Why Your AC Is Not Cooling and How to Fix It

Common Causes

Dirty air filter — restricts airflow and can cause the coil to freeze. Replace it.
Thermostat set wrong — make sure it's on COOL, not just FAN.
Outdoor unit blocked — clear plants and debris 2 feet around the condenser.
Tripped breaker — AC units use a dedicated circuit. Check the panel.
Frozen evaporator coil — turn off AC, run fan only for 2-4 hours to thaw.

When to Call a Pro

If the system runs but blows warm air after checking the above, you likely have a refrigerant leak or compressor issue. Do not attempt to add refrigerant yourself.

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