Key Takeaways:
- If your AC is running but not cooling, the issue could stem from clogged filters, dirty coils, or thermostat problems.
- Low refrigerant levels due to leaks can cause your system to run without effectively cooling your home.
- Improper thermostat settings or placement near heat sources can mislead your system.
- Routine maintenance can prevent many of these issues before they disrupt comfort.
- Professional HVAC diagnostics are the best way to quickly identify and resolve the problem.
During hot and humid summers in Columbus, OH, few things are more frustrating than an air conditioner that’s running but not cooling your home. If your system seems to be working but the temperature just won’t budge, there could be a number of causes. Understanding what’s behind the issue can help you know when to take action and when to call a professional.
Common Reasons Your AC May Be Running Without Cooling
Several common HVAC problems can lead to a situation where your system appears to be running normally but fails to cool your home effectively. Thermostat errors, clogged filters, refrigerant leaks, or dirty evaporator coils can all be to blame. In many cases, the problem may start small, like reduced airflow or minor inefficiencies, but can worsen over time, eventually causing complete system shutdown or compressor damage.
How Dirty Coils and Filters Affect Cooling Performance
If your system isn’t cooling as it should, check your air filter first. A clogged filter can restrict airflow and reduce your system’s ability to circulate cool air effectively. Dirty evaporator coils, located inside your air handler, can also create a barrier that prevents heat from being removed from your indoor air.
These maintenance-related issues are common but preventable. Scheduling routine HVAC maintenance can help you avoid performance loss caused by buildup and debris.
Refrigerant Leaks and Low Levels
Your AC system relies on refrigerant to remove heat from your home. If refrigerant levels are low due to a leak, your system may run continuously without ever reaching the desired indoor temperature. Since handling refrigerant is not a DIY job, a trained HVAC technician should always be the one to diagnose and repair leaks, recharge your system, and ensure safe operation.
Is Your Thermostat to Blame?
Sometimes the issue isn’t with your system at all; it’s the thermostat. If it’s incorrectly programmed or placed near heat-generating appliances, it can misread your indoor temperature and cause cooling problems. It’s also possible the thermostat has malfunctioned or lost calibration. If adjusting settings doesn’t restore cooling, your technician may recommend upgrading to a modern smart thermostat for improved comfort and control.
When to Call for Professional Help
If your AC is running but not cooling, and you’ve ruled out filter and thermostat issues, it’s time to bring in the pros. Warning signs that need immediate attention include warm air from vents, visible ice on coils, frequent cycling, or high humidity levels indoors.
At Custom Air Company, we understand how important reliable cooling is for homeowners in Columbus, OH. Whether your system needs a refrigerant recharge, coil cleaning, or a full diagnostic inspection, our team of certified professionals is ready to help.
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