Why is my Carrier 51QPD009N Air Conditioner not cooling well?
- TtallenJul 31, 2025
Poor cooling performance can occur for several reasons. Ensure all windows and doors are closed, and eliminate any heat sources in the room. Check the exhaust air duct to confirm it's properly connected and free from blockages; clean and reconnect if necessary. Also, clean the air filter and securely refit it. Finally, the temperature setting might be too high; try lowering it.