AC Running but Not Cooling? Common Causes in Lebanon, IN
If your AC is running but the air is warm, the issue is usually airflow, refrigerant, or an electrical part. Here is what we see most often.
Most common causes
- Dirty filter or coil: Restricts airflow and can cause the coil to freeze.
- Frozen evaporator: Often caused by low airflow or low refrigerant.
- Capacitor or contactor failure: The outdoor unit may not fully start.
- Refrigerant leak: Cooling drops gradually over days or weeks.
What you can check safely
- Replace the filter and let the system run for 30 minutes.
- Make sure vents are open and not blocked by furniture.
- Check if the outdoor unit is running and clear debris around it.
If it is still blowing warm, schedule AC repair in Lebanon to avoid compressor damage.
Local service links
We serve Lebanon and Boone County with same-day options when available.
FAQ
Is it safe to run the AC if it is not cooling?
No. Running it can damage the compressor. Turn it off and call.
How long does a typical AC repair take?
Most repairs are completed in one visit once the part is identified.
Do you repair all AC brands?
Yes. We service most major brands in Lebanon.