Why Is My AC Not Cooling? 7 Things to Check
Before you call for service, a few simple checks can solve the problem — or help you explain it.
Request an AC technician1. Thermostat
Set to Cool, below room temperature, with fresh batteries if it uses them.
2. Filter
A clogged filter chokes airflow and can freeze the coil. See how often to change your AC filter.
3. Breakers
Check the AC breaker in the panel and the switch near the indoor unit.
4. Outdoor unit
Is the fan spinning? Clear plants and debris from around it.
5. Ice
Ice on the lines or coil means turn the system off and get it checked.
6. Vents
Make sure supply vents and returns are open.
7. When to call
If the checks do not help, or you hear grinding or smell burning. See AC repair.
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