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Collection: Water Heaters Parts & Accessories

Discover a comprehensive range of parts and accessories designed to meet your specific water heater needs, ensuring your system's performance and longevity. Whether you're a homeowner or a skilled plumber or contractor, our carefully selected products are here to ensure your water heater operates flawlessly, all without breaking the bank.

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229 products

Black rectangular low loss header with four yellow and black flanged connection ports.

Viessmann Type 250/150 119GPM Max 4" ANSI Certified Flange Low Loss Header - 7537707

SKU #: VIES7537707   |   MPN #: 7537707

Regular price $2,797.84
Sale price $2,797.84 Regular price $0.00
MSRP: $2,797.84

Special Order. Expect 4-6 weeks for delivery, subject to change

Black rectangular low loss header with four yellow and black threaded ports for fluid connections.

Viessmann Type 200/120 80GPM Max 3" ANSI Certified Flange Low Loss Header - 7537706

SKU #: VIES7537706   |   MPN #: 7537706

Regular price $2,066.26
Sale price $2,066.26 Regular price $0.00
MSRP: $2,066.26

Special Order. Expect 4-6 weeks for delivery, subject to change

Black rectangular low loss header with four yellow and black threaded ports for fluid connections.

Viessmann Type 160/80 44GPM Max 2.5" ANSI Certified Flange Low Loss Header - 7537705

SKU #: VIES7537705   |   MPN #: 7537705

Regular price $1,704.45
Sale price $1,704.45 Regular price $0.00
MSRP: $1,704.45

Special Order. Expect 4-6 weeks for delivery, subject to change

Black metal 3-way mixing valve with four threaded ports and central control handle on white background.

Viessmann 1-1/4" 3-Way Mixing Valve - 7134744

SKU #: VIES7134744   |   MPN #: 7134744

Regular price $570.92
Sale price $570.92 Regular price $0.00
MSRP: $591

Special Order. Expect 4-6 weeks for delivery, subject to change

White and black cylindrical replacement cartridge with threaded brass connector base.

Caleffi 535006HA Replacement cartridge for 535HA 1/2", 3/4", 1"

SKU #: CALE535006HA   |   MPN #: 535006HA

Regular price $62.38
Sale price $62.38 Regular price $0.00
MSRP: $75.60

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi 200000 Thermostatic Control Head

SKU #: CALE200000   |   MPN #: 200000

Regular price $61.09
Sale price $61.09 Regular price $0.00
MSRP: $71.30

Special Order. Expect 4-6 weeks for delivery, subject to change

White wall-mounted thermostat with dial control, remote sensor probe with coiled cable, and adjustable knob attachment.

Caleffi 472000 THERMO CONTROL HWAED W/REMOTE+ADJ KNOB

SKU #: CALE472000   |   MPN #: 472000

Regular price $190.26
Sale price $190.26 Regular price $0.00
MSRP: $242

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi replacement cartridge with white body, black cap, and brass fitting connector.

Caleffi 535009HA Replacement cartridge for 535HA 1-1/4", 1-1/2", 2"

SKU #: CALE535009HA   |   MPN #: 535009HA

Regular price $176.92
Sale price $176.92 Regular price $0.00
MSRP: $228

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi replacement cartridge with brass top, metal mesh filter, black rubber seals, and white threaded body with black cap.

Caleffi 535004 REPLACEMENT CARTRIDGE X 5350-5351 1/2"-3

SKU #: CALE535004   |   MPN #: 535004

Regular price $56.10
Sale price $56.10 Regular price $0.00
MSRP: $66.80

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi thermostatic valve head with white body, control dial, attached capillary tube, wooden probe, and rubber gasket.

Caleffi 203502 Thermo.Contro Head w/compact probe

SKU #: CALE203502   |   MPN #: 203502

Regular price $189.03
Sale price $189.03 Regular price $0.00
MSRP: $240

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi Hydronic Solutions logo with green circular icon and company text on white background.

Caleffi 201000 THERMO CONTROL HEAD W/REMOTE ADJ KNOB

SKU #: CALE201000   |   MPN #: 201000

Regular price $104.63
Sale price $104.63 Regular price $0.00
MSRP: $127

Special Order. Expect 4-6 weeks for delivery, subject to change

Five white plastic gallon jugs of JC Whitlam Flow-Aide Descaler with blue labels arranged in a group.

JC Whitlam Flow-Aide Descaler - 1 Gallon (FLOW1) - 5 Pack

SKU #: WHTFLOW1x5   |   MPN #: FLOW1

Regular price $327.31
Sale price $327.31 Regular price $0.00
MSRP: $345.50

Available in stock

White CPVC water heater pan adapter fitting with black rubber gasket and threaded connections.

Oatey 1 in. CPVC Water Heater Pan Adapter Fitting in White - 34089

SKU #: CHEM34089   |   MPN #: 34089

Regular price $11.69
Sale price $11.69 Regular price $0.00
MSRP: $11.69

Available in stock

Tall gray cylindrical water heater tank with State brand logo, control panel, and multiple connection ports on front surface.

State Water Heater 80 Gallon, Commercial Vertical Round Jacketed Storage Tank - PVG-0080-0OVT

SKU #: STATEPVG0080OVT   |   MPN #: PVG-0080-0OVT

Regular price $2,610.97
Sale price $2,610.97 Regular price $0.00
MSRP: $2,779.15

Available in stock

Black coiled cable harness with white strain relief bands and two black connector clips.

Rinnai CX Cascade Cable Harness - 10' Length - REUCSAC1

SKU #: RINREUCSAC1   |   MPN #: REUCSAC1

Regular price $70.66
Sale price $70.66 Regular price $0.00
MSRP: $76

Available in stock

Tall cylindrical gray water heater tank with State logo, control panel, and multiple connection ports on front.

State Water Heater 120 Gallon, Commercial Vertical Round Jacketed Storage Tank - PVG-0120-0OVT

SKU #: STATEPVG01200OVT   |   MPN #: PVG-0120-0OVT

Regular price $2,929.86
Sale price $2,929.86 Regular price $0.00
MSRP: $3,075.81

Available in stock

Brass ball valve with red lever handle connected to 18-inch braided stainless steel flexible hose with female connectors on b

Sharkbite Max 3/4 in. Push-to-Connect x 3/4 in. FIP x 18 in. Braided Stainless Steel Water Heater Connector Ball Valve - UR3088FX18BV

SKU #: SHAU3088FLEX18BVLF   |   MPN #: UR3088FX18BV

Regular price $51.43
Sale price $51.43 Regular price $0.00
MSRP: $67.84

Available in stock

Braided stainless steel water heater connector with push-to-connect and female threaded brass fittings on each end.

Sharkbite Max 3/4 in. Push-to-Connect x 3/4 in. FIP x 18 in. Water Heater Connector in Braided Stainless Steel - UR3088FX18

SKU #: SHAUR3088FX18   |   MPN #: UR3088FX18

Regular price $28.06
Sale price $28.06 Regular price $0.00
MSRP: $32.33

Available in stock

Shallow aluminum water heater pan with white PVC drain fitting on side.

Oatey 28" Bulk Aluminum Water Heater Pan w/ 1-1/2" PVC Fitting - 34103

SKU #: CHEM34103   |   MPN #: 34103

Regular price $57.45
Sale price $57.45 Regular price $0.00
MSRP: $65.39

Available in stock

HSI ignition assembly with white ceramic electrode and metal mounting bracket on black base.

HSI Ignition Assembly for Water Heater

SKU #: STA100110771   |   MPN #: 100110771

Regular price $147.88
Sale price $147.88 Regular price $0.00
MSRP: $183

Available in stock

Revamp Your Water Heater

Whether you're considering upgrading your existing water heater, addressing worn-out components for better efficiency, or embarking on a fresh plumbing project, Plumbing Deals offers comprehensive solutions tailored to your requirements. Our meticulously selected parts and accessories not only prioritize quality and efficiency but also bring affordability to the forefront, guaranteeing optimal functioning of your water heater. Explore a diverse range of leading brands such as NoritzZilmetOateyWhitlam, and more, all available at competitive prices.

At Plumbing Deals, we cater to every aspect of maintaining and enhancing your water heater, offering a comprehensive range of essential components such as drip tees, storm collars, support clamps, magnetic systems, and much more. Elevate your water heater's performance to exceptional levels with our diverse selection of parts and accessories, seize incredible deals, and rely on our products to ensure your water heater operates seamlessly, your comfort remains high, and your budget stays intact. Delve into our extensive product categories now and transform every shower, bath, and household chore into a gratifying and efficient experience. Your satisfaction is our priority, and we are here to make your water heater maintenance hassle-free and effective.

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