Or in English, “how effective is your air filter?” MERV ratings range from 1-20. The higher the MERV rating on a filter, the fewer dust particles and other contaminants can pass through it.

Overall score for the Aerostar MERV 13 is mainly ... Airflow resistance: How freely air passes through a whole-house unit. You will get digital access to reviews and ratings for over 8,500 ...

Overall score for the FilterBuy MERV 11/Gold is ... Airflow resistance: How freely air passes through a whole-house unit. You will get digital access to reviews and ratings for over 8,500 products ...

That reduces the air pressure resisting the blower action by a factor of four. The chart displays the static pressure drop curves for filters at four MERV ratings. The vertical axis shows system ...