Though the MERV scale ranges from 1 to 20, with 20 being the most effective, experts recommend choosing a filter with a MERV rating of 8 to 13. Anything greater is not intended for residential use ...

The recent wildfires in Altadena and Pacific Palisades have been contained, but wildfire impact on air quality is something Californians should prepare for.

Overall score for the FilterBuy MERV 11/Gold is mainly how well the model removed dust and smoke from a test chamber and airflow resistance for whole-house units. Dust/pollen/smoke removal ...

The most commonly used system applies a MERV number (minimum efficiency reporting value) to each filter, which was developed by ASHRAE (formerly the American Society of Heating, Refrigerating and ...