How to Fix / Troubleshooting

Safety first: Turn off power before cleaning or opening panels.

Clean indoor filters: Remove and wash filters with mild detergent, then dry completely.
Clean coils: Gently vacuum the indoor coil and wash the outdoor coil with low-pressure water.
Check fan operation: Ensure both indoor and outdoor fans run smoothly at all speeds.
Check room conditions: Close windows and doors, and reduce heat sources (ovens, direct sun) where possible.
If performance remains poor: A technician should check refrigerant charge and system pressures and inspect for leaks.

Air conditioner runs but does not cool the room effectively

Possible Causes