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How to Fix an Air Conditioner Not Cooling

If you have noticed that your home just isn’t staying cool in the warmer months, you may have an issue with your air conditioner. There are several possible issues that can occur that would prevent your AC unit from functioning properly. There are a few simple checks you can perform that may help you identify the issue. Our guide will walk you through how to fix an air conditioner that’s not cooling.

Tools You’ll Need How to Fix an Air Conditioner Not Cooling

  • Flashlight
  • Spray bottle
  • Dish soap

Instruction for How to Fix an Air Conditioner That’s Not Cooling

If Your Air Conditioner is Not Turning On at All:

  1. Check your thermostat and make sure it is functioning properly. Many use batteries that may need to be replaced.
    1. Lower your temperature 5-10 degrees and see if that makes the unit function.
  2. Check to ensure your air conditioner is getting power from the breaker.
  3. Check for frozen lines and coils around the air conditioning unit.
  4. If everything seems to be normal, you may have an issue with your motor or compressor that a professional would have to repair or replace.

If Your Air Just Isn’t Cool Enough:

  1. Check the air filter and make sure it is not clogged with dirt. This restricts airflow and can also cause coils to freeze.
  2. Check your vents to make sure they are not closed and air is coming out.
  3. Make sure there is no dirt or debris clogging the vent/register.
  4. Check around the outdoor compressor and make sure no leaves, branches, or other obstructions surround the unit.
  5. Check to ensure the outdoor compressor fan is spinning. If not, it either has no power or the motor may be broken.
  6. Listen closely to your AC unit. If there is a leak, you may hear a hissing sound.
  7. Perform a soap solution test on the lines by spraying a solution of water and dish soap and look for bubbles.
    1. Mix 1 part dish soap and 4 parts water in a spray bottle.
    2. Soak the lines generously and wait to see if bubbles develop.
  8. If none of the above yielded results, you may need a refrigerant recharge that can only be performed by a licensed professional

Oliver Heating & Cooling Can Fix Your Air Conditioner

Some of the ways to diagnose a faulty air conditioner should only be performed by a licensed professional. If you’re trying to find out how to fix an air conditioner that’s not cooling, it’s possible that you will get to a point where you are simply unable to carry out the necessary fix, such as recharging your refrigerant. If you need professional help, don’t hesitate to contact Oliver today. We’re here for homeowners in Pennsylvania, New Jersey, and Delaware for all of your heating and cooling needs.

Need help with this project?

If you do not have the time, tools, or experience necessary to complete the project, please contact the professionals at Oliver for help.

Contact us today at 1-888-810-2681 Get a Free Estimate