An AC that is running but not cooling usually points to blocked airflow, low refrigerant, or a control/thermostat problem preventing heat removal. The most common cause is a dirty air filter or a clogged outdoor coil that starves the system of airflow. Other frequent issues include an iced evaporator from low refrigerant, a weak blower or condenser fan, or leaky/collapsed ductwork that dumps cold air into an attic instead of rooms. A technician’s telltale sign is a cold suction line with little air from vents, which means the coil is freezing. We fix this scenario often for homeowners across the Nocatee area.
Try these quick checks before scheduling service:
- Set thermostat to Cool and a few degrees below room temperature; confirm the fan is on Auto.
- Replace or clean the air filter; make sure supply and return vents are open.
- Clear leaves and debris around the outdoor unit and keep at least 2 feet of space.
- If you see ice on the refrigerant lines or water at the air handler, turn the AC off and call for service.
Take a photo of any ice or error codes before it melts to speed up diagnosis.
Updated: 2026-09-02
Need help in Nocatee, FL? Call (904) 870-8881 or book online.