AC Not Cooling: Here’s How To Troubleshoot

Summer is right around the corner, and nothing is worse than having an air conditioning system that fails to keep you cool. When the hot weather hits, the last thing you want is an AC blowing warm air. Not only is this uncomfortable, but it can also be a sign of more significant underlying issues. Don’t worry, though. Anthony’s AC and Heating, the leading HVAC service provider specializing in AC installation in Grand Prairie, TX, has a team of expert technicians here to guide you through the most common reasons why your AC is not cooling and how to troubleshoot them.

Dirty Air Filters: “When in Doubt, Clean it Out!”

The air filters in your AC unit play an essential role in keeping the air clean and flowing. When the filters become dirty or clogged, they restrict airflow and can cause your AC unit to work harder than it needs to. To troubleshoot this issue, you can simply clean or replace your air filters. Cleaning your filters can be done with a vacuum or soap and water. Make sure to clean or replace your air filters at least once every three months, or more often if you keep pets or have respiratory issues, to avoid this issue in the future.

Thermostat Malfunction

Another reason your AC is not cooling could be a faulty thermostat. If the thermostat is not calibrated correctly or is malfunctioning, it can cause your AC unit to run inefficiently, leading to warm indoor temperatures. To troubleshoot this issue, check if the thermostat is set to the correct temperature and cooling mode. Try replacing the batteries, and if it’s still not working, consider replacing the thermostat or calling a professional to inspect and repair or replace it. Search for “air conditioner replacement near me” and contact your reliable HVAC contractor for a seamless and efficient service.

Refrigerant Leaks

Refrigerant is an essential component of your AC unit, responsible for cooling the air circulating through your home. However, refrigerant leaks can cause your AC unit to lose cooling power and become less efficient. Signs of refrigerant leaks include hissing sounds or ice buildup on the unit’s coils. Refrigerant leaks can be dangerous, so it’s crucial to have a professional handle this type of repair.

Dirty Evaporator Coils

The evaporator coils in your AC unit absorb heat and moisture from the air, allowing cool air to be blown back into your home. However, if the coils are dirty or covered in debris, they can become frozen, leading to a decrease in cooling capacity. Signs of dirty evaporator coils include ice buildup on the unit’s coils or reduced airflow. To troubleshoot this issue, turn off your AC unit and clean the evaporator coils with a soft brush or a specialized coil cleaner.

Electrical Issues

Electrical issues can cause your AC unit to not cool properly. If your air conditioner is not receiving power, it will not be able to efficiently cool your home. To troubleshoot this issue, check your circuit breaker to make sure it hasn’t tripped. You can also check your AC unit’s power supply and ensure it is appropriately connected. However, if the electric issue is severe, it’s always better to let our professional handle it.

Fan Malfunction

The fan in your AC unit is responsible for circulating air throughout your home. However, if the fan is not working correctly, it can cause warm air to remain stagnant, leading to an inefficient cooling system. Signs of a malfunctioning fan include unusual noises or reduced airflow. To troubleshoot this issue, turn off your AC unit and inspect the fan blades for damage or debris. Call a professional to repair or replace the fan if it is damaged or not working correctly.


Knowing why your AC is not cooling can save you time and money. By troubleshooting these issues on your own or with the help of a professional, you can get your cool air back in no time. Outstanding customer service and expert AC installation services make us the premier choice for HVAC services for our Grand Prairie, TX homeowners.

If You Want To Learn More About Our Services Or Need Expert Air Conditioning Service In Grand Prairie, TX, Anthony's AC And Heating Is Here To Help. Contact Us Today To Schedule Your Appointment!