1. Check the Thermostat
- Make sure it’s set to “Cool” mode.
- Lower the temperature setting to see if cooling starts.
- Replace the batteries if applicable.
2. Inspect the Air Filter
- A clogged filter can restrict airflow and freeze the coils.
- Replace or clean the filter if it appears dirty.
3. Check for a Frozen Evaporator Coil
- Turn off the AC and let the coil thaw.
- Ensure vents are open and the filter is clean to prevent future freezing.
4. Examine the Outdoor Unit (Condenser)
- Remove dirt, leaves, or debris blocking airflow.
- Check if the fan is running; if not, it may be a motor or capacitor issue.
5. Inspect the Refrigerant Levels
- Low refrigerant levels (due to a leak) prevent cooling.
- A professional should handle refrigerant issues.
6. Check the Circuit Breaker
- Reset it if it has tripped.
- Frequent tripping could indicate an electrical issue.
7. Test the Compressor
- If the compressor isn’t running, it may need professional repair.
8. Look for Ductwork Issues
- Leaks or blockages in ducts can prevent cool air from reaching rooms.
- Seal any visible gaps or call a technician.
When to Call a Professional
If these steps don’t resolve the issue, a licensed HVAC technician can help with:
✅ Refrigerant leaks
✅ Electrical or wiring problems
✅ Compressor failure
✅ Major repairs
