MERV 11 Filters
MERV 11 is a common residential upgrade from MERV 8, capturing finer dust, pet dander and mould spores as well as pollen. Choose PureFilters pleated 3-packs in 1, 2 and 4 inch sizes, or media filters such as Lennox X6670, Honeywell FC100A1029, Aprilaire 410, GeneralAire 4541 and Electro Air M1-1056.
Compare MERV 8 and MERV 13 filters, or browse all furnace filters.
MERV 11 filter guide: when to upgrade and how to choose ▾
Why choose MERV 11?
MERV 11 captures more fine particles than MERV 8, which makes it a popular choice for homes with pets or mild allergies, and it is widely used in residential systems. Higher MERV can still restrict airflow in some systems, especially older furnaces with a 1-inch slot. If you are unsure, check your furnace specifications or replace like for like. Our MERV rating guide compares each level.
Pick by filter thickness
- 1 and 2 inch: PureFilters pleated 3-packs, sold by size such as 16x25x1, 20x20x1 and 20x20x2.
- 4 inch: Honeywell FC100A1029 (16x25x4) and FC100A1037 (20x25x4), Aprilaire 410 and PureFilters 4-inch 3-packs.
- 5 inch: Lennox Healthy Climate X6670 (HCF16-11) and X6673 (HCF20-11), Lennox BMAC, and GeneralAire 4541 and 4551.
- 6 inch: Electro Air Five Seasons M1-1056, M8-1056 and M2-1056, and GeneralAire 13415.
How often to change MERV 11 filters
1-inch filters are typically changed every 1 to 3 months. Thick 4 to 6 inch media filters usually last about 6 to 12 months. Check your filter regularly and change it sooner with pets or renovation dust; see our filter change guide.
