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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2" Heater Split Nut & Union Kit Set of 2 - Hot Tub Spa Parts with Gaskets & Hardware
HTPOFAmerica
MSRP: $39.98$29.99This complete kit includes everything needed for TWO 2" Heater Connections: (2) split nuts, (4) mounting screws, (2) 2" Slip X 2" Thread unions, and (2) gaskets designed specifically for 2" heater installations. Each split nut attaches directly to your...MSRP: $39.98$29.99 -
2" Heater Union Complete Assembly Kit - Split Nut, Slip Thread Union & Gasket
HTPOFAmerica
MSRP: $19.99$16.99This complete assembly includes everything needed: 2" Split Nut for Heater Flange, 2" Slip X 2" Thread Union, matching gasket, and (2) mounting screws. The split nut fastens directly to your heater tube via the included screws, creating a secure mount...MSRP: $19.99$16.99 -
Standard 2 1/2" Pump Union O-Ring - Hot Tub Spa Replacement Seal
HTPOFAmerica
MSRP: $7.99$5.99This replacement seal is a Standard 2 1/2" Pump Union O-Ring designed for spa plumbing connections. Measuring 2 1/2" Center to Center in diameter, this o-ring provides a watertight seal for most pump unions, though compatibility varies by model—please...MSRP: $7.99$5.99 -
Flow-Through Heater Assembly for Cal Spas 1990-1992 | 5.5kW 230V | 15-3/4" x 1-1/2" Stainless Steel Generic
Therm Products
MSRP: $204.97$159.42Compatible with Cal Spas 1990-1992 ModelsGeneric stainless steel flow-through heater assembly featuring 1-1/2" x 15-3/4" manifold configuration. Complete unit includes 5.5kW/240v heating element and split nuts with tailpieces. Design does not include...MSRP: $204.97$159.42 -
_LG__86529__10631.1630827327.jpg?c=2 "Pump Union, 2\"s x 2\"fbt, 90 degree Sweep")
MSRP: $17.77$13.82 -
5.5kW Screwplug Heater Element 1" Thread 15-1/4" 230v CalSpa Coates Compatible
Generic
MSRP: $139.99$109.99Replacement Screwplug Heating Element - 1" Male Pipe Thread with Screw-On Terminal DesignThis 5.5kW/240v rated heating element features a 1" male pipe thread connection measuring 1-1/4" outer diameter. Designed for CalSpa, Ramco, and Coates heater...MSRP: $139.99$109.99 -
Arctic Spas 5.5kW 230v L-Shaped Flow Thru Heater 12" x 2" Aftermarket Replacement
HTPOFAmerica
MSRP: $330.20$249.99Aftermarket Flow Thru Heater for Arctic SpasThis stainless steel L-shaped flow through heater assembly features a 5.5kW/230v incoloy heating element designed as an aftermarket replacement for Arctic Spas hot tubs. Complete package includes heater gaskets...MSRP: $330.20$249.99 -
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 accepts a 2 1/2" pipe or fitting for gluing, while the threaded side connects to a 2 1/2" Heater Flange using the included 2 1/2"...MSRP: $38.99$29.99 -
MSRP: $21.03$16.36 -
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 male buttress threaded end spans approximately 3 5/8"...MSRP: $29.99$19.99 -
Balboa M7 Flow Through Heater Assembly 5.5kW 15x2 Inch 115v/230v with Sensor - LE & Value Systems
HTPOFAmerica
MSRP: $279.99$179.99Complete stainless steel flow-through heater assembly designed for Balboa Water Group control systems. This dual-voltage unit operates at 5.5kW/1.375kW on 115v or 230v power. The housing features a 2-inch inside diameter with an overall tube length of 15...MSRP: $279.99$179.99 -
Leisure Bay Heat Exchanger 17-1/2" x 3" 230v 4.0kW Stainless Steel Heater Assembly (Also Known as 2-1/2")
HTPOFAmerica
MSRP: $399.99$339.99Genuine replacement heat exchanger designed exclusively for Leisure Bay spa systems. This stainless steel heating assembly measures 17-1/2" x 3" and operates at 4.0kW/230v, delivering reliable performance for your hot tub.This heat exchanger features a...MSRP: $399.99$339.99