This ac cover:
-Prevents rust and maximizes ac unit efficiency
-Is made from an attractive and protective fabric that is waterproof as well
-Is easily fitted and removed due to its padded handles
-Allows for a custom fit since it has an adjustable elastic hem
-Minimizes wind lofting and inside condensation as a result of the air vent design.
-Accommodates square air conditioners up to 34 inches long by 34 inches wide by 30 inches high
Outdoor air conditioners are designed to withstand outdoor weather conditions, so they do not necessarily need to be covered at the end of the warm weather season. Things such as harsh sunlight are anticipated by many ac manufacturers, and you can verify this type of information on their websites. Some manufacturers actually caution against using covers, since they may trap moisture and eventually damage their ac units.
Autumn leaves or other falling debris may be a concern, but there are alternatives other than completely covering the unit. You can place a piece of plywood over the top during the fall, and this will keep leaves from getting trapped inside.
This solution can work well as long as the plywood piece is heavy enough to keep from slipping off, and it can be removed as soon as it is no longer needed. You may have a unique need for coverage, and if you really feel that you need to cover your ac a short cover may be an ideal compromise.