Does the Cold Affect the Hot Tub Pump?

Freeze Protection

• Regular maintenance enables you to safely continue using your hot tub during the cold months without damaging the pump. Activate the freeze protection system before the cold weather sets in. Set the timer on the hot tub to turn on and off if you do not have a freeze protection system. The Spa Depot suggests setting the timer cycle for every 15 minutes to keep the hot tub's pump from freezing. Maintain a constant water temperature during the cold months to conserve energy and prevent the hot tub from cooling. Avoid using the hot tub's air jets during the winter because they inject cold air into the water.

Water Level and Temperature

• If your hot tub's water level dips too low, the pump does not function properly and ultimately shuts down. Once it shuts down, it becomes susceptible to the cold and may freeze. Monitor the hot tub's water daily to make sure the heater works. If the heater shuts off, the water freezes and the pump suffers damage. Thermometers with alarms are available that alert you if the water dips below a certain temperature.

Winterizing

• If you don't use the hot tub in the winter, drain it completely. Some hot tubs have air blowers that further remove water from the system. Open all outlets in the pump to allow every bit of water to drain. Some pumps have drain plugs. Use a shop vacuum to blow out the water in the pump and the hot tub's jets. If you have a wood hot tub, consider leaving a couple of inches of water in the bottom of the tub to prevent wood damage. If the hot tub is not made of wood, mop up all the water in the basin.

Emergency Plan

• If you use the hot tub during the winter months, prepare an emergency plan in case the power stops, so the pump does not freeze. If the power is estimated to be out only an hour or so, keep the cover on the hot tub so it remains warm. Drain the water if the power is going to be out for hours. A generator can also keep your hot tub working properly to protect the pump from damage.