Heaters and Related Parts
Keep your hot tub or spa at the perfect temperature with our comprehensive selection of heaters and heating components. We carry complete heater assemblies, heating elements, heater manifolds, and related parts from top spa manufacturers. Whether you need a full heater replacement or just a component, we have you covered. We offer competitive international shipping rates to buyers worldwide.
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Pair of 1 1/2" Gate Slice Valves with Heater Unions for Hot Tub Spa - 115V Systems
HTPOFAmerica
MSRP: $57.99$48.99This complete kit includes two 1 1/2" Spigot X 1 1/2" Slip Gate Slice Valves paired with two 1 1/2" Heater Unions, complete with matching Gaskets or O-rings for each union. Each valve accepts a 1 1/2" pipe or fitting on the spigot end while the slip side...MSRP: $57.99$48.99 -
1 1/2" Slice Gate Valve with Heater Union Kit - Spigot x Slip - Hot Tub Spa Service Valve
HTPOFAmerica
MSRP: $34.99$28.99This component features a 1 1/2" Spigot X 1 1/2" Slip Slice Gate Valve paired with a 1 1/2" Heater Union complete with matching Gasket or O-Ring. The valve accepts a 1 1/2" pipe or fitting on the spigot end while the slip side fits inside a 1 1/2"...MSRP: $34.99$28.99 -
2" Heater Union & Slice Gate Valve Kit - Set of 2 with Gaskets
HTPOFAmerica
MSRP: $64.99$56.99This complete kit includes (2) 2" Slice Gate Valves featuring 2" Spigot X 2" Slip connections, plus (2) 2" Heater Unions with matching Gaskets or O-rings. Each valve accepts a 2" pipe or fitting on the spigot end while the slip side inserts into a 2"...MSRP: $64.99$56.99 -
2" Heater Union & 2" Slice Gate Valve Kit for Hot Tub Spa - Complete Assembly with Gasket/O-ring
HTPOFAmerica
MSRP: $37.99$30.99This complete kit includes a 2" Spigot X 2" Slip Slice Gate Valve paired with a 2" Heater Union featuring a matching Gasket or O-ring. The valve design accepts a 2" pipe or fitting on the spigot end while the slip side inserts into a 2" fitting. Assembly...MSRP: $37.99$30.99 -
(2X) 1 1/2" Slip x 1 1/2" Threaded Heater Union Set with Gaskets - Video Instructions Included
HTPOFAmerica
MSRP: $25.99$18.49This is a Pair of 1 1/2" Slip (measuring approximately 1 7/8") X 1 1/2" Threaded Side (measuring approximately 2 3/8" OD) Heater Unions Complete with Gaskets. Each union accepts a 1 1/2" pipe or fitting on the slip end while threading onto a 1 1/2"...MSRP: $25.99$18.49 -
1 1/2" Slip x 1 1/2" Threaded Spa Heater Union with Gasket - Standard Hot Tub Fitting
HTPOFAmerica
MSRP: $15.99$9.99This premium heater union features a 1 1/2" Threaded connection measuring approximately 2 3/8" OD paired with a 1 1/2" Slip connection measuring approximately 1 7/8" ID, complete with gasket included. The slip side accommodates a 1 1/2" pipe or fitting...MSRP: $15.99$9.99 -
Pair of 2" Threaded to 1.5" Slip Heater Unions with Gaskets - Adapter Set
HTPOFAmerica
MSRP: $31.99$24.99This component package includes Two (2) Heater Unions with Gaskets - 1 1/2" Slip Side (approximately 2 3/8" ID) X 2" Threaded Side (approximately 3" OD). Each union accepts a 1 1/2" pipe or fitting on the slip end and connects via threading to a 2"...MSRP: $31.99$24.99 -
2" X 1 1/2" Slip Heater Union with Gasket - Installation Guide Video
HTPOFAmerica
MSRP: $15.99$9.99Global offers this adapter-style 1 1/2" Slip (approximately 1 7/8" ID) X 2" (approximately 3" OD on threads) Heater Union complete with Gasket. This union fitting accepts a 1 1/2" pipe or fitting on the slip end while threading onto a 2" Heater Flange...MSRP: $15.99$9.99 -
Set of 2 - 2 Inch Slip x 2 Inch Heater Union with Gaskets | Spa Plumbing Fittings
HTPOFAmerica
$17.99You receive a complete pair of 2 inch Slip connections measuring approximately 2 3/8 inch ID x 2 inch Heater Union connections measuring approximately 3 inch OD, gaskets included. Each union accepts a 2 inch pipe or fitting on the slip end while...$17.99 -
2" Heater Union 2" Slip with Gasket - Spa Heater Connection Fitting
HTPOFAmerica
MSRP: $15.99$9.99This product is a 2" Slip measuring approximately 2 3/8" ID X 2" measuring approximately 3" OD Heater Union with Gasket. This union accepts a 2" pipe or fitting on one end measuring approximately 2 3/8" Outside Diameter and threads onto a 2" Heater...MSRP: $15.99$9.99 -
2-Pack 2" Heater Union Split Nut Kit with Gaskets & Screws - Hot Tub Spa Parts
HTPOFAmerica
MSRP: $21.99$14.99Complete hardware kit containing (2) 2" split nuts with approximately 3" inside diameter, (4) mounting screws, and (2) gaskets designed for connecting 2" heater tubes to heater unions. Each flange-style split nut attaches directly to your heater tube...MSRP: $21.99$14.99 -
2" Heater Union Split Nut Assembly Kit with Gasket (3" ID) - Includes Screws
HTPOFAmerica
MSRP: $12.99$8.99This complete heater connection kit features a 2" heater flange split nut with approximately 3" inner diameter, accompanied by a gasket and (2) mounting screws designed for 2" heater unions that measure roughly 3" edge to edge on the threaded portion...MSRP: $12.99$8.99