You turn on your air conditioner and stick your face in front of it, anticipating that icy cool blast of refreshing air. Instead, you feel a stream of warm air like a giant’s fetid breath on your face. Is anything worse?
There are a few reasons why your air conditioning unit may not be working properly. Here, we answer your most important questions about malfunctioning air conditioning units. Why does my AC blow warm air? And how can I fix my air conditioning unit?
Why Does My AC Blow Warm Air?
To understand why your air conditioner is blowing warm air, you need to know how the air conditioning unit functions.
An air conditioner uses refrigerant to cool the warm air in your home by converting it from a liquid to a gas. The refrigerant absorbs the heat of the air as it changes. Then, a compressor pressurizes the gas, creating more heat. The heat is pushed outdoors via the condenser coils, and the gas changes back to a liquid. Refrigerant is at the heart of the air conditioning process. A problem with the refrigerant could be the reason why your AC is blowing warm air.
YOUR REFRIGERANT IS LOW
Refrigerant cools the air in your AC unit. If it’s low, air will still circulate through your unit but it won’t cool as it converts from a gas to a liquid. It will simply stay the same temperature as it circulates through the system. You might need a refill of your refrigerant, or it might be leaking somewhere.
YOUR AIR CONDITIONER COILS ARE FROZEN
If you aren’t keeping the coils clean through AC unit maintenance or you aren’t changing the air filter regularly, the coils can freeze. The dirt and debris prevents airflow over the evaporator so the cool air can’t escape. Unfreezing or deicing your AC unit isn’t a DIY job. Only qualified experts should handle refrigerant. If your air conditioning unit is freezing up, it could be causing it to blow warm air. Call the professionals to diagnose and fix your problem.
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