to 94.5% CSA thermal efficiency; modulation up to 6.5:1 per boiler; altitude operation up to 10,000 ft\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e Direct vent (coaxial or two-pipe); max vent runs up to 131 ft (layout-dependent); common venting up to 4 boilers; 120 VAC, 60 Hz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Two Vitodens 200-W B2HA 352k boilers; \u003cem\u003eno prefabricated manifold\/header\u003c\/em\u003e (package is “less manifold”); controls\/accessories vary by configuration—see manual\/price list\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ASME Section IV \u0026amp; CSA B51 construction; tested to AHRI BTS-2000; NG\/LP convertible\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Viessmann limited warranty; terms vary by application (see manufacturer)\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Fuel With High Efficiency\u003c\/h4\u003e \u003cp\u003eThe Vitodens 200-W line is rated up to 94.5% thermal efficiency, helping cut operating costs while delivering consistent comfort across large zones. Staged firing further reduces short-cycling and fuel waste.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eEach boiler modulates up to 6.5:1 for smooth, quiet heat delivery. Running two units provides 704k BTU\/h total input and built-in redundancy—ideal for critical spaces that can’t go cold.\u003c\/p\u003e \u003ch4\u003eBuilt To Last\u003c\/h4\u003e \u003cp\u003eViessmann’s Inox-Radial stainless-steel heat exchanger and MatriX cylinder burner are engineered for durability, clean combustion, and low maintenance over years of service.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Flexibility\u003c\/h4\u003e \u003cp\u003eDirect-vent options (coaxial or twin-pipe) with long permitted runs, plus support for common venting up to four boilers, streamline vent design. “Less manifold” lets you configure your own primary loop and headers for custom hydraulics.\u003c\/p\u003e \u003ch4\u003eSmart Controls \u0026amp; Compatibility\u003c\/h4\u003e \u003cp\u003eVitodens 200-W supports advanced outdoor reset and cascade control architectures to coordinate multiple boilers and mixed-temperature circuits—so the plant runs efficiently across changing loads.\u003c\/p\u003e \n\u003cp\u003e Want to learn more about this boiler? Read more about it in our article on \u003ca href=\"https:\/\/plumbing-deals.com\/blogs\/plumbing-blog\/the-best-steam-boilers-of-2025-a-comprehensive-guide\"\u003ethe best steam boilers.\u003c\/a\u003e\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128149555,"sku":"VIESB2HAH65","price":26433.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_-B2HA-Cascade_1280x1280_transparent.png?v=1771885494"},{"product_id":"viessmann-vitocrossal-200-399-000-btu-ci2-floor-standing-gas-condensing-boiler-ci2399","title":"Viessmann Vitocrossal 200 399,000 BTU CI2 Floor Standing Gas Condensing Boiler - CI2399","description":"\u003ch2\u003eViessmann Vitocrossal 200 CI2‑399 | 399,000 BTU Floor‑Standing Gas Condensing Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nLooking for big output in a compact footprint? The \u003cstrong\u003eVitocrossal 200 CI2‑399\u003c\/strong\u003e is a \u003cstrong\u003efloor‑standing, high‑efficiency gas condensing boiler\u003c\/strong\u003e that’s easy to live with and easy to service. It modulates from \u003cstrong\u003e50–399 MBH\u003c\/strong\u003e (≈\u003cstrong\u003e8:1 turndown\u003c\/strong\u003e) to match real‑world loads, and its \u003cstrong\u003eInox‑Crossal\u003c\/strong\u003e stainless‑steel heat exchanger helps keep efficiency high year after year.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e CI2399 (Vitocrossal 200, CI2‑399)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Floor‑Standing, Category IV Condensing Gas Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas (LP conversion kit available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 50–399 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Output (Max):\u003c\/strong\u003e 391 MBH (up to ~98% thermal efficiency, system‑dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 340 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e ~8:1 (series capable up to 30:1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 80 psig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Limits:\u003c\/strong\u003e 185°F auto‑reset (max 194°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAltitude:\u003c\/strong\u003e Up to 10,000 ft (electronic setting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNOx Emissions:\u003c\/strong\u003e \u0026lt; 20 ppm @ 3% O\u003csub\u003e2\u003c\/sub\u003e (NG)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Flow (Typical):\u003c\/strong\u003e ~39 GPM @ 20°F ΔT (min ~8 GPM @ 100°F ΔT)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Direct‑vent or room‑air (per code), Category IV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent\/Intake Size:\u003c\/strong\u003e 4\" flue collar \/ 4\" combustion air\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApproved Vent Materials:\u003c\/strong\u003e Polypropylene (PP(s)) or AL29‑4C stainless\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Connections:\u003c\/strong\u003e 2\" NPT (supply\/return) or 2\" ANSI flanges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 1‑1\/2\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz; ~352 W max (no pumps), 17 W standby\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Integrated 7\" color touchscreen with communications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~35‑3\/4\" × 29‑1\/2\" × 64‑1\/2\" cabinet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearances (Service):\u003c\/strong\u003e 27\" sides, 31\" back, 39\" front (0\" to combustibles)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ANSI\/AHRI 1500; ANSI Z21.13\/CSA 4.9; SCAQMD 1146.2; BAAQMD Reg 9 Rule 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nThe MatriX cylinder burner and \u003cstrong\u003eInox‑Crossal\u003c\/strong\u003e heat‑exchange surfaces support \u003cstrong\u003eup to ~98% thermal efficiency\u003c\/strong\u003e (with cool return temps) and \u003cstrong\u003elow NOx (\u0026lt; 20 ppm)\u003c\/strong\u003e for compliant, cost‑effective operation.\n\u003c\/p\u003e\n\n\u003ch4\u003eRight‑Sized Modulation For Real‑World Loads\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003e50–399 MBH\u003c\/strong\u003e input (≈\u003cstrong\u003e8:1\u003c\/strong\u003e turndown), CI2‑399 can cruise on \u003cstrong\u003emilder spring\/fall days\u003c\/strong\u003e and ramp up for design conditions—reducing cycling, improving comfort, and helping save fuel.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Retrofit‑Friendly Design\u003c\/h4\u003e\n\u003cp\u003e\nA small footprint and service‑friendly layout fit tight mechanical rooms. The cabinet is designed to move through standard doorways, making replacements and modernizations simpler in multi‑family, schools, and custom homes.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Venting \u0026amp; Materials\u003c\/h4\u003e\n\u003cp\u003e\nUse \u003cstrong\u003edirect‑vent\u003c\/strong\u003e sealed combustion or draw room air per code. The boiler accepts \u003cstrong\u003e4\" PP(s)\u003c\/strong\u003e or \u003cstrong\u003eAL29‑4C stainless\u003c\/strong\u003e systems certified for Category IV.\n\u003c\/p\u003e\n\n\u003ch4\u003eSimple, Smart Controls\u003c\/h4\u003e\n\u003cp\u003e\nAn integrated \u003cstrong\u003e7\" color touchscreen\u003c\/strong\u003e speeds commissioning and diagnostics. It supports outdoor reset, DHW with storage tanks, and integration into larger systems.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128313395,"sku":"VIESCI2399","price":12571.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitocrossal_200-ci2_front_1280x1280_49ffabf0-2b60-49c7-a9da-dc2dd897c9f7.png?v=1771885495"},{"product_id":"viessmann-vitodens-200-w-199-000-btu-gas-fired-wall-mounted-condensing-boiler-7722781","title":"Viessmann Vitodens 200-W 199,000 BTU Gas Fired Wall Mounted Condensing Boiler - 7722781","description":"\u003ch2\u003eViessmann Vitodens 200‑W 7722781 (B2HE‑199) | 199,000 BTU Wall‑Mounted Gas Condensing Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nWant high output without giving up floor space? The \u003cstrong\u003eVitodens 200‑W B2HE‑199\u003c\/strong\u003e is a \u003cstrong\u003ewall‑mounted, high‑efficiency gas condensing boiler\u003c\/strong\u003e designed for larger homes and light‑commercial projects. It modulates smoothly from \u003cstrong\u003e14–199 MBH\u003c\/strong\u003e to match real‑world demand, and its \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e helps keep efficiency high season after season. A built‑in \u003cstrong\u003e7\" touchscreen\u003c\/strong\u003e with WiFi makes control and monitoring simple.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722781 (Vitodens 200‑W, B2HE‑199)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Category IV Condensing Gas Boiler (Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (field conversion kit available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 14–199 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Output (Max):\u003c\/strong\u003e ~187 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e up to 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModulation:\u003c\/strong\u003e Wide turndown for steady temperatures and lower cycling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e Inox‑Radial Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCombustion Control:\u003c\/strong\u003e MatriX‑Plus Burner with Lambda Pro (self‑calibrating)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Direct‑Vent (sealed) or Room‑Air (per code)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Options:\u003c\/strong\u003e 80\/125 mm concentric or 3\" PPS two‑pipe\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 1\" NPT supply\/return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~17‑3\/4\" × 21‑3\/4\" × 39\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~179 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e 7\" color touchscreen with built‑in WiFi (ViCare app), outdoor reset, and multi‑circuit control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Compatibility:\u003c\/strong\u003e Pairs with indirect tanks for domestic hot water\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nThe fully modulating \u003cstrong\u003eMatriX‑Plus burner\u003c\/strong\u003e with \u003cstrong\u003eLambda Pro\u003c\/strong\u003e combustion control continuously optimizes the air‑to‑fuel mix—even as gas quality changes—helping the system run efficiently and cleanly at up to \u003cstrong\u003e95% AFUE\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003ch4\u003eRight‑Sized Modulation For Real‑World Loads\u003c\/h4\u003e\n\u003cp\u003e\nWith a \u003cstrong\u003e14–199 MBH\u003c\/strong\u003e input range, the B2HE‑199 can cruise on \u003cstrong\u003emilder spring\/fall days\u003c\/strong\u003e and ramp up for peak demand. That reduces short‑cycling, improves comfort, and helps components last.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Wall‑Hung Design\u003c\/h4\u003e\n\u003cp\u003e\nAt roughly \u003cstrong\u003e17‑3\/4\" wide\u003c\/strong\u003e with a shallow depth, Vitodens 200‑W saves valuable floor space and fits tight mechanical rooms. Front access to components keeps annual service straightforward.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Venting For Retrofits\u003c\/h4\u003e\n\u003cp\u003e\nChoose \u003cstrong\u003e80\/125 mm concentric\u003c\/strong\u003e or \u003cstrong\u003e3\" polypropylene (PPS) two‑pipe\u003c\/strong\u003e systems for long runs and tricky layouts. Use sealed direct‑vent or draw room air where code allows.\n\u003c\/p\u003e\n\n\u003ch4\u003eSmart 7\" Touchscreen With WiFi\u003c\/h4\u003e\n\u003cp\u003e\nThe integrated \u003cstrong\u003e7\" color touchscreen\u003c\/strong\u003e with built‑in WiFi connects to the \u003cstrong\u003eViCare\u003c\/strong\u003e app for remote control, schedules, and alerts. Outdoor reset and multi‑circuit capabilities help tailor comfort room by room.\n\u003c\/p\u003e\n\n\u003ch4\u003eReady For Indirect Domestic Hot Water\u003c\/h4\u003e\n\u003cp\u003e\nPair the B2HE‑199 with a Viessmann or compatible indirect tank for abundant hot water while keeping the boiler focused on space heating.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128280627,"sku":"VIESB2HE199","price":8584.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent.png?v=1771885488"},{"product_id":"viessmann-vitocell-300-v-119-gallon-indirect-fired-domestic-water-heater-zk06893","title":"Viessmann Vitocell 300-V 119 Gallon Indirect Fired Domestic Water Heater - ZK06893","description":"\u003ch2\u003eKeep Hot Water Ready With Viessmann Vitocell 300-V ZK06893 119-Gallon Indirect Water Heater\u003c\/h2\u003e \u003cp\u003e Need hotel-level hot water for big families or multi-bath homes—without the high energy bills? The \u003cstrong\u003eVitocell 300-V EVIB-119\u003c\/strong\u003e pairs a stainless-steel storage tank with a large, bottom-to-top stainless heat-exchange coil for fast, even reheats. Its removable soft-PET insulation keeps standby loss low and makes tight-room installs easier. AHRI-certified performance (up to a 413 GPH First Hour Rating) means consistent showers, laundry, and dishwashing—back-to-back. And because the tank and coil are high-alloy stainless, no sacrificial anode is required, reducing maintenance over time.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e ZK06893\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vertical Single-Coil Indirect-Fired Domestic Hot Water Tank (Stainless Steel)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 119 US gal (450 L) nominal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e High-alloy stainless tank and 1⅜″ (35 mm) OD stainless coil; removable soft-PET insulation (Vitosilver jacket)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e AHRI First Hour Rating 413 GPH; Continuous Draw 301 GPH; Standby Heat Loss 0.4 °F\/hr (IWH-TS-1)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e Heating supply\/return 1″ male NPT; DHW cold\/hot 1¼″ male NPT; recirculation 1″ male NPT; T\u0026amp;P 1″ male NPT\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 32¾″ overall diameter (with insulation) × 77″ overall height; 78″ tilt height (insulation off); 35½″ overall length\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Temperature \u0026amp; pressure relief valve; installation fittings; adjustable feet; literature set; sensor clamp (3 channels); removable insulation\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e AHRI Certified (IWH-TS-1); NSF\/ANSI 372 low-lead compliance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime tank warranty in residential applications (see Viessmann warranty)\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Energy With Ultra-Low Standby Loss\u003c\/h4\u003e \u003cp\u003eThick, removable soft-PET insulation minimizes heat loss—validated at just 0.4 °F per hour—so stored water stays hot longer and fuel spend stays lower. Because the 119-gallon model’s jacket comes off in seconds, you can keep that insulation intact while maneuvering through tight doorways, then re-install it for maximum efficiency once in place. That design also helps serviceability down the road. Tested performance is listed to AHRI’s IWH-TS-1 standard, so the numbers you see reflect real-world conditions, not lab wish-casting.\u003c\/p\u003e \u003ch4\u003eHigh-Volume Comfort, Back-to-Back\u003c\/h4\u003e \u003cp\u003eWhen everyone needs a shower, the EVIB-119 delivers: an AHRI First Hour Rating up to 413 GPH and a continuous draw of 301 GPH keep fixtures supplied without temperature “rollercoasters.” A large 18.3 ft² stainless coil that reaches the tank bottom heats evenly, so the usable hot water is a generous share of the tank volume. Paired with a properly sized modulating boiler, you’ll feel steady, predictable hot water during peak times. Less waiting—more doing.\u003c\/p\u003e \u003ch4\u003eHygienic Stainless Steel—No Anode Rods\u003c\/h4\u003e \u003cp\u003eThe tank shell and heat-exchange coil are both high-alloy stainless steel for corrosion resistance and clean water contact. That construction eliminates sacrificial anode rods, avoiding replacement costs and helping maintain water quality over time. Stainless surfaces also resist scaling and flaking better than enamel options, supporting long-term efficiency. It’s durability you can set and forget.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Handling \u0026amp; Fast Setup\u003c\/h4\u003e \u003cp\u003eOn arrival, the 119-gallon model ships with its soft-PET insulation in a separate carton, making the tank narrower and lighter to maneuver into mechanical rooms. Standard NPT tappings—1¼″ for domestic hot\/cold, 1″ for coil, recirculation, and T\u0026amp;P—keep piping straightforward with common fittings. Adjustable feet help you level quickly on uneven floors. A supplied sensor-clamp with three channels makes attaching control sensors simple and secure.\u003c\/p\u003e \u003ch4\u003eFast Recovery You Can Count On\u003c\/h4\u003e \u003cp\u003eWith design coil flows up to 22 GPM and recovery tables listed at 194\/176\/158 °F boiler supply temperatures, the EVIB-119 reheats quickly to cover big, multi-fixture draws. Typical heat-up time from 50 °F to 140 °F is about 25 minutes at 194 °F supply, so you’re back at full capacity fast after heavy use. Those published curves make pump and boiler sizing more predictable for your installer. The result: less guesswork, more hot water.\u003c\/p\u003e \u003ch4\u003eReady For Recirculation \u0026amp; Multi-Tank “Battery” Jobs\u003c\/h4\u003e \u003cp\u003eA dedicated 1″ recirculation tapping supports constant-circulation domestic systems to reduce wait time at far fixtures. Need hotel-style volumes? The Vitocell 300-V platform supports multi-tank batteries—common headers let you bank two or three tanks for peak-demand sites. Viessmann publishes the piping sizes, draw rates, and standby values for these arrays so pros can design confidently. Scale up when life (or business) demands it.\u003c\/p\u003e \u003ch4\u003eBuilt To Play Nice With Modulating Boilers\u003c\/h4\u003e \u003cp\u003eThe Vitocell 300-V is designed for low-temperature, modulating hydronic boilers and includes AHRI-certified ratings at 180 °F supply and 14 GPM coil flow. That alignment improves seasonal efficiency and comfort while protecting the tank coil. Working pressures are robust—up to 150 psig on the DHW side and 220 psig on the heat-exchanger side—so it integrates smoothly across high-output residential and light-commercial systems. Smart pairing, simpler commissioning.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128477235,"sku":"VIESZK06893","price":4781.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitocell-300-V_1280x1280_transparent.png?v=1779218224"},{"product_id":"viessmann-3-4-3-way-mixing-valve-7134742","title":"Viessmann 3\/4\" 3-Way Mixing Valve - 7134742","description":"The 3-way mixing valve mixes cooler heating system\/circuit return water temperature into the hot water boiler supply to the heating loop circuit, the amount depending on the mixing blade position. The mixing valve has optimum water temperature control characteristics in any mixing blade position. Threaded NPT connections (female). The 3-way mixing valve can only be installed in the vertical position (to avoid airpockets and dirt build-up). If, however, there is any welding or soldering to be done around the mixing valve, the complete rotary insert must be removed to prevent damage to the O-ring seals. Remove the four hexagon bolts only, and the total assembly will slide out of the housing.","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932139028531,"sku":"VIES7134742","price":480.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/31Dffq4NqXL.jpg?v=1771885863"},{"product_id":"viessmann-low-loss-header-temperature-sensors-for-wb2a-single-boiler-applications-7134240","title":"Viessmann Low Loss Header Temperature Sensors for WB2A Single Boiler Applications - 7134240","description":"Temperature sensor for use in combination with Veissmann Low Loss Headers on Vitodens 200 Model boilers.\u003cbr\u003e\u003cbr\u003eWhen used in conjunction with the Vitodens 200, boilers, the low-loss header acts as a hydraulic break, decoupling boiler and system circuits from each other.\u003cbr\u003e\u003cbr\u003eIt is recommended to use the low-loss header in applications in which the total system flow rate exceeds the maximum boiler flow rate. \u003cbr\u003e\u003cbr\u003eViessmann strongly recommends the use of a low-loss header in cases where the system head and flow rates are unknown.\u003cbr\u003e\u003cbr\u003eThe temperature sensor connection located at the top of the low-loss header ensures low return temperatures to the Vitodens 200, boilers, at all times, increasing operational efficiency.\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\u003cli\u003eNo temperature sensor is used on the Vitodens 100 boiler. Temperature sensor for the Vitodens 200\u003c\/li\u003e\u003c\/ul\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932155805747,"sku":"VIES7134240","price":289.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/31zljJJYayL.jpg?v=1771886139"},{"product_id":"viessmann-low-loss-header-temperature-sensors-for-wb2b-single-boiler-applications-7179488","title":"Viessmann Low Loss Header Temperature Sensors for WB2B Single Boiler Applications - 7179488","description":"Temperature sensor for use in combination with Veissmann Low Loss Headers on Vitodens 200 Model boilers.\u003cbr\u003e\u003cbr\u003eWhen used in conjunction with the Vitodens 200, boilers, the low-loss header acts as a hydraulic break, decoupling boiler and system circuits from each other.\u003cbr\u003e\u003cbr\u003eIt is recommended to use the low-loss header in applications in which the total system flow rate exceeds the maximum boiler flow rate. \u003cbr\u003e\u003cbr\u003eViessmann strongly recommends the use of a low-loss header in cases where the system head and flow rates are unknown.\u003cbr\u003e\u003cbr\u003eThe temperature sensor connection located at the top of the low-loss header ensures low return temperatures to the Vitodens 200, boilers, at all times, increasing operational efficiency.\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\u003cli\u003eNo temperature sensor is used on the Vitodens 100 boiler. Temperature sensor for the Vitodens 200\u003c\/li\u003e\u003c\/ul\u003e","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932156297267,"sku":"VIES7179488","price":216.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/31aJNAjjDJL.jpg?v=1771886139"},{"product_id":"viessmann-low-loss-header-1-1-4-type-80-60-19-5gpm-7498529","title":"Viessmann Low Loss Header 1-1\/4\" Type 80\/60 19.5GPM - 7498529","description":"When used in conjunction with the Vitodens 100, or Vitodens 200, boilers, the low-loss header acts as a hydraulic break, decoupling boiler and system circuits from each other.\u003cbr\u003e\u003cbr\u003eIt is recommended to use the low-loss header in applications in which the total system flow rate exceeds the maximum boiler flow rate. \u003cbr\u003e\u003cbr\u003eViessmann strongly recommends the use of a low-loss header in cases where the system head and flow rates are unknown.\u003cbr\u003e\u003cbr\u003eThe temperature sensor connection located at the top of the low-loss header ensures low return temperatures to the Vitodens 200, boilers, at all times, increasing operational efficiency.\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eThe low-loss header helps eliminate air and debris from the heating system\u003c\/li\u003e\n\u003cli\u003eIncludes sensor well, drain plug, air bleed plug, and insulation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932156362803,"sku":"VIES7498529","price":525.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1_21ef7002-5a6a-4ad5-ab49-6ccac9a1ebef.jpg?v=1771886140"},{"product_id":"viessmann-low-loss-header-2-type-120-80-35-2gpm-7498530","title":"Viessmann Low Loss Header 2\" Type 120\/80 35.2GPM - 7498530","description":"When used in conjunction with the Vitodens 100, or Vitodens 200, boilers, the low-loss header acts as a hydraulic break, decoupling boiler and system circuits from each other.\u003cbr\u003e\u003cbr\u003eIt is recommended to use the low-loss header in applications in which the total system flow rate exceeds the maximum boiler flow rate. \u003cbr\u003e\u003cbr\u003eViessmann strongly recommends the use of a low-loss header in cases where the system head and flow rates are unknown.\u003cbr\u003e\u003cbr\u003eThe temperature sensor connection located at the top of the low-loss header ensures low return temperatures to the Vitodens 200, boilers, at all times, increasing operational efficiency.\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eThe low-loss header helps eliminate air and debris from the heating system\u003c\/li\u003e\n\u003cli\u003eIncludes sensor well, drain plug, air bleed plug, and insulation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932156821555,"sku":"VIES7498530","price":685.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/VeissmannLowLossHeader1.jpg?v=1771886146"},{"product_id":"viessmann-7722777-vitodens-100-w-b1ke-199-199-000-btu-high-efficiency-combination-boiler","title":"Viessmann 7722777 Vitodens 100-W B1KE-199 199,000 BTU High Efficiency Combination Boiler","description":"\u003ch2\u003eViessmann 7722777 Vitodens 100‑W B1KE‑199 199,000 BTU High‑Efficiency Combination Boiler\u003c\/h2\u003e\n\u003cp\u003e\nLooking for one appliance that heats your whole home \u003cem\u003eand\u003c\/em\u003e gives you steady hot water? Meet the \n\u003cstrong\u003eViessmann Vitodens 100‑W B1KE‑199\u003c\/strong\u003e. This wall‑hung, \u003cstrong\u003ehigh‑efficiency condensing combi boiler\u003c\/strong\u003e is designed to be simple to own and easy to live with. \nIt sips fuel at \u003cstrong\u003e95% AFUE\u003c\/strong\u003e (think: more of your gas money turns into heat), smoothly ramps output with a \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, and uses a long‑lasting \n\u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e. Built‑in WiFi lets you use the \u003cstrong\u003eViCare\u003c\/strong\u003e app to adjust settings and get helpful alerts right from your phone.\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722777 (Vitodens 100‑W B1KE‑199, Combi)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing \u003cem\u003eCombi\u003c\/em\u003e Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (field convertible; push‑button software change)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpace‑Heating Input:\u003c\/strong\u003e 19.9–199 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 187 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI Rating:\u003c\/strong\u003e 163 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Continuous Draw:\u003c\/strong\u003e Up to 4.7 GPM @ 77°F rise\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Max Supply Temperature:\u003c\/strong\u003e 140°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Minimum Activation Flow:\u003c\/strong\u003e 0.5 GPM (plate heat exchanger)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Size \/ Options:\u003c\/strong\u003e 3\" flue; concentric 80\/125 mm (≈5\" × 3\") or 100\/150 mm; two‑pipe 3\" or 4\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Equivalent Vent Lengths:\u003c\/strong\u003e Coax 80\/125: 33 ft; Coax 100\/150: 43 ft; Two‑pipe 3\": 98 ft; Two‑pipe 4\": 148 ft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNOx Emissions:\u003c\/strong\u003e \u0026lt; 20 ppm (at 3% O\u003csub\u003e2\u003c\/sub\u003e)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAltitude:\u003c\/strong\u003e Up to 10,000 ft without input de‑rate (software setting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e \u0026lt; 59 dBA at 1 m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 1\" NPT (supply\/return)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Connections:\u003c\/strong\u003e 1\" NPT (hot supply \/ cold inlet)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT (female)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e 17.75\" × 22\" × 34.5\" (450 × 556 × 875 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Built‑in boiler\/DHW pump, 30 psi boiler PRV, 150 psi DHW PRV, outdoor sensor, mounting kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime (residential applications)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHigh Efficiency, Low Operating Costs\u003c\/h4\u003e\n\u003cp\u003eAFUE is like miles‑per‑gallon for boilers. At \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, most of the fuel you buy becomes useful heat instead of waste. The wide \u003cstrong\u003e10:1 turndown\u003c\/strong\u003e means the B1KE‑199 can run gently on mild days and ramp up when it’s freezing—saving gas while keeping rooms comfortable.\u003c\/p\u003e\n\u003ch4\u003eOn‑Demand Domestic Hot Water\u003c\/h4\u003e\n\u003cp\u003eNo storage tank to run out or reheat. When a faucet opens, the combi’s plate heat exchanger provides up to \u003cstrong\u003e4.7 GPM at a 77°F rise\u003c\/strong\u003e—plenty for busy families. A low \u003cstrong\u003e0.5 GPM\u003c\/strong\u003e activation flow helps smaller draws feel more responsive.\u003c\/p\u003e\n\u003ch4\u003eDurable Stainless Steel Core\u003c\/h4\u003e\n\u003cp\u003eCondensing boilers make a lot of moisture in the heat exchanger—so materials matter. Viessmann’s \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e, paired with the \u003cstrong\u003eMatriX‑Plus\u003c\/strong\u003e burner, is built to resist corrosion and stay efficient year after year. It’s backed by a \u003cstrong\u003elimited lifetime residential warranty\u003c\/strong\u003e for peace of mind.\u003c\/p\u003e\n\u003ch4\u003eQuiet, Compact, Easy To Install\u003c\/h4\u003e\n\u003cp\u003eAt about \u003cstrong\u003e17.75\" wide\u003c\/strong\u003e, this wall‑hung boiler tucks neatly into utility rooms and closets. It allows \u003cstrong\u003ezero clearance to combustibles\u003c\/strong\u003e and offers \u003cstrong\u003efront‑access service\u003c\/strong\u003e so technicians can work quickly. Sound levels under \u003cstrong\u003e59 dBA\u003c\/strong\u003e help keep things calm at home.\u003c\/p\u003e\n\u003ch4\u003eFlexible Fuel \u0026amp; Venting\u003c\/h4\u003e\n\u003cp\u003eSticking with natural gas or switching to propane later? Either works. For venting, choose \u003cstrong\u003econcentric (coaxial)\u003c\/strong\u003e or \u003cstrong\u003etwo‑pipe\u003c\/strong\u003e layouts. With equivalent lengths up to \u003cstrong\u003e148 ft\u003c\/strong\u003e (4\" two‑pipe), longer runs are supported. The unit is rated for \u003cstrong\u003ealtitudes up to 10,000 ft\u003c\/strong\u003e without reducing input and meets \u003cstrong\u003e\u0026lt;20 ppm NOx\u003c\/strong\u003e requirements.\u003c\/p\u003e\n\u003ch4\u003eSmartphone Control Built In\u003c\/h4\u003e\n\u003cp\u003eConnect to WiFi and use the \u003cstrong\u003eViCare\u003c\/strong\u003e app to adjust temperatures, set hot‑water schedules, and receive helpful notifications. It’s an easy way to stay in control from anywhere.\u003c\/p\u003e\n\n\u003cp\u003eUpgrade your home's heating and hot water system, enjoy uninterrupted comfort, and experience the energy-efficient benefits of the Viessmann Vitodens 100 B1KE-199. Shop with Plumbing Deals to ensure your home is warm and inviting all year round!\u003c\/p\u003e\n\u003cp\u003e Want to learn more about this boiler? Read more about it in our article on \u003ca href=\"https:\/\/plumbing-deals.com\/plumbing-blog\/buying-guides-top-steam-boilers-of-2025\/\"\u003ethe best steam boilers.\u003c\/a\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eWant to learn more about this high efficiency boiler? Check out our article on all things \u003ca href=\"https:\/\/plumbing-deals.com\/plumbing-blog\/pumps-water-heaters-and-boilers-high-efficiency-boilers\/\"\u003ehigh efficiency boilers\u003c\/a\u003e.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932156723251,"sku":"VIESB1KE199","price":4618.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_c2736b31-c243-4287-a377-daf0cd616ac9.png?v=1771541789"},{"product_id":"viessmann-vitocell-300-v-42-gallon-indirect-fired-domestic-water-heater-7720348","title":"Viessmann Vitocell 300-V 42 Gallon Indirect Fired Domestic Water Heater - 7720348","description":"\u003ch2\u003eViessmann Vitocell 300-V EVIB-42 | 42-Gallon Stainless Steel Indirect Water Heater — More Hot Water, Faster Recovery (7720348) \u003c\/h2\u003e\n\u003cp\u003e\nWant abundant hot water and low upkeep from a compact tank? The \u003cstrong\u003eVitocell 300‑V EVIB‑42\u003c\/strong\u003e pairs a \n\u003cstrong\u003estainless steel storage tank\u003c\/strong\u003e with a high‑surface‑area \u003cstrong\u003einternal coil\u003c\/strong\u003e to heat water quickly using your boiler. Foam insulation keeps heat where it belongs, while corrosion‑resistant construction means \u003cstrong\u003eno sacrificial anode to replace\u003c\/strong\u003e and dependable performance for years.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7720348 (Vitocell 300‑V EVIB‑42)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vertical, Stainless Steel \u003cstrong\u003eIndirect‑Fired\u003c\/strong\u003e DHW Storage Tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 42 US Gallons (160 L)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirst Hour Rating:\u003c\/strong\u003e 223 GPH (844 LPH)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Draw Rating:\u003c\/strong\u003e 189 GPH (715 LPH)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirst Draw:\u003c\/strong\u003e 34 Gallons (128 L)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAHRI Rating Conditions:\u003c\/strong\u003e 119 MBH input, 180°F boiler supply, 14 GPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat Exchanger Surface Area:\u003c\/strong\u003e 11 ft² (1.0 m²)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Coil Water Content:\u003c\/strong\u003e 1.95 USG (7.4 L)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandby Heat Loss:\u003c\/strong\u003e 0.8 °F\/hr (0.4 °C\/hr)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation:\u003c\/strong\u003e Foamed‑in‑place PUR with Vitopearlwhite steel jacket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnections (Heating):\u003c\/strong\u003e 1\" male NPT supply\/return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnections (DHW):\u003c\/strong\u003e 3\/4\" male NPT cold\/hot; 3\/4\" recirculation; 3\/4\" T\u0026amp;P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (Dia × L × H):\u003c\/strong\u003e 25\" × 26\" × 47\" (tilt height 50\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight (Dry):\u003c\/strong\u003e 126 lb (57 kg)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Vitopearlwhite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Lifetime (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFast, Even Hot Water\u003c\/h4\u003e\n\u003cp\u003e\nA large, stainless steel coil transfers heat efficiently from the boiler to the tank, supporting \u003cstrong\u003ehigh recovery and steady temperatures\u003c\/strong\u003e—great for back‑to‑back showers and busy households.\n\u003c\/p\u003e\n\n\u003ch4\u003eDurable Stainless Steel Construction\u003c\/h4\u003e\n\u003cp\u003e\nThe tank and heat‑exchange coil are made from \u003cstrong\u003ehigh‑alloy stainless steel\u003c\/strong\u003e for excellent corrosion resistance. That means \u003cstrong\u003eno sacrificial anode\u003c\/strong\u003e to maintain and a long service life.\n\u003c\/p\u003e\n\n\u003ch4\u003eEfficient, Well‑Insulated Design\u003c\/h4\u003e\n\u003cp\u003e\nThick PUR foam insulation and a tight jacket help \u003cstrong\u003eminimize standby losses\u003c\/strong\u003e, keeping more heat in the water and less in the mechanical room.\n\u003c\/p\u003e\n\n\u003ch4\u003eSmart Coil Layout\u003c\/h4\u003e\n\u003cp\u003e\nThe internal coil is \u003cstrong\u003eself‑venting at the top and self‑draining at the bottom\u003c\/strong\u003e to limit air locks and scale buildup. The coil reaches deep into the tank to heat a large portion of the stored volume for a generous draw.\n\u003c\/p\u003e\n\n\u003ch4\u003eInstaller‑Friendly Connections\u003c\/h4\u003e\n\u003cp\u003e\nClearly labeled, \u003cstrong\u003e1\" heating\u003c\/strong\u003e and \u003cstrong\u003e3\/4\" DHW\u003c\/strong\u003e tappings plus a dedicated \u003cstrong\u003erecirculation\u003c\/strong\u003e port simplify piping. Adjustable feet and compact \u003cstrong\u003e25\" diameter\u003c\/strong\u003e make placement and leveling easy in tight rooms.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932323479603,"sku":"VIESEVIB42","price":2166.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitocell_life_2520x1080_8a66f188-b58b-4b90-a157-385fdf126637.jpg?v=1771541556"},{"product_id":"viessmann-cu3a-94-vitocrossal-300-cu3a-94-000-btu-gas-condensing-boiler","title":"Viessmann CU3A-94 Vitocrossal 300 CU3A 94,000 BTU Gas Condensing Boiler","description":"\u003ch2\u003eUpgrade to the Viessmann CU3A-94 Vitocrossal 300 Gas Condensing Boiler\u003c\/h2\u003e\n\u003cp\u003eThe Viessmann CU3A-94 Vitocrossal 300 is a high-efficiency, floor-standing gas condensing boiler designed for residential and light commercial heating systems that demand consistent performance, low operating costs, and long-term reliability.\u003c\/p\u003e\n\u003cp\u003eBuilt around Viessmann’s proven Inox-Crossal stainless steel heat exchanger and MatriX dome gas burner technology, this boiler delivers exceptional fuel efficiency, quiet operation, and stable heating output for both retrofit and new construction applications.\u003c\/p\u003e\n\u003cp\u003eWith a maximum input of 94,000 BTU and 95% AFUE efficiency, the CU3A-94 is ideal for high-temperature systems such as cast iron radiators, baseboard heating loops, and multi-zone hydronic systems.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003ch4\u003eExceptional Efficiency with Intelligent Technology\u003c\/h4\u003e\n\u003cp\u003eAchieve up to 98% efficiency with the vertical stainless steel Inox-Crossal heat exchanger, designed for optimal heat transfer. Its smooth surface promotes a self-cleaning effect, pushing efficiency even further while reducing maintenance needs. Paired with the MatriX dome gas burner, the boiler ensures ultra-low emissions and high-performance combustion, even with fluctuating gas quality.\u003c\/p\u003e\n\u003ch4\u003eFlexible and Reliable for All Homes\u003c\/h4\u003e\n\u003cp\u003eWhether your home relies on high-mass cast iron radiators or modern high-temperature fin tube radiators, the Viessmann CU3A seamlessly integrates with all setups. Its high-output capacity and compact floor-standing design make it a versatile choice for virtually any heating demand, including multi-zone systems and significant hot water requirements.\u003c\/p\u003e\n\u003ch4\u003eQuiet Comfort and Durability\u003c\/h4\u003e\n\u003cp\u003eOperating quieter than most household refrigerators, the CU3A ensures absolute comfort without distracting noise. Its durable stainless steel construction and limited lifetime warranty on residential applications provide peace of mind, knowing your investment will stand the test of time.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-efficiency residential\/light commercial gas condensing boiler\u003c\/li\u003e\n\u003cli\u003eMaximum input: 94,000 BTU\u003c\/li\u003e\n\u003cli\u003eAFUE efficiency: up to 95%\u003c\/li\u003e\n\u003cli\u003eFloor-standing installation design\u003c\/li\u003e\n\u003cli\u003eStainless steel Inox-Crossal heat exchanger\u003c\/li\u003e\n\u003cli\u003eMatriX dome modulating burner system\u003c\/li\u003e\n\u003cli\u003e5:1 turndown ratio for efficient part-load operation\u003c\/li\u003e\n\u003cli\u003eSuitable for hydronic heating systems (radiators, baseboard, multi-zone systems)\u003c\/li\u003e\n\u003cli\u003eCompact footprint for retrofit mechanical rooms\u003c\/li\u003e\n\u003cli\u003eDesigned for consistent heating performance with reduced cycling\u003c\/li\u003e\n\u003cli\u003eHigh-altitude operation capability (up to approx. 10,000 ft)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/plumbing-deals.com\/collections\/viessmann\" title=\"Shop all Viessmann products on Plumbing Deals\"\u003eViessmann\u003c\/a\u003e is a global leader in high-efficiency heating systems, known for durable engineering, advanced condensing technology, and long-lasting hydronic boiler solutions designed for residential and commercial applications.\u003c\/p\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel: \u003c\/strong\u003eCU3A-94\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eViessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries: \u003c\/strong\u003eVitocrossal 300 CU3A\u003c\/li\u003e\n\u003cli\u003e\n\u003c!--[endif]--\u003e\u003cstrong\u003eWarranty: \u003c\/strong\u003eLimited lifetime warranty in residential applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eViessmann CU3A-94 FAQ\u003c\/h3\u003e\n\u003ch4\u003eWhat is the Viessmann CU3A-94 used for?\u003c\/h4\u003e\n\u003cp\u003eThe CU3A-94 is a high-efficiency condensing boiler used for residential and light commercial hydronic heating systems, including radiators, baseboards, and multi-zone heating setups.\u003c\/p\u003e\n\u003ch4\u003eIs the CU3A-94 good for replacing older cast iron boilers?\u003c\/h4\u003e\n\u003cp\u003eYes. The CU3A-94 is specifically designed for retrofit applications and performs well in high-temperature systems like cast iron radiators.\u003c\/p\u003e\n\u003ch4\u003eHow efficient is the Viessmann CU3A-94 boiler?\u003c\/h4\u003e\n\u003cp\u003eIt operates at up to 95% AFUE efficiency, depending on system configuration and operating conditions.\u003c\/p\u003e\n\u003ch4\u003eDoes the CU3A-94 require special piping?\u003c\/h4\u003e\n\u003cp\u003eIn many applications, its high water content design reduces or eliminates the need for complex primary\/secondary piping.\u003c\/p\u003e\n\u003ch4\u003eWhat makes this boiler a condensing model?\u003c\/h4\u003e\n\u003cp\u003eIt captures additional heat from flue gases using a stainless steel heat exchanger, increasing efficiency compared to non-condensing boilers.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932323545139,"sku":"VIESCU3A94","price":6556.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitocrossal-300-CU3A_Front_1280x1280_transparent_627d114e-eed2-43ce-a9a0-36e03fc5e3b2.png?v=1769700675"},{"product_id":"viessmann-vitocell-300-v-53-gallon-indirect-fired-domestic-water-heater-7720343","title":"Viessmann Vitocell 300-V 53 Gallon Indirect Fired Domestic Water Heater - 7720343","description":"\u003ch2\u003eStreamline Your Hot Water With Viessmann Vitocell 300-V 7720343 (EVIB-53) 53-Gallon Indirect Water Heater\u003c\/h2\u003e \u003cp\u003e Outfit your home for abundant, hygienic hot water with lower standby losses. The \u003cstrong\u003eVitocell 300-V EVIB-53\u003c\/strong\u003e is a vertical, single-coil \u003cstrong\u003eindirect-fired DHW tank\u003c\/strong\u003e built from high-grade stainless steel with a large-diameter coil for fast, even recovery—ideal alongside a modulating condensing boiler. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7720343\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vertical Single-Coil Indirect-Fired Domestic Hot Water Tank (Stainless Steel)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 53 US gal (200 L) nominal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e First Hour Rating 238 GPH; Continuous Draw 190 GPH; Standby Heat Loss 0.7 °F\/hr (AHRI IWH-TS-1)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e High-alloy stainless tank with 1⅜″ (35 mm) OD stainless heat-exchanger coil; PUR foam insulation; white casing\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e 1″ male NPT coil supply\/return; ¾″ male NPT domestic cold\/hot; ¾″ male NPT recirculation; ¾″ male NPT T\u0026amp;P\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 55½″ H × 25″ Dia; tilt height 57½″ (for moving\/clearance)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Temperature \u0026amp; pressure relief valve, installation fittings, adjustable feet, fitted insulation, literature set\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e AHRI Certified (IWH-TS-1); NSF\/ANSI 372 low-lead compliance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime tank warranty in residential applications (see Viessmann warranty)\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Energy With Low Standby Loss\u003c\/h4\u003e \u003cp\u003eEfficient PUR foam insulation minimizes heat loss to keep water hot and energy bills in check—validated by a standby loss of just 0.7 °F per hour.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA large 1⅜″ stainless coil that reaches the bottom of the tank helps deliver fast, even recovery for steady temperatures—up to a 238 GPH first-hour rating.\u003c\/p\u003e \u003ch4\u003eBuilt To Last—No Anode Required\u003c\/h4\u003e \u003cp\u003eHigh-grade stainless steel tank and coil resist corrosion and scale, maintain water quality, and eliminate sacrificial anode replacements over the tank’s life.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Layout\u003c\/h4\u003e \u003cp\u003eStandard NPT connections (1″ coil, ¾″ domestic and recirc) simplify piping. Compact 55½″ height and 25″ diameter fit tight mechanical rooms; tilt height eases moves.\u003c\/p\u003e \u003ch4\u003eSmart System Compatibility\u003c\/h4\u003e \u003cp\u003eDesigned to pair with modulating, low-temperature boilers and suitable for multi-tank “battery” setups when higher DHW volumes are required.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932323938355,"sku":"VIESEVIB53","price":3080.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitocell_life_2520x1080_fcdfc732-1f64-4277-9791-43c47b7c2418.jpg?v=1771541552"},{"product_id":"viessmann-vitocell-300-v-79-gallon-indirect-fired-domestic-water-heater-7720338","title":"Viessmann Vitocell 300-V 79 Gallon Indirect Fired Domestic Water Heater - 7720338","description":"\u003ch2\u003eUpgrade Your Hot Water With Viessmann Vitocell 300-V 7720338 (EVIB-79) 79-Gallon Indirect Water Heater\u003c\/h2\u003e \u003cp\u003e Need abundant, steady hot water with lower standby losses? The \u003cstrong\u003eVitocell 300-V EVIB-79\u003c\/strong\u003e is a vertical, single-coil \u003cstrong\u003eindirect-fired DHW tank\u003c\/strong\u003e built from high-grade stainless steel with a large-area coil for fast recovery and even temperatures—an ideal partner for modulating condensing boilers. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7720338\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vertical Single-Coil Indirect-Fired Domestic Hot Water Tank (Stainless Steel)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 79 US gal (300 L) nominal\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e First Hour Rating 345 GPH; Continuous Draw 269 GPH; Standby Heat Loss 0.7 °F\/hr (AHRI IWH-TS-1). AHRI rating input 169 MBH @ 180 °F supply, 14 GPM.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless tank with ≈1-3\/8″ (35 mm) OD stainless heat-exchanger coil; high-efficiency PUR foam insulation; white casing\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e 1″ male NPT coil supply\/return; 1″ male NPT domestic cold\/hot; 1″ male NPT recirculation; 1″ male NPT T\u0026amp;P\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 26-1\/4″ Dia × 68-1\/4″ H; tilt height 72″ (for moving\/clearance)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Temperature \u0026amp; pressure relief valve; installation fittings; adjustable feet; fitted insulation; literature set\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e AHRI Certified; NSF\/ANSI 372 low-lead\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime tank warranty in residential applications (see Viessmann warranty)\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Energy With Low Standby Loss\u003c\/h4\u003e \u003cp\u003eThick PUR foam insulation helps minimize heat loss—just 0.7 °F per hour—so stored water stays hot longer and fuel spend stays lower.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA large stainless coil that reaches the bottom of the tank delivers fast, even recovery—up to a 345 GPH first-hour rating—so showers and back-to-back draws stay consistent.\u003c\/p\u003e \u003ch4\u003eBuilt To Last—No Anode Required\u003c\/h4\u003e \u003cp\u003eThe high-alloy stainless tank and coil resist corrosion and scale buildup and don’t rely on sacrificial anodes, reducing maintenance over the tank’s service life.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Layout\u003c\/h4\u003e \u003cp\u003eStandard 1″ NPT connections and a compact 26-1\/4″ diameter simplify piping in tight mechanical rooms. Tilt height of 72″ makes getting it through doors and around corners easier.\u003c\/p\u003e \u003ch4\u003eSmart System Compatibility\u003c\/h4\u003e \u003cp\u003eWorks seamlessly with modulating boilers and supports multi-tank “battery” setups when higher domestic hot water volumes are needed.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932323971123,"sku":"VIESEVIB79","price":3789.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/vitocell_life_2520x1080_2c65b753-a583-43eb-a981-e848187c0916.jpg?v=1771541529"},{"product_id":"viessmann-7560569-boiler-stand-for-vitodens-100w-and-vitodens-200w-up-to-352-series-wall-boilers","title":"Viessmann 7560569 Boiler Stand for Vitodens 100W and Vitodens 200W (up to 352) Series Wall Boilers","description":"\u003ch2\u003eElevate Your Heating System: Viessmann 7560569 Boiler Stand for Vitodens Boilers\u003c\/h2\u003e\n\u003cp\u003eThe Viessmann 7560569 Boiler Stand provides a safe, secure, and efficient platform for your Vitodens 100W and Vitodens 200W (up to 352) series wall-mounted boilers (highlight brand recognition: Viessmann, a trusted name in high-efficiency heating systems). This genuine Viessmann accessory offers unmatched functionality and complements the innovative design of your boiler.\u003c\/p\u003e\n\u003cp\u003eWhile wall-mounted boilers offer space-saving benefits, proper installation is crucial for optimal performance and safety. The Viessmann 7560569 Boiler Stand elevates your boiler to an ideal working height, providing several advantages.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e Viessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMPN:\u003c\/b\u003e 7560569 \u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions:\u003c\/b\u003e 76.75\" H x 24\" W x 19.625\" D\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompatible With:\u003c\/b\u003e Vitodens 100-W, WB1B 26 and 35; Vitodens 100-W, WB1B 26 and 35 with CombiPLUS; Vitodens 100-W, B1HA 26, 35, 94, 125; Vitodens 100-W, B1KA 35, 125; Vitodens 100-W, B1HE 85, 120, 150, 199; Vitodens 100-W, B1KE 120, 199; Vitodens 200-W, B2HA 19-100, 285-352; Vitodens 200-W, B2HB 19 to 199; Vitodens 200-W, B2HE 85, 120, 150, 199\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe sleek design of the Viessmann stand enhances your boiler, delivering a clean and professional finish to your mechanical room. Specifically crafted for the Vitodens 100W and Vitodens 200W (up to 352) series boilers, it ensures a perfect fit and optimal performance.\u003c\/p\u003e\n\u003cp\u003eWhen using the boiler stand, ensure it is securely fastened to the floor. The stand provides a stable base, minimizing vibration and potential damage to the boiler or surrounding components. For optimal stability, it is recommended to use durable concrete expansion anchors like the Hilti model KB-TZ 3\/8 x 4 or an equivalent. This ensures a dependable and reliable setup that enhances the longevity and safety of your boiler system.\u003c\/p\u003e\n\u003cp\u003eA raised boiler simplifies maintenance and service for qualified technicians, providing optimal airflow for efficient operation. The thoughtful design of the stand ensures proper airflow around the boiler, enhancing its performance and reliability. This smart feature underscores the importance of maintaining peak efficiency, making it an essential component for any high-performing system.\u003c\/p\u003e\n\u003cp\u003eThe boiler stand is engineered for the free-standing installation of a single boiler within a mechanical room, offering a reliable solution for your heating needs. Designed for seamless installation by qualified plumbers, it minimizes downtime and ensures consistent performance. The stand features a robust construction with two legs, an upper rack assembly, a CombiPLUS mounting bracket, and essential mounting hardware, making it a dependable choice for efficient and straightforward setup.\u003c\/p\u003e\n\u0026lt;.p\u0026gt;The Viessmann 7560569 Boiler Stand isn't just an accessory; it's an investment in the performance, longevity, and safety of your Vitodens boiler system. Homeowners can enhance their boiler's efficiency and reliability by choosing a genuine Viessmann stand during installation, ensuring a perfect fit and seamless operation. Plumbers will appreciate the high-quality solution the Viessmann stand offers, reflecting their commitment to outstanding service and long-term system health for their clients. \n\u003cp\u003eCrafted from premium materials, this stand offers lasting support for your valuable boiler. Its robust design and precise engineering make it essential for any professional's toolkit, ensuring top performance and durability. Choose wisely for optimal boiler functionality and client satisfaction.\u003c\/p\u003e\n\u003ch3\u003eAdditional Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for Vitodens 100W and Vitodens 200W\u003c\/li\u003e\n\u003cli\u003eRecommended concrete expansion anchors include the Hilti model KB-TZ 3\/8 x 4 or equivalent\u003c\/li\u003e\n\u003cli\u003eMade of premium material\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325118003,"sku":"VIES7560569","price":1046.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/viessmann_207560569_20boiler_20stand_201.png?v=1769701593"},{"product_id":"viessmann-7722773-vitodens-100-w-b1he-120-120-000-btu-high-efficiency-hyrdronic-boiler","title":"Viessmann 7722773 Vitodens 100-W B1HE-120 120,000 BTU High Efficiency Hyrdronic Boiler","description":"\u003ch2\u003eViessmann 7722773 Vitodens 100‑W B1HE‑120 | 120,000 BTU High‑Efficiency Wall‑Hung Condensing Hydronic Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nLooking for reliable heat without taking up floor space? The \u003cstrong\u003eVitodens 100‑W B1HE‑120\u003c\/strong\u003e is a \u003cstrong\u003eheating‑only, wall‑hung gas condensing boiler\u003c\/strong\u003e that’s efficient, quiet, and easy to live with. It runs at \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, modulates with a wide \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, and uses an \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e to help keep performance high season after season. Built‑in WiFi works with \u003cstrong\u003eViCare\u003c\/strong\u003e for simple control from your phone.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722773 (Vitodens 100‑W B1HE‑120, Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing Hydronic Boiler (Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (software conversion)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 12–120 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 113 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 98 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 60 psig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Coaxial):\u003c\/strong\u003e 80\/125 mm concentric (5\"×3\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Two‑Pipe):\u003c\/strong\u003e 3\" or 4\" polypropylene\/CPVC (equivalent lengths commonly up to ~98 ft for 3\" and ~148 ft for 4\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 3\/4\" NPT (supply\/return)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~17.7\" × 19.7\" × 33.8\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e 30 psi pressure relief valve, installation fittings, outdoor temperature sensor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Lower Fuel Bills\u003c\/h4\u003e\n\u003cp\u003e\nAt \u003cstrong\u003e95% AFUE\u003c\/strong\u003e with a \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, the B1HE‑120 matches output to demand to reduce cycling and help cut gas costs.\n\u003c\/p\u003e\n\n\u003ch4\u003eHeating‑Only, Ideal For Indirect Hot Water\u003c\/h4\u003e\n\u003cp\u003e\nKeep space heating and domestic hot water separate. Pair the B1HE‑120 with an \u003cstrong\u003eindirect tank\u003c\/strong\u003e for abundant hot water and simple controls.\n\u003c\/p\u003e\n\n\u003ch4\u003eStainless Steel Heat Exchanger\u003c\/h4\u003e\n\u003cp\u003e\nThe \u003cstrong\u003eInox‑Radial\u003c\/strong\u003e stainless‑steel heat exchanger is purpose‑built for condensing operation—resisting corrosion and supporting long service life.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Quiet, Easy To Service\u003c\/h4\u003e\n\u003cp\u003e\nA slim, \u003cstrong\u003e17.7\"‑wide\u003c\/strong\u003e cabinet and \u003cstrong\u003efront‑access\u003c\/strong\u003e components make tight installs and annual service straightforward.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Fuel \u0026amp; Venting Options\u003c\/h4\u003e\n\u003cp\u003e\nConvert between \u003cstrong\u003enatural gas and LP\u003c\/strong\u003e in software. Choose \u003cstrong\u003e80\/125 mm concentric\u003c\/strong\u003e or \u003cstrong\u003e3\"\/4\" two‑pipe\u003c\/strong\u003e venting to handle longer runs and tricky layouts.\n\u003c\/p\u003e\n\n\u003ch4\u003eSmartphone Control With ViCare\u003c\/h4\u003e\n\u003cp\u003e\nBuilt‑in WiFi connects to the \u003cstrong\u003eViCare\u003c\/strong\u003e app so you can view temperatures, set schedules, and receive alerts right from your phone.\n\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/us\/pdf\/technical-data-manuals\/vitodens_100-b1he_tdm.pdf\/_jcr_content\/renditions\/original.media_file.download_attachment.file\/vitodens_100-b1he_tdm.pdf\"\u003eTechnical Data Manual\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.afsupply.com\/pub\/media\/catalog\/product\/matridtech\/viessmann\/spec\/vitodens_100b1he_is.pdf\"\u003eInstallation and Service Manual\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/us\/flyers\/Vitodens_100_W_B1HE_B1KE_06_2021.pdf\/_jcr_content\/renditions\/original.media_file.download_attachment.file\/Vitodens_100_W_B1HE_B1KE_06_2021.pdf\"\u003eProduct Flyer\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.afsupply.com\/pub\/media\/catalog\/product\/matridtech\/viessmann\/spec\/user_manual_vitodens_100.pdf\"\u003eApplication Guide\u003c\/a\u003e\u003cbr\u003e","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932325150771,"sku":"VIESB1HE120","price":3188.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_3d9fe5bb-a466-4946-94e9-98c9099c93fb.png?v=1771541391"},{"product_id":"viessmann-7658026-boiler-stand-for-vitodens-200-w-series-wall-boilers","title":"Viessmann 7658026 Boiler Stand for Vitodens 200-W Series Wall Boilers","description":"The boiler stand is used for free-standing installation of a single boiler within the mechanical room.When using the boiler stand, ensure that the stand is securely fastened to the floor.Recommended concrete expansion anchors are Hilti model KB-TZ 3\/8 x 4 or equivalent.Overall dimensions are 78.5\" H x 24.5\" D x Variable WidthThe rack is field assembled and contains two legs, upper rack assembly, lower rack assembley, and mounting hardware.For use with: Vitodens 200-W B2HA\/B2HB 160-530Submittal","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325216307,"sku":"VIES7658026","price":1393.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/screenshot_202023-09-18_20122651.png?v=1769701636"},{"product_id":"viessmann-7722774-vitodens-100-w-b1he-150-150-000-btu-high-efficiency-hydronic-boiler","title":"Viessmann 7722774 Vitodens 100-W B1HE-150 150,000 BTU High Efficiency Hydronic Boiler","description":"\u003ch2\u003eViessmann 7722774 Vitodens 100‑W B1HE‑150 | 150,000 BTU High‑Efficiency Wall‑Hung Condensing Hydronic Boiler (95% AFUE)\u003c\/h2\u003e\n\u003cp\u003e\nThe \u003cstrong\u003eViessmann Vitodens 100‑W B1HE‑150\u003c\/strong\u003e is a \u003cstrong\u003ehigh‑efficiency, wall‑hung condensing boiler\u003c\/strong\u003e designed for reliable \u003cstrong\u003ehydronic space heating\u003c\/strong\u003e. With a \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, a wide \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, and Viessmann’s durable \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e, this \u003cstrong\u003e150,000 BTU\u003c\/strong\u003e model delivers steady comfort while helping lower fuel use. Built‑in WiFi brings the \u003cstrong\u003eViCare\u003c\/strong\u003e app to your phone for simple control and scheduling.\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722774 (Vitodens 100‑W B1HE‑150, Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing \u003cem\u003eHeating‑Only\u003c\/em\u003e Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (field convertible; software change, no mechanical adjustments)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput (NG):\u003c\/strong\u003e 15.5–150 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput (LP):\u003c\/strong\u003e 14–150 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 141 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 123 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 60 psig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNOx Emissions:\u003c\/strong\u003e \u0026lt; 20 ppm (at 3% O\u003csub\u003e2\u003c\/sub\u003e)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAltitude Rating:\u003c\/strong\u003e Up to 10,000 ft without input de‑rate (software setting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e ~51 dB (full load); ~31 dB (part load) @ 1 m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Coax):\u003c\/strong\u003e 80\/125 mm up to 33 ft equiv.; 100\/150 (or 110\/160) up to 43 ft equiv.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Two‑Pipe):\u003c\/strong\u003e 3\" up to 98 ft equiv.; 4\" up to 148 ft equiv.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearances:\u003c\/strong\u003e Zero clearance to combustibles; front service access\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 1\" NPT supply\/return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Tank Piping (for indirect):\u003c\/strong\u003e 1\" NPT supply\/return (use with indirect tank)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT (male)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e 17.75\" × 22\" × 34.5\" (450 × 556 × 875 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e 30 psi boiler PRV, installation fittings\/hardware, outdoor temperature sensor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime (residential applications)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHigh Efficiency, Lower Fuel Bills\u003c\/h4\u003e\n\u003cp\u003eAt \u003cstrong\u003e95% AFUE\u003c\/strong\u003e and with a generous \u003cstrong\u003e10:1 turndown\u003c\/strong\u003e, the B1HE‑150 modulates smoothly to match real‑world demand—cutting cycling, improving comfort, and reducing gas consumption compared to older non‑condensing boilers.\u003c\/p\u003e\n\u003ch4\u003eHeating‑Only, Ideal For Indirect DHW\u003c\/h4\u003e\n\u003cp\u003ePair the B1HE‑150 with a \u003cem\u003eseparate\u003c\/em\u003e indirect water heater for robust domestic hot water. The boiler provides dedicated 1\" supply\/return connections for a tank coil and includes an outdoor sensor for easy outdoor‑reset control.\u003c\/p\u003e\n\u003ch4\u003eStainless Steel Inox‑Radial Heat Exchanger\u003c\/h4\u003e\n\u003cp\u003eViessmann’s \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e and \u003cstrong\u003eMatriX‑Plus\u003c\/strong\u003e burner are engineered to resist corrosion in condensing operation, helping the unit maintain efficiency year after year.\u003c\/p\u003e\n\u003ch4\u003eCompact, Quiet, Easy To Service\u003c\/h4\u003e\n\u003cp\u003eA slim \u003cstrong\u003e17.75\"‑wide\u003c\/strong\u003e cabinet, \u003cstrong\u003efront‑access components\u003c\/strong\u003e, and \u003cstrong\u003ezero clearance to combustibles\u003c\/strong\u003e simplify installations in tight mechanical rooms, closets, or utility spaces. Sound levels around \u003cstrong\u003e51 dB\u003c\/strong\u003e at full fire help keep homes quiet.\u003c\/p\u003e\n\u003ch4\u003eFlexible Fuel \u0026amp; Venting Options\u003c\/h4\u003e\n\u003cp\u003eConvert between natural gas and propane via software settings. Choose \u003cstrong\u003ecoaxial (80\/125 or 100\/150)\u003c\/strong\u003e or \u003cstrong\u003etwo‑pipe (3\" or 4\")\u003c\/strong\u003e venting, with equivalent lengths up to \u003cstrong\u003e148 ft\u003c\/strong\u003e (4\" two‑pipe) to fit challenging layouts. Rated for \u003cstrong\u003ealtitudes to 10,000 ft\u003c\/strong\u003e without derating.\u003c\/p\u003e\n\u003ch4\u003eBuilt‑In WiFi \u0026amp; ViCare App\u003c\/h4\u003e\n\u003cp\u003eConnect the boiler to your network and use \u003cstrong\u003eViCare\u003c\/strong\u003e for remote temperature adjustments, schedules, and helpful notifications—from anywhere.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325380147,"sku":"VIESB1HE150","price":4188.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_f7920779-df22-4a16-b9b3-3ec41f3ebb45.png?v=1771541401"},{"product_id":"viessmann-7722772-vitodens-100-w-b1he-85-85-000-btu-high-efficiency-hyrdronic-boiler","title":"Viessmann 7722772 Vitodens 100-W B1HE-85 85,000 BTU High Efficiency Hyrdronic Boiler","description":"\u003ch2\u003eViessmann 7722772 Vitodens 100‑W B1HE‑85 | 85,000 BTU High‑Efficiency Wall‑Hung Condensing Hydronic Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nLooking for reliable heat without taking up floor space? The \u003cstrong\u003eVitodens 100‑W B1HE‑85\u003c\/strong\u003e is a \u003cstrong\u003eheating‑only, wall‑hung gas condensing boiler\u003c\/strong\u003e that’s efficient, quiet, and easy to live with. It runs at \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, modulates from \u003cstrong\u003e8.5–85 MBH\u003c\/strong\u003e to match demand, and uses an \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e to help keep performance high season after season. Built‑in WiFi works with \u003cstrong\u003eViCare\u003c\/strong\u003e for simple control from your phone.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722772 (Vitodens 100‑W B1HE‑85, Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing Hydronic Boiler (Heating‑Only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 8.5–85 MBH (NG); 14–85 MBH (LP)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 80 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 70 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 45 psig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Coaxial):\u003c\/strong\u003e 80\/125 mm or 100\/150 mm concentric (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting (Two‑Pipe):\u003c\/strong\u003e 2\" up to 98 ft*, 3\" up to 164 ft, 4\" up to 198 ft equivalent length (*automatic 2% input reduction)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAltitude:\u003c\/strong\u003e Up to 10,000 ft (software setting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNOx Emissions:\u003c\/strong\u003e \u0026lt; 20 ppm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 3\/4\" NPT (supply\/return)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz; outdoor temperature sensor included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~17‑3\/4\" × 19‑3\/4\" × 33‑3\/4\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 108 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e 30 psi pressure relief valve, installation fittings, outdoor temperature sensor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Lower Fuel Bills\u003c\/h4\u003e\n\u003cp\u003e\nAt \u003cstrong\u003e95% AFUE\u003c\/strong\u003e with a \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, the B1HE‑85 matches output to demand to reduce cycling and help cut gas costs.\n\u003c\/p\u003e\n\n\u003ch4\u003eRight‑Sized For Small To Mid‑Size Homes\u003c\/h4\u003e\n\u003cp\u003e\nThe \u003cstrong\u003e8.5–85 MBH\u003c\/strong\u003e input range is a great fit for many baseboard and radiant systems. It runs gently on mild days and ramps up when winter really hits—keeping rooms comfortable without oversizing.\n\u003c\/p\u003e\n\n\u003ch4\u003eStainless Steel Heat Exchanger\u003c\/h4\u003e\n\u003cp\u003e\nThe \u003cstrong\u003eInox‑Radial\u003c\/strong\u003e stainless‑steel heat exchanger is purpose‑built for condensing operation—resisting corrosion and supporting long service life.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Quiet, Easy To Service\u003c\/h4\u003e\n\u003cp\u003e\nA slim, \u003cstrong\u003e17.7\"‑wide\u003c\/strong\u003e cabinet and \u003cstrong\u003efront‑access\u003c\/strong\u003e components make tight installs and annual service straightforward. Sound levels are designed to be pleasantly quiet in typical mechanical spaces.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Venting For Retrofits\u003c\/h4\u003e\n\u003cp\u003e\nChoose \u003cstrong\u003econcentric 80\/125 mm\u003c\/strong\u003e (or \u003cstrong\u003e100\/150 mm\u003c\/strong\u003e) or \u003cstrong\u003e2\"\/3\"\/4\" two‑pipe\u003c\/strong\u003e venting to handle longer runs and tricky layouts—ideal for replacements where routing is limited.\n\u003c\/p\u003e\n\n\u003ch4\u003eSmartphone Control With ViCare\u003c\/h4\u003e\n\u003cp\u003e\nBuilt‑in WiFi connects to the \u003cstrong\u003eViCare\u003c\/strong\u003e app so you can view temperatures, set schedules, and receive alerts right from your phone.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325445683,"sku":"VIESB1HE85","price":3342.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_79cdf060-128a-4286-9423-423684b533e1.png?v=1771541512"},{"product_id":"viessmann-7722775-vitodens-100-w-b1he-199-199-000-btu-high-efficiency-hyrdronic-boiler","title":"Viessmann 7722775 Vitodens 100-W B1HE-199 199,000 BTU High Efficiency Hyrdronic Boiler","description":"\u003ch2\u003eHeat Your Home Smarter With The Viessmann Vitodens 100‑W B1HE‑199 | 199,000 BTU Wall‑Hung Condensing Boiler (7722775)\u003c\/h2\u003e\n\n\n\u003cp\u003e\nLooking for powerful, efficient heat without giving up floor space? The \u003cstrong\u003eVitodens 100‑W B1HE‑199\u003c\/strong\u003e is a \u003cstrong\u003eheating‑only, wall‑hung gas condensing boiler\u003c\/strong\u003e that pairs everyday simplicity with serious performance. You get a \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, a wide \u003cstrong\u003e10:1 turndown\u003c\/strong\u003e to match output to demand, and Viessmann’s proven \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e for long‑term reliability. Built‑in WiFi connects to the \u003cstrong\u003eViCare\u003c\/strong\u003e app so you can check status and adjust schedules right from your phone.\n\u003c\/p\u003e\n\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722775 (Vitodens 100‑W B1HE‑199, Heating‑Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing Hydronic Boiler (Heating‑Only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (software conversion; no mechanical changes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 19.9–199 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 187 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water):\u003c\/strong\u003e 163 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Operating Pressure:\u003c\/strong\u003e 60 psig\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting (Coaxial):\u003c\/strong\u003e 80\/125 mm concentric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting (Two‑Pipe):\u003c\/strong\u003e 3\" polypropylene\/CPVC (direct‑vent sealed combustion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 1\" NPT (supply\/return)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 3\/4\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Built‑in boiler pump, 30 psi pressure relief valve, installation fittings, outdoor temperature sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~17.7\" × ~22\" × ~39\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAltitude:\u003c\/strong\u003e Approved to 10,000 ft (no input de‑rate in software)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch4\u003eHigh Efficiency, Lower Fuel Bills\u003c\/h4\u003e\n\u003cp\u003e\nThe Vitodens 100‑W runs at \u003cstrong\u003e95% AFUE\u003c\/strong\u003e and modulates over a \u003cstrong\u003e10:1\u003c\/strong\u003e range to match real‑world loads. That means fewer on\/off cycles, quieter operation, and less wasted energy throughout the heating season.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eStainless Steel Heat Exchanger\u003c\/h4\u003e\n\u003cp\u003e\nAt the core is Viessmann’s \u003cstrong\u003eInox‑Radial\u003c\/strong\u003e stainless‑steel heat exchanger, built to resist corrosion in condensing operation and deliver steady efficiency year after year.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eCompact, Wall‑Hung Footprint\u003c\/h4\u003e\n\u003cp\u003e\nA slim \u003cstrong\u003e17.7‑inch‑wide\u003c\/strong\u003e cabinet mounts on the wall to free up floor space. Front‑access service points and bottom‑entry piping help speed up installation and maintenance.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eFlexible Fuel \u0026amp; Venting\u003c\/h4\u003e\n\u003cp\u003e\nSwitch between \u003cstrong\u003enatural gas and LP\u003c\/strong\u003e in software—no orifice swap needed. Choose \u003cstrong\u003e80\/125 mm concentric\u003c\/strong\u003e or \u003cstrong\u003e3\" two‑pipe\u003c\/strong\u003e venting to work around longer runs and tricky retrofit layouts.\n\u003c\/p\u003e\n\n\n\u003ch4\u003eSmartphone Control With ViCare\u003c\/h4\u003e\n\u003cp\u003e\nBuilt‑in WiFi connects to Viessmann’s \u003cstrong\u003eViCare\u003c\/strong\u003e app so you can view temperatures, set schedules, and get alerts from virtually anywhere.\n\u003c\/p\u003e\n\n\u003cp\u003e Want to learn more about this boiler? Read more about it in our article on \u003ca href=\"https:\/\/plumbing-deals.com\/blogs\/plumbing-blog\/the-best-steam-boilers-of-2025-a-comprehensive-guide\"\u003ethe best steam boilers.\u003c\/a\u003e\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325412915,"sku":"VIESB1HE199","price":4348.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_9ea37a92-b89f-403e-9d2e-71562715924d.png?v=1771541381"},{"product_id":"viessmann-7722779-vitodens-200-w-b2he-120-high-efficiency-hydronic-boiler","title":"Viessmann 7722779 Vitodens 200-W B2HE-120 High Efficiency Hydronic Boiler","description":"\u003ch2\u003ePower Your Home With Viessmann 7722779 Vitodens 200-W B2HE-120 120 MBH High-Efficiency Hydronic Boiler\u003c\/h2\u003e \u003cp\u003e Need reliable, quiet heat with lower fuel bills? The \u003cstrong\u003eVitodens 200-W B2HE-120\u003c\/strong\u003e is a wall-mounted \u003cstrong\u003egas-fired condensing boiler\u003c\/strong\u003e that pairs a stainless Inox-Radial heat exchanger with a modulating MatriX-Plus burner for steady comfort, 95% AFUE performance, and flexible venting—great for homes and light commercial spaces. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722779\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall-Mounted Gas-Fired Condensing (Heat-Only) Hydronic Boiler\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 8.5–120 MBH input (NG); Net AHRI 98 MBH; 95% AFUE\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless-steel Inox-Radial heat exchanger; MatriX-Plus modulating cylinder burner\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Sound rating 59 dB (max) \/ 34 dB (min); max condensate 1.2 USG\/h; altitude operation up to 10,000 ft\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e Heating supply\/return 3\/4\" NPTM; DHW tank supply\/return 3\/4\" NPT; gas 3\/4\" NPTF; 3\" (80 mm) flue with 5\" (125 mm) coaxial air or 3\" single-pipe; direct-vent; vent runs up to 180 ft; 120 VAC, 60 Hz\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 33-3\/8\" H × 17-3\/4\" W × 19-3\/4\" D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Pressure gauge; installation fittings with 30 psig PRV; DHW sensor; on-board 7\" touchscreen control with outdoor sensor; wall-mount bracket \u0026amp; hardware; integral variable-speed boiler pump\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e Constructed to CSA B51 \u0026amp; ASME Section IV; low-NOx (\u0026lt;20 ppm); compliant with SCAQMD 1146.2\/BAAQMD Reg. 9-6\/SJVAPCD 4308\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat-exchanger warranty (residential); parts up to 5 years with registration—see Viessmann warranty sheet\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Fuel With High Efficiency\u003c\/h4\u003e \u003cp\u003eAt up to 95% AFUE with intensive condensation, the B2HE-120 turns more of every therm into usable heat—helping trim monthly energy costs without sacrificing comfort.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA wide input range (8.5–120 MBH) lets the boiler modulate to match changing loads, delivering steady, quiet heat and reducing short-cycling for longer component life.\u003c\/p\u003e \u003ch4\u003eDurable Materials, Easier Care\u003c\/h4\u003e \u003cp\u003eThe stainless-steel Inox-Radial heat exchanger and MatriX-Plus burner are engineered for clean combustion and long service—designed to resist corrosion and maintain efficiency over time.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Flexibility\u003c\/h4\u003e \u003cp\u003eMultiple venting options (coaxial or two-pipe) with runs up to 180 ft simplify layouts, while standard 3\/4\" connections and an integral variable-speed pump streamline piping and commissioning.\u003c\/p\u003e \u003ch4\u003eSmart Controls \u0026amp; Connectivity\u003c\/h4\u003e \u003cp\u003eA built-in 7\" color touchscreen with WiFi enables outdoor-reset control, multi-temperature space heating, and intuitive setup so systems start quickly and run efficiently day-to-day.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/ca\/pdfs\/wall-mount\/vitodens_200-b2he_tdm.pdf\/_jcr_content\/renditions\/original.media_file.download_attachment.file\/vitodens_200-b2he_tdm.pdf\"\u003eTechnical Data Manual\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/us\/flyers\/Vitodens_200_W_B2HE_06_2021.pdf\/_jcr_content\/renditions\/original.media_file.download_attachment.file\/Vitodens_200_W_B2HE_06_2021.pdf\"\u003eProduct Flyer\u003c\/a\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325576755,"sku":"VIESB2HE120","price":5895.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_d6ceb4df-ca81-48f7-96de-768109c58a3b.png?v=1769701693"},{"product_id":"viessmann-7722776-vitodens-100-w-b1ke-120-120-000-btu-high-efficiency-combination-boiler","title":"Viessmann 7722776 Vitodens 100-W B1KE-120 120,000 BTU High Efficiency Combination Boiler","description":"\u003ch2\u003eViessmann 7722776 Vitodens 100‑W B1KE‑120 120,000 BTU High‑Efficiency Combination Boiler\u003c\/h2\u003e\n\u003cp\u003e\nMeet the \u003cstrong\u003eVitodens 100‑W B1KE‑120\u003c\/strong\u003e—Viessmann’s compact, wall‑hung \u003cstrong\u003e120,000 BTU\u003c\/strong\u003e \n\u003cstrong\u003ehigh‑efficiency condensing combi boiler\u003c\/strong\u003e that delivers space heat and continuous on‑demand hot water in one streamlined appliance. \nWith a \u003cstrong\u003e95% AFUE\u003c\/strong\u003e, a \u003cstrong\u003e10:1 turndown ratio\u003c\/strong\u003e, and a durable \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e, it’s engineered to lower operating costs while keeping comfort steady. Built‑in WiFi brings Viessmann’s \u003cstrong\u003eViCare\u003c\/strong\u003e app to your phone for remote control and scheduling.\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 7722776 (Vitodens 100‑W B1KE‑120, Combi)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Gas‑Fired Condensing \u003cem\u003eCombi\u003c\/em\u003e Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (field convertible; no mechanical adjustments)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpace‑Heating Input:\u003c\/strong\u003e 12–120 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity:\u003c\/strong\u003e 113 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI Rating:\u003c\/strong\u003e 98 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurndown Ratio:\u003c\/strong\u003e 10:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Continuous Draw:\u003c\/strong\u003e 3.3 GPM @ 77°F (43K) rise\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Max Supply Temperature:\u003c\/strong\u003e 140°F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Minimum Activation Flow:\u003c\/strong\u003e 0.5 GPM (plate heat exchanger)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDHW Max Flow Through HX:\u003c\/strong\u003e 3.7 GPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Size \/ Options:\u003c\/strong\u003e 3\" flue; 5\" × 3\" coaxial or 2‑pipe PP(s)\/CPVC; vent runs up to 180 ft (layout‑dependent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNOx Emissions:\u003c\/strong\u003e \u0026lt; 20 ppm (at 3% O\u003csub\u003e2\u003c\/sub\u003e)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAltitude:\u003c\/strong\u003e Up to 10,000 ft without input de‑rate (software setting)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e ~59 dB at full load; ~34 dB at part load (1 m)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 3\/4\" NPT (supply\/return)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e 17.7\" × 19.7\" × 33.8\" (450 × 500 × 859 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 110 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e 30 psi boiler PRV, 150 psi DHW PRV, outdoor sensor, integral boiler\/DHW pump\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime (residential applications)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHigh Efficiency, Low Operating Costs\u003c\/h4\u003e\n\u003cp\u003eThe Vitodens 100‑W pairs a \u003cstrong\u003e95% AFUE\u003c\/strong\u003e with a wide \u003cstrong\u003e10:1 turndown\u003c\/strong\u003e to match output to demand, minimizing cycling and fuel use. Viessmann’s \u003cstrong\u003eMatriX‑Plus burner\u003c\/strong\u003e and \u003cstrong\u003eLambda Pro Plus\u003c\/strong\u003e combustion control deliver clean, efficient performance on natural gas or LP.\u003c\/p\u003e\n\u003ch4\u003eOn‑Demand Domestic Hot Water\u003c\/h4\u003e\n\u003cp\u003eEnjoy continuous hot water without a tank. The B1KE‑120’s plate heat exchanger delivers up to \u003cstrong\u003e3.3 GPM at a 77°F rise\u003c\/strong\u003e, with a maximum DHW temperature of \u003cstrong\u003e140°F\u003c\/strong\u003e and quick response from a \u003cstrong\u003e0.5 GPM\u003c\/strong\u003e minimum activation flow. Ideal for typical two‑bath homes and light‑commercial applications.\u003c\/p\u003e\n\u003ch4\u003eDurable Stainless Steel Core\u003c\/h4\u003e\n\u003cp\u003eAt the heart is Viessmann’s \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e—paired with the \u003cstrong\u003eMatriX‑Plus\u003c\/strong\u003e stainless steel burner—for long service life and sustained efficiency. The series carries a \u003cstrong\u003elimited lifetime residential warranty\u003c\/strong\u003e for added peace of mind.\u003c\/p\u003e\n\u003ch4\u003eQuiet, Compact, Easy To Install\u003c\/h4\u003e\n\u003cp\u003eA slim \u003cstrong\u003e17.7\"‑wide\u003c\/strong\u003e cabinet, \u003cstrong\u003ezero clearance to combustibles\u003c\/strong\u003e, and \u003cstrong\u003efront‑access service\u003c\/strong\u003e make tight installs simple. Bottom connections streamline piping, and sound levels around \u003cstrong\u003e59 dB (full load)\u003c\/strong\u003e help keep mechanical spaces quiet.\u003c\/p\u003e\n\u003ch4\u003eFlexible Fuel \u0026amp; Venting\u003c\/h4\u003e\n\u003cp\u003eFactory‑set for natural gas with straightforward LP conversion, the 100‑W supports concentric \u003cstrong\u003e5\" × 3\" coax\u003c\/strong\u003e or \u003cstrong\u003e3\" two‑pipe\u003c\/strong\u003e venting options with runs up to \u003cstrong\u003e180 ft\u003c\/strong\u003e (layout‑dependent). It’s rated for \u003cstrong\u003ealtitudes to 10,000 ft\u003c\/strong\u003e without input de‑rate and meets \u003cstrong\u003e\u0026lt;20 ppm NOx\u003c\/strong\u003e requirements.\u003c\/p\u003e\n\u003ch4\u003eSmartphone Control Built In\u003c\/h4\u003e\n\u003cp\u003eIntegrated WiFi connects to the \u003cstrong\u003eViCare\u003c\/strong\u003e app for remote temperature control, DHW scheduling, usage insights, and alerts—no add‑on gateway required.\u003c\/p\u003e\n\n\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/us\/flyers\/Vitodens_100_W_B1HE_B1KE_06_2021.pdf\/_jcr_content\/renditions\/original.media_file.download_attachment.file\/Vitodens_100_W_B1HE_B1KE_06_2021.pdf\"\u003eProduct Flyer\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.viessmann-us.com\/content\/dam\/public-brands\/us\/pdf\/technical-data-manuals\/vitodens_100-b1he_tdm.pdf\/_jcr_content\/renditions\/original.\/vitodens_100-b1he_tdm.pdf\"\u003eTechnical Data Manual\u003c\/a\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325642291,"sku":"VIESB1KE120","price":3973.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HE_120-MBH_Front_1280x1280_transparent_8536f1cb-dc1e-42e0-8b28-c5048a4e93ec.png?v=1771541391"},{"product_id":"viessmann-cu3a-125-vitocrossal-300-cu3a-125-000-btu-gas-condensing-boiler","title":"Viessmann CU3A-125 Vitocrossal 300 CU3A 125,000 BTU Gas Condensing Boiler","description":"\u003ch2\u003eElevate Your Heat With Viessmann CU3A-125 Vitocrossal 300 125 MBH Floor-Standing Condensing Boiler\u003c\/h2\u003e \u003cp\u003e Looking for high-output comfort with lower fuel bills and fewer callbacks? The \u003cstrong\u003eVitocrossal 300 CU3A-125\u003c\/strong\u003e is a floor-standing \u003cstrong\u003egas-fired condensing boiler\u003c\/strong\u003e that pairs Viessmann’s stainless \u003cstrong\u003eInox-Crossal\u003c\/strong\u003e heat exchanger with a self-calibrating MatriX dome burner for quiet, steady heat and 95% AFUE performance—ideal for radiator retrofits or multi-zone fin-tube systems. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e CU3A-125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Floor-Standing Gas-Fired Condensing (Heat-Only) Hydronic Boiler\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 25–125 MBH input; Net AHRI 101 MBH; 95% AFUE\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless-steel Inox-Crossal heat exchanger; MatriX dome modulating burner\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e High-mass design with ~13.0 USG water content; sound rating ~55 dB max \/ 33 dB min; condensate up to ~1.2 USG\/h\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e 1¼\" NPTM heating supply \u0026amp; return; ¾\" NPTF gas; ¾\" NPTF PRV; 3\" (80 mm) flue \u0026amp; 3\" combustion air; ¾\" hose condensate\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 61.5\" H (closed) \/ 67\" H (open) × 26\" W × 27\" D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Vitotronic outdoor-reset control with outdoor sensor; 30 psig PRV \u0026amp; fittings; T\u0026amp;P gauge (field-installed on supply); factory pre-wired\/piped internals; NG factory-set with LP conversion labels in literature set\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ENERGY STAR; ANSI Z21.13\/CSA 4.9; ASME Section IV \/ CSA B51 construction\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat-exchanger warranty (residential)—see Viessmann warranty sheet\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Fuel With High Efficiency\u003c\/h4\u003e \u003cp\u003eAt 95% AFUE and up to 98% efficient under low-return temps, the CU3A condenses deeply to turn more of every therm into usable heat—cutting operating costs season after season.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA 25–125 MBH modulating input and high-mass water volume smooth out cycling and deliver quiet, even heat across changing loads—perfect for cast-iron radiators or mixed high-temp zones.\u003c\/p\u003e \u003ch4\u003eBuilt To Last\u003c\/h4\u003e \u003cp\u003eThe Inox-Crossal stainless heat exchanger is constructed to ASME Section IV\/CSA B51 and designed for a self-cleaning condensate “sheen,” helping maintain efficiency and resist corrosion over time.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Flexibility\u003c\/h4\u003e \u003cp\u003eDirect-vent coaxial or two-pipe options with long allowable runs (layout-dependent, up to ~198 ft per Viessmann guidelines) make venting straightforward. Standard 1¼\" supply\/return and ¾\" gas keep piping simple.\u003c\/p\u003e \u003ch4\u003eSmart Controls \u0026amp; Compatibility\u003c\/h4\u003e \u003cp\u003eThe integrated Vitotronic control with outdoor reset, zone-circuit capability, and start-up wizard speeds commissioning. High-altitude operation is supported up to 10,000 ft (electronic adjustment; de-rate applies).\u003c\/p\u003e \u003ch4\u003eFits Your Space\u003c\/h4\u003e \u003cp\u003eA compact footprint (26\" × 27\") and zero-clearance to combustibles rating allow closet or alcove installs while keeping full front\/rear service access.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325707827,"sku":"VIESCU3A125","price":6798.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitocrossal-300-CU3A_Front_1280x1280_transparent_df55538a-e22e-42ab-ad2c-413200e1ec9a.png?v=1769701694"},{"product_id":"viessmann-cu3a-160-vitocrossal-300-cu3a-160-000-btu-gas-condensing-boiler","title":"Viessmann CU3A-160 Vitocrossal 300 CU3A 160,000 BTU Gas Condensing Boiler","description":"\u003ch2\u003eRight-Size Your Heat With Viessmann CU3A-160 Vitocrossal 300 160 MBH Floor-Standing Condensing Boiler\u003c\/h2\u003e \u003cp\u003e Need steady, high-temperature comfort without the fuel waste? The \u003cstrong\u003eVitocrossal 300 CU3A-160\u003c\/strong\u003e is a floor-standing \u003cstrong\u003egas-fired condensing boiler\u003c\/strong\u003e that combines a high-mass stainless \u003cstrong\u003eInox-Crossal\u003c\/strong\u003e heat exchanger with a modulating MatriX dome burner for quiet, even heat and 95% AFUE—ideal for cast-iron radiator retrofits and multi-zone fin-tube systems. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e CU3A-160\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Floor-Standing Gas-Fired Condensing (Heat-Only) Hydronic Boiler\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 43–160 MBH input; Net AHRI 129 MBH; 95% AFUE\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless-steel Inox-Crossal heat exchanger; MatriX modulating dome burner\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Sound 53 dB (max) \/ 33 dB (min); condensate up to ~1.6 USG\/h; boiler water content 18.8 USG; altitude operation to 10,000 ft (de-rate applies)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e Heating supply\/return 1¼\" NPTM; PRV ¾\" NPTF; boiler drain 1\" NPTM; gas ¾\" NPTF; direct-vent; 4\" flue \/ 3\" combustion air; allowable vent lengths up to ~198 ft (layout-dependent)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 61.5\"–67\" H × 26\" W × 31.5\" D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Vitotronic 200 outdoor-reset control with outdoor sensor; installation fittings with 30 psig PRV; T\u0026amp;P gauge (field-installed on supply); pre-wired and internally piped; NG factory-set with LP conversion labels in literature set\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ENERGY STAR (95% AFUE); ANSI Z21.13\/CSA 4.9; ASME Section IV \/ CSA B51; zero-clearance to combustibles when installed per instructions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat-exchanger warranty (residential); parts coverage up to 5 years with registration—see Viessmann warranty\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Fuel With High Efficiency\u003c\/h4\u003e \u003cp\u003eAt 95% AFUE—and up to 98% efficiency at low return temps—the CU3A-160 squeezes more heat out of every therm, reducing monthly fuel spend while keeping comfort high.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA 43–160 MBH input range and high-mass water volume minimize short-cycling, delivering smooth, quiet heat across changing loads—great for older radiators and mixed high-temp zones.\u003c\/p\u003e \u003ch4\u003eBuilt To Last\u003c\/h4\u003e \u003cp\u003eThe Inox-Crossal stainless heat exchanger and MatriX burner are engineered for clean combustion and self-shedding condensate, helping maintain efficiency and resist corrosion over years of service.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Flexibility\u003c\/h4\u003e \u003cp\u003eChoose coaxial or two-pipe direct venting with long allowable runs (up to ~198 ft, layout-dependent). Standard 1¼\" supply\/return and ¾\" gas connections simplify piping and commissioning.\u003c\/p\u003e \u003ch4\u003eSmart Controls \u0026amp; Compatibility\u003c\/h4\u003e \u003cp\u003eOn-board Vitotronic outdoor-reset control supports multi-circuit designs and easy setup, so systems start quickly and run efficiently in day-to-day operation.\u003c\/p\u003e \u003ch4\u003eFits Your Space\u003c\/h4\u003e \u003cp\u003eCompact footprint and a listing for zero-clearance to combustibles enable closet or alcove installs while keeping full front\/rear service access.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932325838899,"sku":"VIESCU3A160","price":7183.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitocrossal-300-CU3A_Front_1280x1280_transparent.png?v=1769701621"},{"product_id":"viessmann-cu3a-199-vitocrossal-300-cu3a-199-000-btu-gas-condensing-boiler","title":"Viessmann CU3A-199 Vitocrossal 300 CU3A 199,000 BTU Gas Condensing Boiler","description":"\u003ch2\u003ePower Large Loads With Viessmann CU3A-199 Vitocrossal 300 199 MBH Gas Condensing Boiler\u003c\/h2\u003e \u003cp\u003e Heating a big home or light-commercial space with steady, quiet comfort? The \u003cstrong\u003eVitocrossal 300 CU3A-199\u003c\/strong\u003e is a floor-standing \u003cstrong\u003ehydronic condensing boiler\u003c\/strong\u003e that pairs a high-mass stainless heat exchanger with a modulating MatriX dome burner for 95% AFUE efficiency, flexible venting up to long runs, and dependable day-to-day performance. \u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e CU3A-199\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Floor-Standing Gas-Fired Condensing (Heat-Only) Hydronic Boiler\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSize\/Capacity:\u003c\/strong\u003e 43–199 MBH input; Net AHRI 161 MBH; 95% AFUE\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\/Finish:\u003c\/strong\u003e Stainless-steel Inox-Crossal heat exchanger; MatriX modulating dome burner\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Sound 58 dB (max) \/ 33 dB (min); condensate up to 2.1 USG\/h; boiler water content 18.8 USG\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConnections\/Fit:\u003c\/strong\u003e Heating supply\/return 1¼\" NPTM; PRV ¾\" NPTF; boiler drain 1\" NPTM; gas ¾\" NPTF; direct-vent; 4\" flue \/ 3\" combustion air; venting options support long equivalent lengths (layout-dependent); altitude operation to 10,000 ft (18% de-rate)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 61.5\" H (67\" with control open) × 26\" W × 31.5\" D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Vitotronic outdoor-reset control with outdoor sensor; installation fittings with 30 psig PRV; temperature \u0026amp; pressure gauge (field-installed on supply); pre-wired and internally piped; NG factory-set with field LP conversion\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ENERGY STAR; ANSI Z21.13\/CSA 4.9; heat exchanger constructed to ASME Section IV \u0026amp; CSA B51\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime heat-exchanger warranty (residential); parts up to 5 years with registration—see Viessmann warranty\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSave Fuel With High Efficiency\u003c\/h4\u003e \u003cp\u003eAt 95% AFUE—and up to 98% under low return temperatures—the CU3A-199 turns more of every therm into usable heat, helping trim monthly energy costs.\u003c\/p\u003e \u003ch4\u003eEveryday Performance You Can Feel\u003c\/h4\u003e \u003cp\u003eA broad 43–199 MBH modulation range and high-mass 18.8-gallon water volume reduce short-cycling for smoother, quieter heat across changing loads.\u003c\/p\u003e \u003ch4\u003eBuilt To Last\u003c\/h4\u003e \u003cp\u003eThe Inox-Crossal stainless heat exchanger and MatriX burner are engineered for clean combustion and long service life, with robust ASME\/CSA construction.\u003c\/p\u003e \u003ch4\u003eInstaller-Friendly Flexibility\u003c\/h4\u003e \u003cp\u003eCoaxial or two-pipe direct venting with long allowable runs simplifies layouts. Standard 1¼\" supply\/return and ¾\" gas connections streamline piping and commissioning.\u003c\/p\u003e \u003ch4\u003eSmart Controls \u0026amp; Compatibility\u003c\/h4\u003e \u003cp\u003eOn-board Vitotronic control with outdoor reset and start-up wizard speeds setup and supports multi-circuit designs for efficient everyday operation.\u003c\/p\u003e \u003ch4\u003eFits Your Space\u003c\/h4\u003e \u003cp\u003eA compact footprint and zero-clearance listing to combustibles enable closet or alcove installs while keeping full front\/rear service access.\u003c\/p\u003e","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":43932326002739,"sku":"VIESCU3A199","price":8332.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitocrossal-300-CU3A_Front_1280x1280_transparent_213e975a-11c7-46c5-a8a5-8d3c6f6e055e.png?v=1769700682"},{"product_id":"viessmann-2-3-way-mixing-valve-7134746","title":"Viessmann 2\" 3-Way Mixing Valve - 7134746","description":"The 3-way mixing valve mixes cooler heating system\/circuit return water temperature into the hot water boiler supply to the heating loop circuit, the amount depending on the mixing blade position. The mixing valve has optimum water temperature control characteristics in any mixing blade position. Threaded NPT connections (female). The 3-way mixing valve can only be installed in the vertical position (to avoid airpockets and dirt build-up). If, however, there is any welding or soldering to be done around the mixing valve, the complete rotary insert must be removed to prevent damage to the O-ring seals. Remove the four hexagon bolts only, and the total assembly will slide out of the housing.","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":44048051601459,"sku":"VIES7134746","price":749.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/3801359_4842238_primary.jpg?v=1771974637"},{"product_id":"viessmann-1-1-2-3-way-mixing-valve-7134745","title":"Viessmann 1-1\/2\" 3-Way Mixing Valve - 7134745","description":"The 3-way mixing valve mixes cooler heating system\/circuit return water temperature into the hot water boiler supply to the heating loop circuit, the amount depending on the mixing blade position. The mixing valve has optimum water temperature control characteristics in any mixing blade position. Threaded NPT connections (female). The 3-way mixing valve can only be installed in the vertical position (to avoid airpockets and dirt build-up). If, however, there is any welding or soldering to be done around the mixing valve, the complete rotary insert must be removed to prevent damage to the O-ring seals. Remove the four hexagon bolts only, and the total assembly will slide out of the housing.","brand":"VIESSMANN","offers":[{"title":"Default Title","offer_id":44048051634227,"sku":"VIES7134745","price":640.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/1081564_VIESSMANN_7134745_1_1_2_3_WAY_MIXING_VALVE_1.jpg?v=1772141255"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/collections\/viessmann_logo_1696946762__23873.webp?v=1771894535","url":"https:\/\/plumbing-deals.com\/collections\/viessmann.oembed?page=3","provider":"Plumbing Deals","version":"1.0","type":"link"}