Why is my AC running but not cooling?

Common causes include a dirty air filter, low refrigerant, frozen evaporator coil, faulty capacitor, or a dirty condenser. Try replacing the filter and checking the thermostat first. If the problem persists, call LegendAir at (215) 317-6099 for same-day diagnosis in Warminster.

How do I reset my AC unit?

Turn off the thermostat, switch the AC breaker off, wait 5 minutes, turn the breaker back on, then turn on the thermostat. If the AC still won't cool, the issue is likely a failed component requiring professional repair. Call (215) 317-6099.

AC Not Cooling? 10 Troubleshooting Steps Before Calling for Repair

Summary: AC not cooling your Warminster home? Follow these 10 step-by-step troubleshooting steps before calling for repair. Learn when to DIY and when you need a professional HVAC technician.

Frequently Asked Questions

Why is my AC running but not cooling?: Common causes include a dirty air filter, low refrigerant, frozen evaporator coil, faulty capacitor, or a dirty condenser. Try replacing the filter and checking the thermostat first. If the problem persists, call LegendAir at (215) 317-6099 for same-day diagnosis in Warminster.
How do I reset my AC unit?: Turn off the thermostat, switch the AC breaker off, wait 5 minutes, turn the breaker back on, then turn on the thermostat. If the AC still won't cool, the issue is likely a failed component requiring professional repair. Call (215) 317-6099.

Written by the NATE-certified technicians at LegendAir Heating & Cooling in Warminster PA.

Need HVAC service? Call (215) 317-6099 or book online.

Back to Blog