Heater Accessories

Shop By Style
Learn More About Watts Radiant ZB-N-9acw-sale-badge
Watts Radiant HydroNex - 9 Circuits - Zone Basic Panel
Write A Review
Watts Radiant - ZB-N-9 - 9 Circuits - Zone Basic Panel
Item#: 25490
Model#: ZB-N-9
Brand: Watts Radiant
$1,616.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Free Lift Gate
Learn More
Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Factory-Direct
Watts Radiant HydroNex - 9 Circuits - Zone Basic Panel
Learn More About Watts Radiant DK7000acw-sale-badge
Watts Radiant M-Series - 1" - Accessories Kit - 3/4" Sweat
Write A Review
Watts Radiant - DK7000 - 1" Accessories Kit - 3/4" Sweat - Order Number: 81005355
Item#: 25502
Model#: DK7000
Brand: Watts Radiant
$272.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 1" - Accessories Kit - 3/4" Sweat
Learn More About Watts Radiant D3804000SSacw-sale-badge
Watts Radiant M-Series - 1" - Add-A-Zone Set
Write A Review
Watts Radiant - D3804000SS - 1" Add-A-Zone Set - Order Number: 81002934
Item#: 25503
Model#: D3804000SS
Brand: Watts Radiant
$643.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 1" - Add-A-Zone Set
Learn More About Watts Radiant D665161acw-sale-badge
Watts Radiant M-Series - 1" - Pressure Test Kit
Write A Review
Watts Radiant - D665161 - 1" Pressure Test Kit - Order Number: 81001996
Item#: 25516
Model#: D665161
Brand: Watts Radiant
$521.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 1" - Pressure Test Kit
Learn More About Watts Radiant D3803010SS-KITacw-sale-badge
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803010SS-KIT - 10-Port 1" Stainless Steel Manifold - With Trunk Isolation Kit - 3/4" BSP Ports - Order Number: 81013287
Item#: 25522
Model#: D3803010SS-KIT
Brand: Watts Radiant
$3,119.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803010SSacw-sale-badge
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803010SS - 10-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81001986
Item#: 25523
Model#: D3803010SS
Brand: Watts Radiant
$2,535.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3807610SSacw-sale-badge
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3807610SS - 10-Port 1-1/2" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81005359
Item#: 25524
Model#: D3807610SS
Brand: Watts Radiant
$3,149.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 10-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D665261acw-sale-badge
Watts Radiant M-Series - 1-1/2" - Pressure Test Kit
Write A Review
Watts Radiant - D665261 - 1-1/2" Pressure Test Kit - Order Number: 81005373
Item#: 25534
Model#: D665261
Brand: Watts Radiant
$238.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 1-1/2" - Pressure Test Kit
Learn More About Watts Radiant D3803011SS-KITacw-sale-badge
Watts Radiant M-Series - 11-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803011SS-KIT - 11-Port 1" Stainless Steel Manifold - With Trunk Isolation Kit - 3/4" BSP Ports - Order Number: 81013288
Item#: 25539
Model#: D3803011SS-KIT
Brand: Watts Radiant
$3,346.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 11-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803011SSacw-sale-badge
Watts Radiant M-Series - 11-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803011SS - 11-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81003688
Item#: 25540
Model#: D3803011SS
Brand: Watts Radiant
$2,762.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 11-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803012SSacw-sale-badge
Watts Radiant M-Series - 12-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803012SS - 12-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81001987
Item#: 25542
Model#: D3803012SS
Brand: Watts Radiant
$2,998.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 12-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3807612SSacw-sale-badge
Watts Radiant M-Series - 12-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3807612SS - 12-Port 1-1/2" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81005360
Item#: 25543
Model#: D3807612SS
Brand: Watts Radiant
$3,720.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 12-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803002SS-KITacw-sale-badge
Watts Radiant M-Series - 2-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803002SS-KIT - 2-Port 1" Stainless Steel Manifold - With Trunk Isolation Kit - 3/4" BSP Ports - Order Number: 81013279
Item#: 25544
Model#: D3803002SS-KIT
Brand: Watts Radiant
$534.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 2-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803002SSacw-sale-badge
Watts Radiant M-Series - 2-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803002SS - 2-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81001981
Item#: 25545
Model#: D3803002SS
Brand: Watts Radiant
$792.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 2-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803003SSacw-sale-badge
Watts Radiant M-Series - 3-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803003SS - 3-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81001982
Item#: 25549
Model#: D3803003SS
Brand: Watts Radiant
$1,003.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 3-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803004SS-KITacw-sale-badge
Watts Radiant M-Series - 4-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803004SS-KIT - 4-Port 1" Stainless Steel Manifold - With Trunk Isolation Kit - 3/4" BSP Ports - Order Number: 81013281
Item#: 25550
Model#: D3803004SS-KIT
Brand: Watts Radiant
$696.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 4-Port - Stainless Steel Manifold - Complete Kit - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803004SSacw-sale-badge
Watts Radiant M-Series - 4-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803004SS - 4-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81001983
Item#: 25551
Model#: D3803004SS
Brand: Watts Radiant
$1,212.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 4-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3807605SSacw-sale-badge
Watts Radiant M-Series - 5-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3807605SS - 5-Port 1-1/2" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81005356
Item#: 25555
Model#: D3807605SS
Brand: Watts Radiant
$1,846.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 5-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3807606SSacw-sale-badge
Watts Radiant M-Series - 6-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3807606SS - 6-Port 1-1/2" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81005357
Item#: 25558
Model#: D3807606SS
Brand: Watts Radiant
$2,112.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 6-Port - Stainless Steel Manifold - Trunk Only - 1-1/2" Trunk - 3/4" BSP Ports
Learn More About Watts Radiant D3803007SSacw-sale-badge
Watts Radiant M-Series - 7-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports
Write A Review
Watts Radiant - D3803007SS - 7-Port 1" Stainless Steel Manifold - Trunk Only - 3/4" BSP Ports - Order Number: 81003682
Item#: 25560
Model#: D3803007SS
Brand: Watts Radiant
$1,893.00
Free Shipping
Learn More
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 map apply, see our full shipping policy for more details.
Factory-Direct
Watts Radiant M-Series - 7-Port - Stainless Steel Manifold - Trunk Only - 1" Trunk - 3/4" BSP Ports