Problem
Your air conditioner is running, but the house temperature is not dropping.
Possible Causes
- Dirty air filter restricting airflow
- Low refrigerant levels
- Blocked outdoor condenser unit
- Dirty evaporator coil
- Incorrect thermostat setting
How To Fix It
- Replace or clean the air filter
- Check that the outdoor condenser unit is clear of debris
- Make sure the thermostat is set to cooling mode
- Clean visible dust around vents
When To Call A Professional
If the system runs continuously but never cools the house, the unit may have a refrigerant leak or compressor issue that requires a licensed HVAC technician.