Why is Your Air Conditioner Not Cooling ?

Why Is The AC Running But Not Cooling?

During the summer, one of the most common issues is that the air conditioner is not blowing cold air. There are various reasons why your AC unit may stop circulating cold air. Some are easy and fixed right away, while others necessitate the assistance of a professional AC repair in Louisville.

Reasons Why your Air Conditioning System is Running but Not Cooling

Incorrect Thermostat Setting: If your AC is not cooling, check the thermostat settings first.
Someone else in your home may inadvertently modify the thermostat setting. Ensure that the thermostat is set to cool. If all your settings appear to be accurate, but your unit is still not blowing cold air, contact the professional for help.

Dirty Air Filters: Filters are an essential part of an AC system and may cause an AC not to blow cold air. They become clogged with dust and debris, obstructing or reducing airflow. The cold air will be unable to circulate in your residence. Furthermore, it might cause the evaporator coil to freeze, limiting airflow.
Change your air conditioner filters at least once a month, more frequently if you use your system frequently or have pets.

Blocked Condenser: The condenser is responsible for providing cool air within your room, and if it becomes blocked, you will begin to feel uncomfortable throughout the heat. If this component collects dirt over time, it will prevent cold air from entering the room as needed.
Make sure you properly clean the condenser and the surrounding area. There should be sufficient space around the condenser.

Undersized Air Conditioner: Always buy an air conditioner that can meet the space requirements of your home or workplace. A small air conditioner in a large room will always struggle to keep the room cool during the summer. On the other hand, if you choose an oversized AC, it will frequently cycle on and off, which means it will not continuously cool the house.
Consult an AC specialist to help you select the best unit for your home depending on its square footage, the number of occupants, and the climatic conditions in your location.

Leaking Refrigerant: A leaking refrigerant might also be one of the causes of an air conditioner not cooling. If you have a refrigerant leak, your air conditioner will still function, but the temperature will be much less comfortable.
Contact an air conditioner repair specialist to repair any leaks and refill the refrigerant levels.

Frozen Evaporator Coils: A frozen evaporator coil is another issue that can cause your air conditioning system to run but not cool. The dirt accumulation restricts airflow, interfering with the heat exchange process and causing moisture from the inside air to cool and freeze coils.
Turn off the air conditioner to thaw the ice, then contact a professional to examine and repair the problem.


An annual Louisville AC service is the best way to avoid your air conditioner not cooling effectively. If your AC is running but not cooling effectively, it may be time to call a trained AC specialist of C & L Heating and Air to troubleshoot the problem.

Contact Us Today For AC replacement in Louisville and Surrounding Areas.