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November 16, 2015
Why Won’t My HVAC System Stop Running?
A key feature of a whole-home heating and air conditioning system is that it runs in cycles. In general, the heating and cooling systems should only have to run when the temperatures go beyond the setting on the thermostat. The blower unit kicks in to bring you back to your desired temperature, and then it shuts off once it reaches an ideal range. If your HVAC system won’t stop running, this indicates some sort of issue. But what could it be?
Check the thermostat
This might seem like an obvious step, but take a closer look to be sure the settings were not changed by accident. “Fan on” mode is a common setting that could have been tampered with by mistake. Read the owner’s manual for the thermostat if you need help or call a local technician.
Try the filter
Another possible reason for your air conditioning and heating systems constantly cycling is a lack of airflow. This is a result of poor maintenance, which may only mean you have to change the air filter. Try replacing a dirty filter, and see if this changes the performance of your system. Routine maintenance can also improve the performance of an air conditioning or heating system with tune-ups to the most important components of the system. Call a professional for more information about annual professional maintenance services in your area.
Call an Expert
When these aren’t the solutions to your heating and cooling problems, it’s best to call in an expert. There may be an issue with the limit switch of your heater or a problem with the blower fan motor. In any case, you want a professional to solve the problem for your safety, comfort, bills and the longevity of your unit.