What Should I Do If My AC Is Running But Not Cooling?

Start with quick checks you can do safely. Replace a dirty air filter. Confirm the thermostat is set to Cool and a lower temperature. Clear debris around the outdoor unit. Open supply and return vents to improve airflow. If you see ice on the refrigerant lines or coil, turn the AC off to thaw.

If it still won’t cool, schedule service. Our technicians can clean coils, verify refrigerant level, test the thermostat, tighten electrical connections, and clear the condensate drain. We offer 24/7 help in Glendale Heights and Schaumburg.

• Quick checks:
• • Thermostat set to Cool
  • Replace filter
  • Clear outdoor debris
  • Open vents/returns
  • Check for ice or drain clogs

Updated: 2025-12-24 00:00:00

Need help in St. Charles, IL? Call (331) 294-8710 or book online.