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-Pack 2 Inch Hot Tub Heater/Pump Union Gaskets - 2.5" Lip - Balboa Gecko Compatible
HTPOFAmerica
MSRP: $8.99$6.99This product includes Two (2) Premium 2" Heater or Pump Union Gaskets featuring a lipped design with 2 1/2" center-to-center measurement. These gaskets measure 2 7/8" outer diameter, approximately 2 3/16" inner diameter, and feature a ridge with 2 1/2"...MSRP: $8.99$6.99 -
Spa Heater Union 2 1/2" Thread x 2" Slip with Matching Gasket - Hot Tub Parts
HTPOFAmerica
MSRP: $18.99$13.99This listing includes one 2 1/2" Thread X 2" Slip Heater Union complete with matching Gasket. This union connects 2" plumbing to a 2 1/2" heater flange. The slip side accepts 2" pipe or fittings for gluing (measuring approximately 2 3/8" across), while...MSRP: $18.99$13.99 -
Discontinued 2 1/2" Thread X 1 1/2" Slip Heater Union with Gasket for Hot Tub Spa
HTPOFAmerica
MSRP: $18.99$13.99This component is no longer manufactured by the original supplier.This listing is for a 2 1/2" Thread X 1 1/2" Slip Heater Union complete with matching Gasket. This union accepts a 1 1/2" pipe or fitting on the slip (glue) side and threads onto a 2 1/2"...MSRP: $18.99$13.99Qty in Cart: 0Quantity:Price:MSRP: $18.99$13.99Subtotal: -
Hot Tub Spa 1 1/2" Thread X 1" Slip Heater Union Video How To
HTPOFAmerica
MSRP: $15.99$9.99This part is a 1 1/2" Threaded X 1" Slip Heater Union with Gasket or O-Ring that matches Union. The Union recieves a 1" pipe or fitting on one side that measures 1 1/4" Outside Diameter and then Screws to a 1 1/2"...MSRP: $15.99$9.99 -
2 1/2 Inch Hot Tub Heater Union Nut Kit with Therm Gasket - Set of 2
HTPOFAmerica
MSRP: $64.99$37.99Complete 2 1/2" Heater Connection Kit - Pair IncludedThis comprehensive kit contains everything needed for professional heater tube installation: 2 complete sets, each featuring a 2 1/2" flange nut, split retainer ring, and Therm-style gasket designed...MSRP: $64.99$37.99 -
2-Pack 2-1/2" Spa Pump Union T Gaskets - 3 5/8" Thread Fit - Replacement Seals
HTPOFAmerica
MSRP: $19.99$14.99These replacement gaskets come as a pair (2 pieces) designed for 2 1/2" pump or heater unions with approximately 3 5/8" interior thread measurement. Each gasket features precise dimensions of 3 1/4" O.D. x 2 3/8" I.D. with a 2 7/8" center-to-center lip...MSRP: $19.99$14.99 -
2 1/2" Hot Tub Heater Union Nut & Retainer Kit with Installation Guide
HTPOFAmerica
MSRP: $28.99$18.99Important: Verify Measurements Before Ordering - This 2 1/2" size is uncommon and typically found only in swim spas with large 3" heaters or select smaller hot tubs. Most standard hot tubs use 2" heater unions, which are also available at Global. Please...MSRP: $28.99$18.99 -
2 1/2" Hot Tub Heater Union Nut Kit with Therm Gasket - Installation Guide
HTPOFAmerica
MSRP: $31.99$21.99Important - Verify Size Before Ordering: This 2 1/2" heater union nut is uncommon in standard hot tubs. Typically found only in swim spas with large 3" heaters or select smaller tubs. The standard 2" size fits most applications. Please confirm your...MSRP: $31.99$21.99 -
Set of 2 Gate Slice Valves 1 1/2" & 2" Heater Unions for Hot Tub Spa - Installation Video
HTPOFAmerica
MSRP: $56.99$49.99This complete set includes (2) 1 1/2" Spigot X 1 1/2" Slip Gate Slice Valves plus (2) 1 1/2 X 2" Heater Unions with Gaskets. Each valve features a 1 1/2" spigot connection that accepts pipe or fittings measuring approximately 1 7/8" OD on one end, while...MSRP: $56.99$49.99 -
1 1/2" & 2" Spa Isolation Slice Valve with Heater Union Kit - Installation Guide Video
HTPOFAmerica
MSRP: $34.99$28.99This package includes one 1 1/2" Spigot X 1 1/2" Slip Slice Gate Valve paired with a 1 1/2" X 2" Heater Union complete with matching Gasket or O-ring. The valve features a 1 1/2" pipe connection on one end and a slip fitting on the opposite end...MSRP: $34.99$28.99 -
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