Filters have a efficiency rating called MERV, ( Minimum Efficiency Reporting Value). The higher the MERV rating , the cleaner the air and the better the equipment protection. Control dust, dirt, and pollen with high quality filters and/or air cleaners.
Every month, especially during the summer months, remove any leaves or debris from outdoor condenser units. Help keep the outdoor condenser fan running efficiently by having the fan blades and coils cleaned before each cooling season.