Should you cover your window air conditioner in the winter? After the air conditioner is dry, you can prevent rainwater from entering it by protecting its exterior with a fitted cover or plastic sheeting. Some manufacturers recommend leaving the exterior uncovered so that moisture can evaporate with natural airflow.
How do I protect my window air conditioner for the winter? Remove the outside cover from the window AC unit so that the inside components are exposed. Place a thick plastic garbage bag over the unit so it covers it completely and tuck the excess parts of the bag inside so it is fully sealed. Use duct tape to hold the bag in place if necessary.
Can you leave a window air conditioner outside in the winter? The unit should be stored indoors, and ideally in an attic or basement. Don’t store a unit outside, as that further subjects it to the elements. It needs to be kept in a dry environment, and preferably a warm one as well.
How do I insulate my air conditioner in the winter?