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 1/2" Heater Union Tailpiece w/ Gasket - 90° 1" Barb x 2.5" MBT - Blue Ridge, Gatsby Compatible
HTPOFAmerica
MSRP: $38.99$25.99This replacement heater union tailpiece includes a gasket and features a 90 degree angled design with dual connections. Engineered to fit heater tubes measuring approximately 3 inches inside diameter, this component ensures secure plumbing connections...MSRP: $38.99$25.99 -
2 1/2" Threaded x 1" Barb 90° Heater Union for Hot Tub Spa
HTPOFAmerica
MSRP: $24.99$18.99This component is a 2 1/2" Threaded x 1" Barb 90 Degree Heater Union designed for spa heating systems.The fitting connects a 1" ID pipe on the barbed end and fastens to a 2 1/2" Heater Flange with a 2 1/2" Nut on the threaded side.Compatible with heater...MSRP: $24.99$18.99 -
Heater Tailpiece with Split Nut - 2" Male Buttress x 1-1/2"/2" Slip/Spigot
HTPOFAmerica
MSRP: $19.99$14.99Heater Tailpiece with Split Nut - 2" Male Buttress x 1-1/2"/2" Slip/Spigot This heater union tailpiece with split nut provides a secure connection for your spa heating system. Engineered for durability and reliable performance in hot tub applications...MSRP: $19.99$14.99 -
2" Pump Union O-Ring 2 5/8" Center to Center - Jacuzzi Premium & Sundance Spa Parts
HTPOFAmerica
MSRP: $7.99$4.99IMPORTANT: This is a NON-STANDARD 2 5/8" Center to Center replacement o-ring for 2" pump or heater unions.This seal measures 2 5/8" from center to center. Please note that standard unions typically use 2 1/2" center to center o-rings. You must confirm...MSRP: $7.99$4.99 -
1 1/2" Spa Pump Union O-Ring Seal - 2" Center to Center Measurement for Hot Tubs
HTPOFAmerica
MSRP: $7.99$5.99Replacement O-Ring seal designed for 1 1/2" pump unions with a 2" groove configuration, measuring 2" from center to center. This seal ring works with Magic Plastics 2" pump unions, though certain models may require alternative sizes such as 2 1/8" or 1...MSRP: $7.99$5.99 -
2" Thread Water Union Gasket Only Saluspa Lay-Z-Spa™ "A" Coupling for Water
HTPOFAmerica
MSRP: $19.99$14.99This component serves as a replacement "A" Coupling Gasket "Only" designed for various Saluspa or Lay-Z-Spa AirJet™ Hot Tub models (including Siena, Miami, Havana, Paris, Palm Springs Air Jet, New York, Vegas, Saint Tropez, Hawaii and Monaco).When the...MSRP: $19.99$14.99 -
2" Threaded Split Nut Assembly with Gasket - Saluspa Lay-Z-Spa "A" Water Union Coupling Kit
HTPOFAmerica
MSRP: $37.99$32.99This replacement "A" Coupling component serves as the water connection fitting for various Saluspa and Lay-Z-Spa AirJet™ Hot Tub models, including Siena, Miami, Havana, Paris, Palm Springs Air Jet, New York, Vegas, Saint Tropez, Hawaii, and Monaco.When...MSRP: $37.99$32.99 -
2 5/8" Center O-Ring for Watkins HotSpring Caldera Tiger River Hot Spot 2" Pump Union
HTPOFAmerica
MSRP: $7.99$4.99IMPORTANT: This is a NON-STANDARD 2" Union O-RingThis replacement O-Ring measures 2 5/8" center to center and is designed specifically for select pump and heater unions on Watkins, HotSpring, Caldera, Tiger River, and Hot Spot spa models.Critical Sizing...MSRP: $7.99$4.99 -
1-1/2" Flex Pipe & Coupler Repair Kit for Spa Manifolds, Unions & Slice Valves
HTPOFAmerica
MSRP: $14.99$9.99This professional plumbing repair kit includes a 1 1/2" coupler paired with a 6" section of 1 1/2" flexible pipe designed for seamlessly connecting new plumbing components to existing spa plumbing lines. The installation method involves threading the...MSRP: $14.99$9.99