Unit runs but does not cool the room effectively; air from vents is not very cold.

Safety: Unplug before cleaning internal components.

Steps:

• 1. Clean filter: Remove and wash the air filter. A clogged filter is the most common cause of poor cooling.
• 2. Clean coils: Access the evaporator (front) and condenser (rear) coils. Gently brush off dust and lint. For heavy buildup, use a coil cleaner approved for aluminum fins, following label directions.
• 3. Check airflow: Ensure intake and exhaust vents are not blocked by curtains, furniture, or walls. For portables, verify the exhaust hose is short, straight, and properly vented outdoors.
• 4. Mode and setpoint: Confirm the unit is in COOL mode with a temperature set at least 5°C (9°F) below room temperature.
• 5. Thermistor placement: Ensure the room sensor is not too close to the cold air discharge, which can cause the unit to think the room is cooler than it is.
• 6. Refrigerant issues: If coils are clean, airflow is good, and the compressor runs but cooling is still weak, the sealed system may be low on refrigerant or restricted. This requires a licensed technician; sealed system repairs are often not cost-effective on small Danby units.