Spa Parts Made Simple

Pumps, heaters, control boards, and replacement parts — without the confusion.

Shop by Category

Spa Pumps and Parts Spa Manifold Kits Heaters and Related Parts Pump Unions and Related Parts Most Popular Filters Diverter Valves & Parts

✔️ Real OEM & compatible spa parts

✔️ Fast shipping from the USA

✔️ Knowledgeable support when you need it

✔️ Trusted by spa owners since 2015

Not sure which part fits your spa?

We make it easy to find the right replacement part — without guessing.

Find your spa model
Match the part number
Order with confidence

Get Help Finding a Part

SpaShopper makes it easy to find quality hot tub and spa replacement parts without the frustration. From spa pumps and heaters to control boards, jets, filters, and plumbing components, we stock parts that fit a wide range of popular spa brands. Whether you’re fixing a heating issue, replacing a worn pump, or upgrading aging components, SpaShopper helps you get your spa running again quickly and confidently.

Heater Assemblies, Flow Thru

Shop By Price

Reset The filter has been reset

Compare Add to Cart The item has been added

SpaShopper

Gecko S-Class Flo Thru Heater Assembly, 15", 5.5 KW, 2"

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $269.95

Was:

Now: $218.95
Compare Add to Cart The item has been added

HydroQuip 5.5KW Flo-Thru Heater Assembly, 15", 2" unions

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $156.34

Now: $135.95
Compare Add to Cart The item has been added

Cal Spa 5.5 KW Replacement Heater Assembly, 16.25", HEA14100070

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $277.28

Now: $231.95
Compare Add to Cart The item has been added

Spa Builders 5.5 KW Flo-Thru Heater Assy, 15", C2550-0056ET

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $175.32

Now: $156.95
Compare Add to Cart The item has been added

Sundance

Spa Builders 5.5 KW Flow Thru Heater Assembly 15"

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $279.95

Was:

Now: $199.95
Compare Add to Cart The item has been added

CorrectTech 4.0 KW Flo Thru Heater, 12.63", C2400-2300ET

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $234.40

Now: $195.95
Compare Add to Cart The item has been added

Sundance

Spa Builders 4.0 KW Flo-Thru Heater Assy, 12" , C2400-1002

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $234.40

Now: $195.95
Compare Add to Cart The item has been added

SpaShopper

Gecko S-Class Flo Thru Heater Assembly, 4.0 KW, 15"

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $269.95

Was:

Now: $218.95
Compare Add to Cart The item has been added

Gecko 4KW Flow Thru Heater Replacement 2" X 15", C2400-0601ET

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $234.40

Now: $195.95
Compare Add to Cart The item has been added

Brett Aqualine 4.0 KW Flo-Thru Heater Assembly, 15"

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $211.99

Now: $176.95
Compare Add to Cart The item has been added

Leisure Bay Spas Flo-Thru Heater - 4.0 KW, 5" Pigtails

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $306.24

Now: $255.95
Compare Add to Cart The item has been added

Vita Spa 3.0 KW Generic Flo-Thru Heater, 15", C2300-0024ET

MSRP:

Was:

Now: (Inc. Tax)

MSRP:

Was: $217.03

Now: $189.95