1. Warm Air Instead of Cold

If your system blows warm or mildly cool air, you may have:

• Low refrigerant
  
• A failing compressor
  
• A clogged expansion valve
  
• Electrical control issues
  

2. Weak Airflow

Weak air pressure often indicates:

• Blocked cabin air filter
  
• Blower motor problems
  
• Vent obstructions
  
• Evaporator core issues
  

3. Strange Noises

Grinding, squealing, or rattling sounds when the AC runs may point to compressor or belt problems.

4. Unpleasant Odors

Musty smells usually mean mold or bacteria buildup inside the evaporator core.

5. Leaking Fluid Under the Car

While water drainage is normal, refrigerant leaks are not and should be inspected immediately.

6. AC Only Works While Driving

This may indicate cooling fan issues or compressor inefficiency.

7. Dashboard Warning Lights

Modern vehicles may trigger engine or AC system alerts when cooling components fail.