Aircare 20x25x1 Washable Electrostatic Filter vs Air-Care Forever Filter 10x10x1 MERV 8

These are the same Air-Care permanent electrostatic filter in two very different sizes, so the choice is decided by your return-air grille, not by features. Both are MERV 8, washable, galvanized-framed and rated 4.6 stars by roughly 495 owners. The 20x25x1 is the standard whole-house furnace size and fits most central HVAC systems; the 10x10x1 is a small return or room register size and will not fit a typical furnace slot. Owners of both report the frames hold up over years of washing, though the electrostatic media loses some pull once it gets greasy and needs a proper rinse.

• Choose the Aircare 20x25x1 if your furnace or air handler takes a standard 20x25x1 slot and you want one washable filter for the whole house.
• Choose the Air-Care 10x10x1 if you have a small 10x10 return grille, a mini-split, or a room register that takes this size.