Correcting My Pool

Troubleshooting Your Hot Tub's Heater

Having access to a personal hot tub can be a great way to relax and unwind at the end of a stressful day. In order to generate the warm water that fills a hot tub, your spa needs access to a functional heater. Hot tub heaters can malfunction, and being able to identify the case of your hot tub's heater problems will allow you to address the issue in a timely manner.

Here are three potential reasons why your hot tub's heater isn't working properly:

1. The thermostat is broken.

In order to regulate the temperature of the water within your hot tub, the heater relies on signals sent from the thermostat. If the thermostat becomes damaged or broken then it will not relay the proper signals to your heater.

This signal disruption will result in the heater failing to turn on and the water in your hot tub becoming tepid. Before you invest in the costly repair or replacement of your hot tub's heater, take the time to ensure that problem doesn't actually lie with the thermostat instead.

2. The water level is too low.

Your hot tub's heater must be fully submerged in order to properly heat the water in your spa. Evaporation, splashing, and other circumstances can lead to a loss of water within your hot tub. When water levels drop below the level set by the pressure switch on your heater, the heater will automatically shut off to prevent serious and permanent damage.

If your heater isn't kicking on when it should, check to ensure that there is enough water in your hot tub to keep the pressure switch actively engaged.

3. The high limit temperature is set too low.

Most hot tub heaters are equipped with a special sensor known as the high limit. This sensor is designed to prevent the heater from generating too much heat and causing the temperature in the hot tub to rise dangerously high.

Once the water reaches the high limit temperature setting, the heater will automatically turn off. If your high limit is set too low, then your heater may not be able to adequately heat the water in your hot tub. Check the high limit temperature and increase it if necessary to restore functionality to your hot tub's heater.

Ensuring that your hot tub's heater is working properly will help guarantee the water in your hot tub remains warm and comfortable. Troubleshoot a malfunctioning heater by checking the thermostat, water levels, and high limit temperature. Check out a website like for more information and assistance.