Unit runs but does not cool the room effectively

Safety: Turn OFF and unplug the unit before cleaning.

Steps to improve cooling:

• Clean filter: Remove and wash the filter. Let it dry completely before reinstalling.
• Clean indoor coil: Remove the front cover and gently clean the evaporator coil with a soft brush or vacuum. Use coil cleaner if heavily soiled.
• Clean outdoor coil: Access the outdoor side and remove debris, lint, and dirt from the condenser coil. Ensure fins are straight and unobstructed.
• Check airflow: Make sure supply and return vents are not blocked by furniture or curtains.
• Check mode and setpoint: Confirm the unit is in COOL mode with a set temperature at least 5°F (3°C) below room temperature.
• Evaluate room size: Compare the unit’s BTU rating to the room size. If the room is significantly larger than recommended, the unit may be undersized.
• Refrigerant issues: If coils are clean and airflow is good but cooling is still weak, a technician should check refrigerant charge and compressor performance.