You depend on your Irmo, SC, home’s heat pump to deliver warm air throughout the winter months of the year. If there’s no warm air blowing from your vents, there are a few things you can check before calling for professional heat pump services. Read on to learn three common reasons why your system isn’t heating your home.

Dirty Air Filter

When your heat pump isn’t heating your home, the first thing to do is to check its air filter. According to the Department of Energy, a dirty air filter impedes airflow. It can also damage the compressor. You should check the filter once a month. Pick a date that’s easy to remember, such as the first Saturday. During the peak heating season, the filter may need to be replaced every month. Don’t go longer than three months between filter changes.

Malfunctioning Thermostat

Several things can go wrong with your thermostat. When your heat pump isn’t heating, make sure the thermostat is set to the heating function. Next, check the temperature setting. If your home’s temperature is currently warmer than the temperature setting, the heat pump won’t cycle. Improper calibration of the thermostat could cause it to incorrectly sense your home’s temperature, which interferes with triggering a heating cycle. The thermostat may have lost its connection to the heat pump’s reversing valve, which also prevents it from starting the unit.

Faulty Reversing Valve

Your heat pump’s reversing valve allows it to switch from absorbing heat from your home in the summertime to bringing heat energy into your home during the wintertime. If the reversing valve fails, the unit won’t be able to cycle the warmed refrigerant into your home. Our skilled technicians can replace faulty reversing valves.

To learn more about why your heat pump isn’t delivering warm air to your home, take a look at Cassell Brothers Heating & Cooling’s heat pump repair services, or give us a call today.