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

Start with simple checks. Set the thermostat to Cool and a few degrees lower, and replace a dirty air filter. If you see ice on the evaporator coil, turn the system Off and let it thaw. If it still blows warm air, it may be a refrigerant leak, a faulty thermostat, or an electrical component issue that needs professional diagnostics. We provide prompt system diagnostics, same-day service, and 24/7 emergency HVAC repair in Ellicott City and Columbia.

Quick checks:

• Thermostat recalibration or replacement if unresponsive.
• Replace the air filter.
• Look for a frozen evaporator coil and thaw.

Updated: 2025-12-27

Need help in Ellicott City, MD? Call (410) 593-1980 or book online.