Plant trees and shrubs around your air conditioner. They will grow large enough to provide shade that will block sunlight from reaching the condenser. Plant a medium or large-sized tree at least 16 feet away from the building. Keep the immediate area around the AC unit clear to permit proper airflow.
Place a protective cover over the air conditioning unit. Ensure the cover is designed to prevent heat buildup since a regular tarp will trap heat from the sun.
Position an awning over the AC unit to further prevent the sun from hitting the unit for any length of time.