Flo-Thru Heater for Cal Spas XL 5.5kW

Flo-Thru Heater for Cal Spas XL 5.5kW
Flo-Thru Heater for Cal Spas XL 5.5kW

Flo-Thru Heater for Cal Spas XL 5.5kW

Regular price $149.95
Qualifies for Free Shipping Free standard delivery to contiguous US-48 for $100+ merchandise total.
  • In stock, ready to ship
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Ships next business day.


This best quality Stainless Steel Hot Tub Heater Assembly is the efficient flow-through replacement for the Cal Spa XL Heat Exchanger. Complete with split nuts, gaskets, tailpieces, thermowell with cover, pressure tap, heater wires with connectors, and insulated metal housing box.

Our unit is designed to accommodate the reusable Thermal Cut Out switch (TCO) when needed. Refer to instructions (PDF link below).

  • 5.5kW - May be operated at 240V or 120V
  • Easily convert to 1-1/2" Slip with BX9901 reducer bushings

Product notes: Not an exchanger, but a direct replacement in-line flow thru heater manifold with element. Made to the same exacting quality standards as the original heater.

Thermal Cutout (TCO) Retrofit Information 


Length: 15” Stainless Steel Tube (not including union length)

Connection: 2” Slip (Easily Convertible to 1-1/2” Plumbing)

Voltage: 240V/120V

Wattage: 5.5kW @ 240V – 1.375kW @ 120V

Unions: (2) 2” Split Nuts, (2) Gaskets and (2) Tailpieces included

Pressure Taps: 1/8” NPT

Thermowell Housing: External w/Cover

Replacement Element: BX5000 Flow-Thru Spa Heater Element

Replaces Part Numbers: 26-0071-XL, 26-0011-7S-K, 26-2001-7s-K, B24055XL, C2550-0011, F2550-0011, F2550-0011-100, F2550-0001, HEA14100120, HEA14100121, HEA14100401, XL5.5

Warranty: 1 year Limited Warranty

Customer Reviews

Based on 12 reviews
I would buy from Spa Depot again

Installation was quick and easy. The old heater burned out.

Heater works fine for my Cal Spa 2003

Completely compatible as replacement. Easy to install

Works great last one lasted 3years

It is great to have a hot, hot tub again .

Howard M.
CalSpa replacement heater 5.5kW

Great original product replacement including the 1/8"" pressure port that did not exist on my previous replacement heater.

Flo-Thru Hot Tub Heater Assembly for Cal Spas XL- BX5952

Thank you, I really like SpaDepot and would highly recommend them, Very quick deliveries sight is very user friendly.

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