AC, air conditioning

5 Reasons Why Your AC is Running But Not Cooling

The trouble with an air conditioning (AC) system that is running but not cooling is it’s still consuming tons of energy, spiking your electricity consumption. Meanwhile, your home is still hot, uncomfortable, and stuffy.

You’ll probably do anything to fix the problem right away, especially during the summer months in Alabama, where the temperatures can reach up to 90 degrees Fahrenheit during the summer. But before you call air conditioner repair services in Birmingham, AL, it’s a good idea to try and narrow down the problem. Here are five likely reasons why an AC system looks and sounds functioning but is not blowing cold air.

1. Refrigerant Leak

Refrigerant is the lifeblood of any air conditioning system, and the system needs to function correctly. Without refrigerant, the system won’t be able to cool your home efficiently. If your air conditioning system leaks refrigerant, it’s time to take action. 

Leaking refrigerant is a severe problem and can cause several issues. The most common issue is that your system won’t be able to cool properly. You likely have a refrigerant leak if your system is running but not cooling. Low refrigerant levels can also cause the system to freeze up, which can cause further damage to the system. 

2. Blocked or Dirty Air Filter

Maintaining your air filter is essential to keeping your AC system running smoothly. When your air filter becomes blocked with dirt and debris, it can seriously impact your system’s efficiency and even cause it to stop working.

When the air filter becomes blocked, it restricts the airflow, preventing it from circulating correctly. This means the system will be running but won’t be able to cool the space efficiently. It can also cause the system to work harder, leading to higher energy bills and more wear and tear.

3. Faulty Thermostat

The thermostat is one of the most critical components of your home’s heating and cooling system. This device is responsible for helping regulate your home’s temperature and ensuring that it is comfortable for you and your family. Unfortunately, if your thermostat is set incorrectly, it can lead to several issues with your home’s heating and cooling system.

4. Faulty Compressor

The air conditioning compressor is one of the most critical components of your air conditioning system. It compresses the refrigerant and circulates it through the system to cool your home or business. Without the compressor, your air conditioning system would be unable to cool your space adequately.

To diagnose the issue with your compressor, it is recommended to call AC repair services in Birmingham, AL. A technician will be able to inspect the system and determine the cause of the issue. If the compressor is not working correctly, it must be replaced.

5. Clogged Condensate Drain

A clogged condensate drain is one of the most common problems homeowners face regarding their air conditioning systems. This issue can be caused by dirt, debris, and other contaminants that can build up in the condensate drain line, preventing the system from draining properly. When this happens, the system cannot cool effectively and can even lead to costly repairs.


It is essential to address any issues with your AC system as soon as possible to avoid further damage or costly repairs. Neglecting to repair an AC system can cause various problems, from increased energy costs to air quality issues. Inspecting and maintaining your AC system can help save you money and keep your home comfortable.

If you require air conditioner repairs in Birmingham, AL, don’t wait any longer to call Autumn Air Home Services. Our experienced technicians are here to provide you with quality and reliable air conditioner repair services. We’ll inspect and diagnose the issue, and provide the best solution to get your AC system back up and running. Call us today and let us help you keep your home cool and comfortable!

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