Furnace Keeps Running After Temp Reached

Is your furnace running and running even after it has reached the desired temperature? This issue is common, but it can be frustrating if you don’t know how to resolve it. Comfort Zone HVAC is here to help you troubleshoot and identify the source of the problem so that you can get back to comfortable indoor temps quickly. Let’s take a look at what could be causing your furnace to keep running.

Common Causes for a Furnace That Keeps Running

The first thing to check when your furnace is continuously running is the thermostat. It may be set to “on” instead of “auto,” which means that the fan will run continuously regardless of whether or not heat is needed. Additionally, check if there are any problems with the limit switch, as this switch helps regulate when the furnace fan should stop blowing. If this switch isn't working correctly, it could cause your furnace fan to keep running even after the desired temperature has been reached.

Another possible cause could be an obstructed air filter. If airflow is blocked because of dust and debris buildup in your air filter, it could cause too much heat to stay in the system and prevent it from turning off after reaching its set temperature. To avoid this issue, make sure you regularly replace your air filters according to manufacturer recommendations—typically every 1-3 months depending on usage.

Furnaces that keep running can certainly be annoying, but identifying the source of the problem doesn't have to be! With Comfort Zone HVAC on your side, you can easily troubleshoot and fix any issues with your furnace so that you can get back to comfortable indoor temperatures quickly and easily. If you need help diagnosing a problem with your furnace or would like professional assistance with maintenance or repairs, please reach out for quality service today!