Cleaning a window AC unit is a simple task that greatly improves performance and helps ensure it runs properly for many years. Routine cleaning and maintenance can also lower energy bills and improve the air quality in your home by eliminating dust and preventing mold and mildew from forming.

Remove the unit from the window and store it during the off-season. Do you need to take your AC unit out of the window to clean it? No, you can clean your air conditioner without taking it out of the window. Once you remove the face panel, filter, and casings, there's enough room for thorough cleaning.

Unplug the window air conditioner unit. Remove the front cover, consulting the owner's manual on how best to remove it. Fill a spray bottle with water and a few drops of dish soap. Spray the front cover with the cleaning solution and wipe clean with a microfiber cloth. Set aside to dry. Remove the filter from the unit.

Cleaning your window air conditioner regularly is vital to keeping it in good working order. In addition to cleaning your filter monthly, it’s recommended to clean the interior and coils of your AC unit every year. We interviewed air conditioning technician Victor Belavus to teach you everything you need to know to clean a window air conditioner.