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 Union Complete Assembly Kit - Split Nut, Slip Thread Union & Gasket
HTPOFAmerica
MSRP: $21.99$16.99This complete assembly includes everything needed: 2" Split Nut for Heater Flange, 2" Slip X 2" Thread Union, matching gasket, and (2) mounting screwsMSRP: $21.99$16.99 -
Standard 2 1/2" Pump Union O-Ring - Hot Tub Spa Replacement Seal
HTPOFAmerica
MSRP: $8.99$5.99This replacement seal is a Standard 2 1/2" Pump Union O-Ring designed for spa plumbiMSRP: $8.99$5.99 -
MSRP: $17.77$13.82 -
2 1/2" Slip x 2 1/2" Thread Spa Heater Union with Gasket - Hot Tub Plumbing Fitting
HTPOFAmerica
MSRP: $38.99$29.99This listing is for a 2 1/2" Threaded X 2 1/2" Slip Heater Union with Gasket designed for spa heating systems. The slip side aMSRP: $38.99$29.99 -
Heater Tailpiece 2 1/2" Male Buttress Thread x 2" Slip Connection
HTPOFAmerica
MSRP: $29.99$19.99This heater tailpiece features dual connection options: 2 1/2" male buttress thread on one end and 2" slip fitting on the other, designed for spa and hot tub heating systems.Precise measurements: The...MSRP: $29.99$19.99 -
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...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.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...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" pumpMSRP: $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"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...MSRP: $19.99$14.99 -
2" Threaded Split Nut Assembly with Gasket - Saluspa Lay-Z-Spa "A" Water Union Coupling Kit
HTPOFAmerica
MSRP: $42.99$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,...MSRP: $42.99$32.99