If an AC system runs but rooms stay warm, describe whether airflow feels weak, whether the thermostat is set to cool, and when performance changed. These observations are more useful than repeatedly resetting the unit.
Simple checks
- Confirm the thermostat is set to cool and the requested temperature is below the room temperature.
- If the filter is safely accessible, check whether it needs cleaning or replacement. A clogged filter can restrict airflow.
- Note any visible ice, water, repeated shutdowns, or unusual sounds. Do not open electrical panels or handle refrigerant.
If the problem continues, call (201) 852-0606 with the equipment type and symptoms. A professional evaluation may be needed.
General filter guidance: U.S. Department of Energy.