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.
Regularly change (or clean if reusable) HVAC filters every month during peak cooling or heating seasons. Dirty filters cost more to use, overwork the equipment and result in lower indoor air quality. Consider high quality air cleaning to clean the air you breathe and protect your equipment.