Water Heater Parts & Accessories

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Make sure your water heater is working effectively and efficiently with the proper water heater parts and water heater accessories. Browse below or contact our experts for help finding the right water heater part for your system.
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Learn More About Calefactio CSM2
$25.00
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Subscription Eligible
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Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Factory-Direct
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Subscription Eligible
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Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Learn More About Rinnai 224080PP
Rinnai
Rinnai Concentric Venting Condensing Vent Pipe Extension - 39", Tankless Water Heater Accessory, Addition
4% Buy This
$37.00
In-Stock
Learn More About Noritz PVT-HL
Noritz - PVT-HL - Horizontal Hood /Louvre Vent Termination - For NRC83, NRC661, NRC711, NRC98, NRC1111, NCC1991 Series Units
3% Buy This
$39.00
In-Stock
Learn More About DuraVent 3PPS-E90C
Learn More About Rinnai 169044
Rinnai
Rinnai - 169044 - Pipe Clamp - For All Rinnai Ultra, Luxury and Value Series Tankless Water Heaters
2% Buy This
$6.00
In-Stock
Learn More About Takagi 9007607005
$48.00
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Subscription Eligible
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Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
In-Stock
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Subscription Eligible
Learn More
Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
Learn More About DuraVent 4PPS-E90C
Learn More About Rinnai RGB-25U-C
Rinnai
Rinnai - RGB-25U-C - Universal Recess Box - For Rinnai RL94e, RL75e, V75e, and V65e (VA, VB, VC)
2% Buy This
$175.00
In-Stock
Learn More About Rinnai 223177PP
Rinnai
Rinnai Concentric Venting Condensing Horizontal Termination Kit - 21", Tankless Water Heater Accessory, Addition
2% Buy This
$73.00
In-Stock
Learn More About Rinnai 103000038
Rinnai
Rinnai - 103000038 - Scale Cutter Water Conditioning System - For All Rinnai Ultra, Luxury and Value Series Tankless Water Heaters
1% Buy This
$219.00
In-Stock
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About DuraVent 3PPS-E45C
Learn More About Water Heater Accessories WHKIT-ATH-T
Includes (1) A.O. Smith 100314968 Inline Descaler System, (1) A.O. Smith 9007607005 Neutralizer Kit, (1) Webstone 44443WPR 3/4" Threaded Isolation Valve Kit
1% Buy This
$273.00
Factory-Direct
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Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About Water Heater Accessories WHKIT-RL-T
Includes (1) Rinnai 103000038 Water Conditioning System, (1) Webstone 44443WPR 3/4" Threaded Isolation Valve Kit
1% Buy This
$244.00
In-Stock
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Free Shipping
Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Learn More About DuraVent 4PPS-E45C
Learn More About Rinnai 223176PP
Rinnai
Rinnai Concentric Venting Condensing Horizontal Termination Kit - 12", Tankless Water Heater Accessory, Addition
1% Buy This
$70.00
In-Stock
Learn More About Rinnai 224078PP
Rinnai
Rinnai Concentric Venting Condensing 90 Degree Elbow, Tankless Water Heater Accessory, Addition
1% Buy This
$25.00
In-Stock