Unit runs but does not cool the room effectively; air from vents is only slightly cool.

Safety: Unplug the unit before cleaning coils or filters.

Steps:

• Clean filter: Wash the air filter and reinstall once dry.
• Clean coils: Gently clean both evaporator (cold) and condenser (hot) coils with a soft brush or vacuum. Ensure fins are straight.
• Check installation: For window units, verify that gaps around the unit are sealed. For portables, ensure the exhaust hose is properly connected and vented outside.
• Room size: Confirm that the BTU rating of your NewAir unit matches the room size. An undersized unit will struggle in hot conditions.
• Compressor and refrigerant: If coils are clean and airflow is good but cooling is still weak, the compressor or refrigerant charge may be at fault. Contact a licensed technician for sealed-system diagnosis.