Why Is My Air Conditioner Not Cooling?

Now that spring has arrived, temperatures are quickly climbing here in Georgia. Is your air conditioner running, but not cooling your home? If your A/C is blowing warm air, this blog post explains several potential causes.

Failing Compressor

Your air conditioner’s compressor circulates refrigerant between the indoor and outdoor components. If the compressor is damaged, your air conditioner cannot cool your home. Compressors are expensive to replace. It may be more cost-effective to replace the outside unit.

Low Refrigerant

Refrigerant absorbs heat from the air in your home. Without enough refrigerant, your air conditioner will not be able to absorb enough heat to keep your home cool. Low refrigerant indicates a leak, and you will need help from an HVAC technician to repair it.

The signs of a refrigerant leak include:

  • A hissing or bubbling sound
  • Ice buildup on the outdoor unit and the refrigerant line
  • If your air conditioner doesn’t cool on very hot days but works at night or on cooler days

Dirty Condenser Unit

The indoor unit of your air conditioner (the evaporator) absorbs heat and transfers it to the outdoor unit, called the condenser. If the condenser is dirty, it cannot dissipate the heat properly. Make sure your condenser is clean and free of debris. Trim back any nearby bushes or tree branches to give the condenser enough breathing space.

Clogged Air Filter

Dirty air filters can become clogged and block airflow. Your air conditioner may not be able to cool your home to the desired temperature. Make sure to change your air filters regularly. This is also important for your indoor air quality.

Thermostat Set to “On”

Does your A/C sometimes blow cool air, and sometimes blow hot air? If so, there’s an easy fix: Check your fan settings. If your thermostat’s fan is set to “On” instead of “Auto,” the air conditioner will blow even if the air isn’t being cooled. Set your fan to “Auto.”

For more assistance with your air conditioner, contact our team today.

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