How to protect your Hot Tub from freezing

protect a hot tub from freezing

If you lose heat to your hot tub in the cold winter months, don’t panic! For a Fully-Foamed hot tub to start to freeze the temperature needs to be below 28 degrees F for at least 36 Hours straight. Even if it does get that cold if your hot tub & pumps are still operating, the water is circulating and will not freeze.

Freeze damage to a hot tub is a costly repair, so to protect your non-heating hot tub from freezing in the winter months, follow these easy instructions put together by George Thomas our service manage, who is one of the brightest in the hot tub industry:

Protect a Hot Tub from Freezing

  1. DO NOT DRAIN THE SPA! If it has been drained refill it.
  2. Periodically run the jet pumps to circulate the water. This will add heat generated by pump motors to your water. (If your jets do not operate go to step #3)
  3. Place submersible pump in center of foot well of your spa (See image below). Plug in the pump and allow to run in the spa without a hose. This will circulate water in spa and transfer heat generated by pump motor to water. NOTE: Pump should be plastic and NOT SMALLER than 1/4 Horse Power!protect a hot tub from freezing
  4. Place a small ceramic heater or a 100 watt incandescent light bulb in the equipment area of your hot tub, making sure that the heater or bulb DOES NOT TOUCH any components or plumbing. Re-install front panel to keep heat inside. NOTE: On SUNDANCE SPAS this is to be installed behind Front Right Side Equipment door Not Center Panel.
  6. If these instructions are followed the spa will be in NO DANGER of FREEZING!

If you’re in the Philadelphia area, contact our service department to schedule a service appointment for your non-heating hot tub!

Request Hot Tub Service


©George Thomas and Spring Dance Hot tubs. May not reproduce without permission


  1. http://Allyson says

    Thank you for this helpful article! Our spa stopped working sometime over the last day- today is Sunday- and we were unsuccessful finding someone to come out. It is currently 23 degrees with an expected temperature overnight of 16 degrees. Since nothing is operating in our spa, we have placed a submersible pump in the tub, and an incandescent bulb in the equipment area. Fingers crossed that this will hold us over till a repair person is available.

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