We don’t recommend it. Covering your air conditioning unit can create an ideal space for critters to make their home during the fall and winter months, which might cause damage to many components in the unit.
If you are concerned about your air conditioner being exposed, there’s no need to be. They are built to withstand the elements year-round. During your annual spring tune up, the technician will check for any debris inside the unit to ensure safety before you start it for the first time.