More about MERV
MERV ratings allow you to effectively compare one type or brand of filter to another. For example, the EPA guidance for indoor air quality in schools recommends filters between MERV 8 and MERV 13. By comparison, the typical fiberglass throwaway filter used in most homes has a rating of MERV 4 or less. If allergies or asthma are your concern, we suggest you choose a MERV 8 filter at minimum.