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  • Writer's pictureCraftsman Network

Why Is My Air Conditioner Running But Not Cooling The House?


Are you sweating things out and wondering why your AC is running but not cooling the house? If so, uncovering the root of the problem is essential for getting it fixed. Here are some of the most common reasons why this happens. Some of the reasons are obvious and easy to repair, while others might require troubleshooting from an HVAC professional.


Open windows or doors - AC cools and works best in rooms sealed from the outdoor air. Allowing a window or door to remain open enables the cool air to escape and untreated air to enter your living space. When this happens, your AC has to run without providing the full benefits continuously.

Dirty air filter - One of the most common causes of an AC running but not cooling is a dirty air filter. When the filter is clogged, it can't let enough air through to cool the unit. Be sure to change your air filter every month for optimal performance.

Malfunctioning thermostat - Another common issue that can cause an AC to run but not cool is a malfunctioning thermostat. If the thermostat isn't calibrated correctly or isn't working correctly, it can prevent the AC from cooling the house.


Low refrigerant levels - Another possible reason for an AC running but not cooling is low refrigerant levels. Air conditioners have a refrigerant that can leak or evaporate over time. If the AC doesn't have enough, it won't be able to cool your home.


Clogged condenser - Another common issue that can lead to an AC running but not cooling is a clogged condenser. This part of the AC takes the heat out of the air and releases it outside. If it's blocked, it can't remove the heat, making it work harder to cool the house.


Dirty compressor coils - Dirty AC coils can also cause an AC to run but not cool. AC coils circulate refrigerant that absorbs the heat from your home and releases it outside. If they're dirty, they may not be able to absorb heat like they're supposed to, causing the AC unit to work harder.


Safety switch - Having a tripped safety switch is another AC problem that can cause it to run but not cool your home. If the unit has a clogged condenser, dirty coils, or other issues, it could proactively prevent the unit from starting or operating.


Arlington Texas Air Conditioning Services


If your AC isn't cooling, even though it's running, these are the most likely reasons. Contact AC Texas LLC to have one of our experts look and help you get your AC running like new again. We're happy to offer free estimates, and emergency services are always available.

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