Water Heater Parts & Accessories

Loading Image
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.
Featured Categories
Filter
  • Best Selling
  • Price: Low to High
  • Price: High to Low
  • Name: A-Z
  • Name: Z-A
  • Recommends Only
  • Closeouts Only
  • In-stock Only
  • Next Day Air Only
  • Availability
Model Number WT5-H-6 is a Hot Seller
Noritz Stainless Steel 5" Diameter Venting Adjustable Wall Thimble w/ Termination, 6"-7" Wall, For NC380 Series Water Heaters
Model WT5-H-6 is a Closeout
Closeout
$155.00
Only 2 In-Stock
Model Number MK-CB-1 is the Number 2 Seller
$309.00
In-Stock
Freight Icon
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.
Model Number RGB-25U-C is the Number 3 Seller
Rinnai
Rinnai - RGB-25U-C - Universal Recess Box - For Rinnai RL94e, RL75e, V75e, and V65e (VA, VB, VC)
3% Buy This
$175.00
In-Stock
Model Number 3PPS-E90C is the Number 4 Seller
$13.00
Only 1 In-Stock
Model Number RC-7651M is the Number 5 Seller
Noritz - RC-7651M - Remote Controller
2% Buy This
$95.00
In-Stock
Rinnai
Rinnai 804000074 Condensate Neutralizer Kit for Rinnai Condensing Tankless Water Heaters, Tankless Water Heater Accessory, Addition
2% Buy This
$89.00
Freight Icon
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.
In-Stock
Freight Icon
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.
Rinnai
Rinnai - 103000038 - Scale Cutter Water Conditioning System - For All Rinnai Ultra, Luxury and Value Series Tankless Water Heaters
2% Buy This
$219.00
In-Stock
Freight Icon
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.
Noritz - IK-WV-200-1-TH-LF - Threaded Isolation Valve Kit w/ Male 500K Btuh Pressure Relief Valve
2% Buy This
$85.00
In-Stock
Rinnai
Rinnai - 223181 - Universal Non-Condensing Horizontal Termination Kit - For Rinnai Luxury and Value Series Tankless Water Heaters (Except 98 series)
2% Buy This
$70.00
In-Stock
Rinnai
Rinnai Concentric Venting Condensing Vent Pipe Extension - 39", Tankless Water Heater Accessory, Addition
2% Buy This
$30.00
In-Stock
Rinnai
Rinnai - 169044 - Pipe Clamp - For All Rinnai Ultra, Luxury and Value Series Tankless Water Heaters
2% Buy This
$4.50
In-Stock
Noritz - PRC-1 - Plastic Rain Cap - For NRC83, NRC661, NRC711, NRC98, NRC1111, NCC1991 Series Units
2% Buy This
$35.00
Only 5 In-Stock
Rinnai
Rinnai - 224053 - Vent Pipe Extension - For Rinnai Luxury and Value Series Tankless Water Heaters (Except 98 series)
2% Buy This
$39.00
In-Stock
Noritz - PVT-HL - Horizontal Hood /Louvre Vent Termination - For NRC83, NRC661, NRC711, NRC98, NRC1111, NCC1991 Series Units
2% Buy This
$27.00
In-Stock
Rinnai
Rinnai - 224270 - Vent Pipe Extension - For Rinnai Luxury and Value Series Tankless Water Heaters
1% Buy This
$53.00
In-Stock
Noritz - NC-1 - Residential Condensate Neutralizer Kit (for single unit) - For NRC661, NRC83, NRC98, NRC1111, and NCC1991 units
$78.00
Freight Icon
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.
Only 2 In-Stock
Freight Icon
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.
Noritz - VT3-PVCS - Bird Screen For 3" PVC Pipe Termination - For NRC83, NRC661, NRC711, NRC98, NRC1111, NCC1991 Series Units
1% Buy This
$18.00
Only 2 In-Stock