Aircare 20x25x1 Washable Electrostatic Filter vs MaxMERV9 Washable Furnace Filter

Buy the Aircare if you need a standard 20x25x1 filter and want a rigid galvanized frame that holds its shape. Buy the MaxMERV9 if you want higher filtration and a lighter aluminum frame, and your return grille or furnace takes a 10x25x1. The MaxMERV9 is rated MERV 9 against MERV 8, but it is slightly more restrictive and some buyers report dented frames on arrival. The Aircare has far more owner ratings and a sturdier feel; the MaxMERV9 scores a touch higher on the smaller sample.

• Choose the Aircare if you need a true 20x25x1 size and want a rigid steel frame that resists bending.
• Choose the MaxMERV9 if your slot takes a 10x25x1 and you want the higher MERV 9 rating in a lighter aluminum frame.