You hear your air conditioner humming along, but the temperature inside your home won’t budge. If your AC is running but not cooling, something’s off—and it’s worth taking a closer look at what might be causing the issue and when to call a team of local cooling services experts.
Check Your Thermostat Settings
Start with the simplest solution. It’s possible the thermostat is set to “fan” instead of “cool,” which means the system is circulating air without actively lowering the temperature. Also, double-check the set temperature to make sure it’s below the current indoor temperature.
Dirty Air Filter Could Be Restricting Airflow
One of the most common reasons an AC system can’t cool properly is a clogged air filter. When filters become packed with dust and debris, airflow gets restricted, and the system struggles to move cool air through your home. Replacing the filter regularly helps prevent performance issues and extends the life of your system.
Low Refrigerant Levels
If your AC is running but not cooling, there may be a refrigerant issue. Refrigerant is the chemical that absorbs heat from the air inside your home. Low levels—usually caused by a leak—can reduce your system’s ability to cool effectively. You might notice ice buildup on the lines or hear a hissing sound if this is the case.
Dirty or Blocked Outdoor Unit
The outdoor condenser unit needs proper airflow to release heat. If it’s covered in dirt, leaves, or other debris, it may not be able to function properly. Restricted airflow around the condenser can prevent your system from cooling efficiently.
Compressor or Electrical Problems
The compressor is the heart of your AC system. If it’s damaged or failing, your system may still run, but it won’t cool. Similarly, faulty capacitors, relays, or wiring issues can cause a disconnect between the system’s components, disrupting its ability to cool your home.
Call for Professional Diagnosis
There’s a range of issues that can cause your AC to stop cooling while still running. While some are simple fixes, others require trained eyes to diagnose and repair.
At Daflure, we help homeowners in New Cumberland, PA stay comfortable year-round with reliable air conditioning repair and other services. If your AC is acting up, don’t wait for the heat to get worse—give us a call today to schedule a service appointment.
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