Unions, Heater
Hot tub heater unions provide the critical connection between your heater assembly and spa plumbing. Our selection includes unions in various sizes to fit most heater configurations. A good union seal prevents leaks and makes future heater servicing quick and straightforward. We offer competitive international shipping rates to buyers worldwide.
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2" Heater Split Nut with Screws For Repairing Heater Unions
MSRP: $12.95$8.952" Heater split nut repair union used to replace cracked and brittle heater unions on hot tubs and spas. This two piece split nut fits around your heater and is held together by two phillips head...MSRP: $12.95$8.95 -
Set of 2 2 5/8" Center to Center O-Ring Hot Tub Spa 2" Pump Union ORing fits Watkins HotSpring Caldera Tiger River Hot Spot
MSRP: $15.99$8.99Independent Supplier & Replacement Part Notice We areMSRP: $15.99$8.99 -
2X Jacuzzi Premium & Sundance 2 5/8" Center to Center O-Ring Hot Tub Spa 2" Pump Union ORing
MSRP: $15.99$8.99This Kit is a Set of 2 NON-MSRP: $15.99$8.99 -
Fits Watkins Heater Union Gasket Set of (2) 2 5/8" Lip Hot Tub Spa 2" Heater Gasket with 2 5/8" Center to Center Groove
MSRP: $14.99$8.99This Part is a Set of (2) NON-MSRP: $14.99$8.99 -
Set of (4) Hot Tub Spa 2" Heater or Pump Union Gasket Combo (2) 2 1/2" Lip & (2) 2 5/8" Lip Gasket
MSRP: $31.99$14.99This Kit is a Set of (4) Total Combination of the Two Standard Size 2" Heater or Pump Union Gasket (2MSRP: $31.99$14.99 -
Plumbing Retrofit Kit for Dr Wellness & Water's Edge - ET-H3000/ET-H4000 Remote Heater Conversion
HTPOFAmerica
MSRP: $169.99$139.99Do not order this kit if you are outside of the United States. Glue cannot be shipped outside of the United States. Comprehensive plumbing conversion kit desigMSRP: $169.99$139.99 -
1-1/2" Heater Union Tailpiece Assembly - MBT x Slip w/Split Nut & Gasket
HTPOFAmerica
MSRP: $19.99$14.991-1/2" Heater Union Tailpiece Assembly - MBT x Slip w/Split Nut & GasketThis complete half union tailpiece kit provides a reliable connection solution for spa and hot tub heating systems. The...MSRP: $19.99$14.99 -
MSRP: $21.99$16.99 -
1 1/2" Slip x 2" Threaded Heater Union for Hot Tub Spa - Global
HTPOFAmerica
MSRP: $10.99$8.99Need help installing this component? Look up The Hot Tub Professor on YouTube for detailed installation guidance on 2" x 1 1/2" slip spa heater unions.MSRP: $10.99$8.99 -
2 1/2" Therm Style Union Gasket for Hot Tub Heater & Pump - 3 1/4" OD x 2 3/4" ID
HTPOFAmerica
MSRP: $9.99$7.99This component is a 2 1/2" Therm Style Union Gasket Only designed for installation with 2 1/2" heater or pump unions in your spa system.When working with 2 1/2" heaters or pumps, please verify...MSRP: $9.99$7.99 -
Hot Tub Heater Split Nut 1 1/2" with 2 3/8" Threads - Includes 2 Screws for Spa Heater Union
HTPOFAmerica
MSRP: $11.99$6.99This listing is for one 1 1/2" Heater Split Nut Assembly that comes complete with split nut and (2) mounting screws designed for 1 1/2" Heater Union applications measuring approximately 2 3/8" OD...MSRP: $11.99$6.99 -
2" Spa Pump & Heater Union Gasket - Extra Thick 1/4" Flat Seal
Waterway Plastics
MSRP: $7.99$5.99This extra thick 1/4" flat seal gasket is specifically designed for 2" pump and heater unions in hot tubs and spas. Engineered with superior thickness for enhanced durability and leak prevention,...MSRP: $7.99$5.99