Why is My Air Conditioner Blowing Warm Air?

man with AC

Summer is officially here and in full swing. With the summer heat and humidity, we have to heavily rely on the comfort of our homes to provide much needed rest from said heat. This is when we have to count on our air conditioners the most. During the busy season of summer, our team here at Palmetto Air Conditioning receives tons of calls from Lexington, SC homeowners who are concerned about their AC units blowing warm air instead of cool air. If you’ve been asking yourself the same question, Palmetto Air Conditioning wants to help.

Some of the most common reasons air conditioners blow warm air are:

  • Dirty Air Filters
  • Frozen Evaporator Coil
  • Thermostat Settings Error
  • Refrigerant Leak

Dirty Air Filters

When your cooling systems’ filter is dirty, the air conditioner cannot properly move cold air through the HVAC system. This issue strains your AC unit and can cause your cooling system to blow warm air. Be sure to check your air filter to ensure it’s clean. If it’s dirty, replace it with a new, clean air filter to see if the warm air issue resolves.

Frozen Evaporator Coil

You AC units’ evaporator coils extract heat from the home’s air to begin the cooling process. A bi-product of this cooling process is condensation which is why you need a drip pan to catch this moisture. When too much moisture collects on the evaporator coils, they may freeze. When your coils are frozen, they prevent heat transfer so you’ll feel warm air blowing from your AC unit. Frozen evaporator coils need to be inspected and repaired by a professional HVAC technician. If you suspect your evaporator coils are frozen, give the Palmetto Air Conditioning team a call today. We will have your Lexington, SC home feeling cool and comfortable again in no time.

Thermostat Errors

Sometimes, a simple mistake at your thermostat can lead to your air conditioner blowing warm air in your Lexington, SC home. If your fan is set to “ON” it will run all of time including in between cooling cycles. That means the warm air you are feeling is only blowing because your fan is set to “ON” instead of “AUTO”. Check your thermostat settings and make sure your fan is set to “AUTO” and the “COOL” setting is selected.

Refrigerant Leak

Finally, refrigerant leaks are also a reason why your air conditioner might be blowing hot air in your Lexington, SC home. When refrigerant escapes the system via a leak, the air conditioner doesn’t have the proper charge to complete its cooling cycles. Thus, the air you feel indoors is warmer than it should be. If you suspect a refrigerant leak, you need to call your local HVAC contractor ASAP.

If you’re looking for a heating and air conditioning contractor to keep you and your family cool and comfortable this summer, give the Palmetto Air Conditioning team a call today! Check out some of the air conditioners we carry and install if you’re interested in updating your cooling system. We are always happy to help our customers here in the greater Lexington, SC area.

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Palmetto Air Conditioning Company