Why Is My Air Conditioner Running But Not Cooling Properly?

Your AC can run but not cool when airflow is restricted, settings are incorrect, or a part needs service. Try these quick checks first.

• Set the thermostat to Cool with fan on Auto and lower the setpoint.
• Replace or clean the 1-inch filter.
• Open all vents and clear debris around the outdoor unit. If it still won’t cool, we offer a $79 A/C Diagnostic with 2 hour arrival (before 2 PM) or a $59 same-day diagnostic in Anaheim and Long Beach. We service most brands and perform on-the-spot repairs.

Updated: 2025-12-31 00:00:00

Need help in Fullerton, CA? Call 888-380-1775 or book online.