{"product_id":"pennco-silver-15c-9d-299-000-btu-cast-iron-natural-gas-boiler","title":"Pennco Silver 15C-9D 299,000 BTU Cast Iron Natural Gas Boiler","description":"\u003ch2\u003eWarm Larger Homes With The Pennco Silver 15C‑9D 299,000 BTU Cast‑Iron Hot Water Gas Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nNeed serious heating power for big homes or multi‑zone hydronic systems? The \u003cstrong\u003ePennco Silver 15C‑9D\u003c\/strong\u003e is a high‑capacity, \n\u003cstrong\u003ecast‑iron, chimney‑vented hot water boiler\u003c\/strong\u003e built for dependable comfort and straightforward service. It delivers \n\u003cstrong\u003e84% AFUE\u003c\/strong\u003e efficiency, uses a smart \u003cstrong\u003eHydrolevel Fuel Smart\u003c\/strong\u003e control with built‑in low‑water cut‑off (LWCO), and pairs an integrated \n\u003cstrong\u003edraft hood and motorized vent damper\u003c\/strong\u003e to help reduce standby losses—ideal for replacements where code‑compliant, natural‑draft venting is preferred.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pennco\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 15C‑9D (Silver 15C Series)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Gas‑Fired, Non‑Condensing Hot Water Boiler (Cast Iron, Category I, Chimney Vent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas (Propane version available — add “P” suffix)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput (NG):\u003c\/strong\u003e 299,000 BTU\/h\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity (NG):\u003c\/strong\u003e 252,000 BTU\/h\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet AHRI (Water, NG):\u003c\/strong\u003e 219,000 BTU\/h\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e 84.0%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIgnition:\u003c\/strong\u003e Intermittent electronic; Hydrolevel control with circulator management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Integral draft diverter with automatic vent damper; 7\" flue; chimney vent (Category I)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Connections:\u003c\/strong\u003e 1‑1\/4\" NPT supply \u0026amp; return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Inlet:\u003c\/strong\u003e 1\/2\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Content:\u003c\/strong\u003e 14.4 gallons\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V AC, 60 Hz; \u0026lt;12 A (15 A circuit recommended)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 30‑3\/4\" × 36‑3\/8\" × 26‑1\/2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e AHRI certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Hydrolevel Fuel Smart control with digital display \u0026amp; LWCO, motorized vent damper, insulated jacket, combo temperature\/pressure gauge, 3\/4\" drain valve, 30 psi ASME relief valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10‑Year Limited heat exchanger (residential; see terms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Output For Larger Homes\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003e299,000 BTU\/h input\u003c\/strong\u003e and a \u003cstrong\u003e219,000 BTU\/h Net AHRI (water)\u003c\/strong\u003e rating, the 15C‑9D delivers the capacity multi‑radiator homes need—when sized to your connected radiation and heat loss.\n\u003c\/p\u003e\n\n\u003ch4\u003eFuel‑Saving Smart Control\u003c\/h4\u003e\n\u003cp\u003e\nThe \u003cstrong\u003eHydrolevel Fuel Smart\u003c\/strong\u003e control features a digital display, built‑in \u003cstrong\u003elow‑water cut‑off\u003c\/strong\u003e, and economy settings that target lower water temperatures when load is light—helping reduce fuel use without sacrificing comfort.\n\u003c\/p\u003e\n\n\u003ch4\u003eLow‑Profile Draft Diverter \u0026amp; Vent Damper\u003c\/h4\u003e\n\u003cp\u003e\nAn \u003cstrong\u003eintegral draft hood\u003c\/strong\u003e and \u003cstrong\u003emotorized vent damper\u003c\/strong\u003e lower overall height and help limit standby chimney losses. It’s a practical fit for \u003cstrong\u003elow‑ceiling basements\u003c\/strong\u003e and straightforward, code‑compliant chimney venting.\n\u003c\/p\u003e\n\n\u003ch4\u003eCast‑Iron Durability\u003c\/h4\u003e\n\u003cp\u003e\nA rugged \u003cstrong\u003ecast‑iron heat exchanger\u003c\/strong\u003e with cast‑iron push nipples is pressure‑tested at the factory for long service life—well‑suited to baseboard and classic radiator systems.\n\u003c\/p\u003e\n\n\u003ch4\u003eInstaller‑Friendly Connections\u003c\/h4\u003e\n\u003cp\u003e\nStandard \u003cstrong\u003e1‑1\/4\" supply\/return tappings\u003c\/strong\u003e, a common \u003cstrong\u003e7\" flue\u003c\/strong\u003e, and clear access to controls simplify change‑outs and annual service.\n\u003c\/p\u003e\n\n\u003cbr\u003e\u003cp\u003eWant to learn more about this hydronic boiler? Read our blog on factors to consider before purchasing a hydronic boiler, pros and cons of hydronic boilers, \u003ca href=\"https:\/\/plumbing-deals.com\/plumbing-blog\/pumps-water-heaters-and-boilers-hydronic-boilers\/\"\u003eand hydronic boiler recommendations.\u003c\/a\u003e\u003c\/p\u003e\u003cbr\u003e","brand":"PENNCO BOILERS","offers":[{"title":"Default Title","offer_id":44013744357427,"sku":"PEN15C9D","price":5619.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/ecr-international-pennco-15c-series-boiler.jpg?v=1771541440","url":"https:\/\/plumbing-deals.com\/products\/pennco-silver-15c-9d-299-000-btu-cast-iron-natural-gas-boiler","provider":"Plumbing Deals","version":"1.0","type":"link"}