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Why Is My AC Running but Not Blowing Cold Air?

March 17, 2020 | Blog

If your AC is blowing lukewarm or hot air, chances are you’re uncomfortable, confused and annoyed. The most important solution to this is to find the source of the problem. But first, here are some reasons your AC may be running but not blowing cold air.

Dirty Air Filter

A common reason for ACs blowing warm air is a dirty air filter filled with dust and dirt. This prevents the air flow and circulation needed to produce your desired temperature, making your AC work harder for it to cool off your home. The evaporator coils are what cool the air, but when your filter is clogged, they will literally freeze and cease working – further restricting air flow.

To fix this, clean or replace your air filter as needed. To clean the evaporator coils, use soap and a soft brush to rub off the ice and dirt that has formed.

Fan or Fan Motor

Warm air may be due to your fan or fan motor not properly functioning. If your fan is running too slow or not at all, this does not allow for air flow and results in a hot and muggy temperature. Without air flow, the evaporator coils will freeze or form ice, as well, repeating what happens when an air filter is clogged.

To solve a fan or fan motor problem, check to see if the blades are damaged or in place. If they are damaged, it’s time to call for a professional AC repair company to take a look at your fan.

Control Board

If you have inspected your filter, evaporator coils and your fan motor and they all seem to be working properly, then it may be a problem with your electronic control board, or PCP. This monitors the incoming temperature with a compressor that turns off or on according to the desired temperature. If it is not working properly, then the connection to your compressor will not send any power. This makes temperature regulation harder. Take advantage of having your control board checked before further damage or corrosion takes place in the future.

If you are in need of an inspection, call Go Green Heating and AC today for a trusted Austin AC repair company to take care of your home.

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