If you’ve ever wondered “why is my AC not cooling,” you understand how frustrating it can be. No one wants to endure a hot, uncomfortable home during summer. There are several reasons why your air conditioner may not function properly. In this article, we’ll explore each issue in detail so you can get your cooling system working effectively again.

Dirty Air Filters

Dirty air filters are one of the most common reasons why an air conditioner may not be able to cool your home. When a filter is clogged with dirt and debris, it restricts the airflow, which makes it more difficult for your AC to cool the air. In this case, the solution is simple: change or clean your air filter regularly. It is recommended to change your filter at least once a month.

Refrigerant Levels

Refrigerant is the chemical that cools the air in your air conditioner. If your refrigerant level is low, your AC will not be able to cool your air properly. If you suspect your refrigerant levels are low, it is important to call a professional as it can be dangerous to handle and release harmful chemicals into the environment.

Faulty Thermostat

If your air conditioner is running but not cooling, it’s possible that your thermostat is faulty. Sometimes, all you need to do is to reset the thermostat, but if that doesn’t work, you might need to replace it altogether. A professional HVAC technician will be able to diagnose and fix any thermostat issues.

Dirty Outdoor Unit

The outdoor unit of your air conditioner can become clogged with dirt, leaves, and other debris that can impact the unit’s efficiency. This can cause the air conditioner to run but not provide adequate cooling. A simple solution is to ensure that you keep the outdoor unit clean and free of debris.

Broken Compressor

The compressor is the part of your air conditioner that is responsible for compressing the refrigerant. If it breaks down, your AC will not be able to cool your air. Unfortunately, this is a much more complicated fix, and you will need to call a professional HVAC technician to repair or replace the compressor.


An air conditioner not cooling your home is a frustrating problem, but there are several reasons why it might be happening. From dirty air filters to a broken compressor, there are many potential causes that should be addressed by a professional HVAC technician. If you’re experiencing issues with your air conditioner, don’t hesitate to call Steve Patrick Air at 559-224-1729. Our team of experienced professionals is here to help you get your air conditioning system back on track.

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