Bathtub Heater – “Thermal Wrap” Heater w/ Installation Kit – fits most bathtubs

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Model: 53B-IK Heat Recovery Kit

Snap-It-On…Enjoy Free Heat!

53B-IK Kit Includes:

1-Thermal Wrap Jacket – 3 Ports

1-Single Barbed Union compete with o-ring (needed for pump without built on tubing connections) connects to pump discharge port.

1-Double Barbed Union complete with o-ring (needed for pump without built on tubing connections) connects to pump suction port.

36″ 3/8″ Tubing

6-Tubing Clamps


Thermal Wrap – Heat Transfer System – Model 53B-Kit (pump not included)

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Tub water circulates through a serpentine path in the Thermal Wrap, collecting the heat generated by the pump/motor

and recycles that heat to the tub water – were it belongs!

This patented heating system for hot tubs/spas and Whirlpool Baths, captures and recycles the waste heat “energy” produced by the pump/motor and delivers that heat to the hot tub or bath water.  The Thermal Wrap system will heat and maintain water temperature.  The system allows the motor to run cooler; increasing the motors longevity and efficiency.  There are no moving parts and nothing to wear out.  Made in the USA!


– Patented design, over 1,000,000 in use

– Special thermal conductive inner heat transfer liner

– Models available for most spa/hot tub and jetted bathtub pumps


– Maintenance free – no moving parts to wear out

– Helps keep motor cooler – increases motor longevity and efficiency

– Cost less than electric heaters

– No additional electrical circuits required for installation


– Manufactured of non-conductive materials

– Non electrical

– Self draining design (required for whirlpool bath application)

Retro-Fit Kit for your existing spa/hot tub motor. The Thermal Wrap System will compliment your electric heater by capturing the waste heat generated by your pump motor and delivering that heat to the tub water, saving you money with heating costs. The Thermal Wrap will help maintain water temperature during normal filtering and heating cycles and while using your spa in high speed jet action.

Pump for illustration purposes, not included.

Additional information

Weight 1.3 lbs
Dimensions 7 × 7 × 6 in
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