Pleated air filters do the best at improving your indoor air quality when compared to a basic fiberglass style filter. Pleated filters are one of the most popular filter options, made from polyester or cotton paper, can remove some small particles like spores and mites. The Pleated Filter options on RTF range from MERV 8 rating all the way up to MERV 13.
Pleated filters should be checked about every 90 days. If it looks dirty replace it, a dirty filter will decrease your efficiency and can damage your HVAC system. If you have questions about Pleated Furnace and AC filters let us know.