Air conditioner runs but does not cool the room; air from the front grille is only slightly cool or room temperature.

Safety: Unplug the unit before cleaning or removing covers. Do not attempt to open refrigerant lines.

Steps:

• 1. Clean air filter: Remove and wash the filter with warm soapy water. Let it dry completely before reinstalling.
• 2. Clean coils: Remove the front cover and outer shell (if needed) to access both evaporator and condenser coils. Use a soft brush and vacuum to remove dust. For heavy buildup, use a coil cleaner approved for aluminum fins.
• 3. Check fans: Verify that both indoor and outdoor fans run at full speed. If the condenser fan is slow or not running, test and replace the fan motor or capacitor.
• 4. Inspect for ice: If the evaporator coil is icing over, there may be low airflow or low refrigerant. Ensure the fan is working and the filter is clean.
• 5. Professional evaluation: If coils are clean and fans are working but cooling is still poor, a refrigerant leak or compressor issue is likely. Contact a licensed HVAC technician.