10 bestPermanent Furnace Filtersof January 2026
112M consumers helped this year.
1
Filtrete AD19-6PK-1E, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 6-Pack (Exact Dimensions 11.81 x 19.81 x 0.81), White
Filtrete
9.8
2
Precisionaire Furnace Air Filter 25 " X 25 " X 1 " Fiberglass
Flanders
9.6
3
Nordic Pure 20x24x4M14-2 Pleated AC Furnace Air Filter, Box of 2
Nordic Pure
9.4
4
Nordic Pure 14x24x2M14-3 Pleated AC Furnace Air Filter, Box of 3
Nordic Pure
9.2
5
TRIGHTFILTERS 14x30x1 Furnace Filters
TRIGHTFILTERS
8.9
Other
Washable Furnace Filter - 14x25x1 (14 x 20 x 1)
Torjim 18x20x1 Reusable Electrostatic Air Filter, Aluminum AC/HVAC Furnace Filter, MERV 8 Permanent Air Filter, Lasts a Lifetime, Easy to Install, Healthier Home/Office Environment
True Blue 12" X 24" X 1" Furnace Air Filter Sold in packs of 12
Demiwise 16x25x1 Electrostatic Air Filter, Washable & Reusable Aluminum AC/HVAC Furnace Filter, Permanent Air Filter for Home, Lasts a Lifetime, Easy to Install, Healthier Home/Office Environment
6
TRIGHTFILTERS 14x25x1 Furnace Filters
TRIGHTFILTERS
8.6
7
14x20x1 Fibreglass Furnace Filter, Pack of 12
Flanders
8.4
8
True Blue 20" X 25" X 1" Furnace Air Filter Sold in Packs of 12
TRUE BLUE
8.1
9
True Blue 24" X 24" X 1" Furnace Air Filter Sold in Packs of 12
TRUE BLUE
7.8
10
Trophy Air Washable Electrostatic HVAC Furnace Air Filter, Lasts a Lifetime, 6 Stage Permanent Air Filter, Healthier Home or Office, Made in The USA - Increases Airflow (18x24x1)
Trophy Air
7.5
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