Furnace Air Filters
Find your furnace filter by size, then pick a MERV rating and buy on Amazon.
Browse by size
Furnace Air Filters in our index
TW16301
Fiberglass 16" X 30" X 1" Panel Filter- Equipment Protection
AAF · 16x30x1 · MERV 4
TW18301
Fiberglass 18" X 30" X 1" Panel Filter- Equipment Protection
AAF · 18x30x1 · MERV 4
10x20x1-ALLERGY
10x20x1 AIRx ALLERGY Air Filter, 6-Pack
AIRx · 10x20x1 · MERV 11
Replaces 1 part
10x24x1-ALLERGY
10x24x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x24x1 · MERV 11
Replaces 1 part
14x18x1-ALLERGY
14x18x1 AIRx ALLERGY Air Filter - MERV 11, 6-Pack
AIRx · 14x18x1 · MERV 11
Replaces 1 part
14x24x1-ALLERGY
14x24x1 AIRx ALLERGY Air Filter, 6-Pack
AIRx · 14x24x1 · MERV 11
Replaces 1 part
14x25x1-ALLERGY
14x25x1 AIRx ALLERGY Air Filter, 6-Pack
AIRx · 14x25x1 · MERV 11
Replaces 1 part
10x20x1-HEALTH
10x20x1 AIRx HEALTH Air Filter, 6-Pack
AIRx · 10x20x1 · MERV 13
Replaces 1 part
14x25x1-HEALTH
14x25x1 AIRx HEALTH Air Filter, 6-Pack
AIRx · 14x25x1 · MERV 13
Replaces 1 part
10x24x1-HEALTH
10x24x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x24x1 · MERV 13
Replaces 1 part
12x12x1-HEALTH
12x12x1 AIRx HEALTH Air Filter, 6-Pack
AIRx · 12x12x1 · MERV 13
Replaces 1 part
14x24x1-HEALTH
14x24x1 AIRx HEALTH Air Filter, 6-Pack
AIRx · 14x24x1 · MERV 13
Replaces 1 part
10x20x2-ALLERGY
10x20x2 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x20x2 · MERV 11
10x20x2-HEALTH
10x20x2 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x20x2 · MERV 13
12x12x1-ODOR
12x12x1 AIRx ODOR Air Filter - Carbon, 6-Pack
AIRx · 12x12x1 · MERV 7
Replaces 1 part
14x25x1-ODOR
14x25x1 AIRx ODOR Air Filter - Carbon, 6-Pack
AIRx · 14x25x1 · MERV 7
Replaces 1 part
10x10x1-ODOR
10x10x1 AIRx ODOR Air Filter - Carbon, 6-Pack
AIRx · 10x10x1 · MERV 7
Replaces 1 part
10x20x2-ODOR
10x20x2 AIRx ODOR Air Filter - CARBON
AIRx · 10x20x2 · MERV 8
10x20x1-DUST
10x20x1 AIRx DUST Air Filter
AIRx · 10x20x1 · MERV 8
Replaces 1 part
10x24x1-DUST
10x24x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x24x1 · MERV 8
Replaces 1 part
12x12x1-DUST
12x12x1 AIRx DUST Air Filter, 6-Pack
AIRx · 12x12x1 · MERV 8
Replaces 1 part
14x24x1-DUST
14x24x1 AIRx DUST Air Filter, 6-Pack
AIRx · 14x24x1 · MERV 8
Replaces 1 part
14x25x1-DUST
14x25x1 AIRx DUST Air Filter, 6-Pack
AIRx · 14x25x1 · MERV 8
Replaces 1 part
10x20x2-DUST
10x20x2 AIRx DUST Air Filter - MERV 8
AIRx · 10x20x2 · MERV 8
10x20x1-ODOR
10x20x1 AIRx ODOR Air Filter - Carbon, 6-Pack
AIRx · 10x20x1 · MERV 7
Replaces 1 part
10x10x1-DUST
10x10x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x10x1 · MERV 8
Replaces 1 part
10x10x1-ALLERGY
10x10x1 AIRx ALLERGY Filter - MERV 11
AIRx · 10x10x1 · MERV 11
Replaces 1 part
10x10x1-HEALTH
10x10x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x10x1 · MERV 13
Replaces 1 part
10x16x1-DUST
10x16x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x16x1 · MERV 8
Replaces 1 part
10x16x1-ALLERGY
10x16x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x16x1 · MERV 11
10x15x1-DUST
10x15x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x15x1 · MERV 8
10x15x1-ALLERGY
10x15x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x15x1 · MERV 11
3856-1224LRG
12" X 24" X 1" Lifetime Permanent Washable Filter
Permatron · 12x24x1
3856-1212LRG
12" X 12" X 1" Lifetime Permanent Washable Filter
Permatron · 12x12x1
3856-1220LRG
12" X 20" X 1" Lifetime Permanent Washable Filter
Permatron · 12x20x1
10x10x2-DUST
10x10x2 AIRx DUST Air Filter - MERV 8
AIRx · 10x10x2 · MERV 8
10x10x2-ALLERGY
10x10x2 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x10x2 · MERV 11
14x25x1-DUST
14x25x1 AIRx DUST Air Filter, 12-Pack
AIRx · 14x25x1 · MERV 8
Replaces 1 part
14x25x1-ALLERGY
14x25x1 AIRx ALLERGY Air Filter, 12-Pack
AIRx · 14x25x1 · MERV 11
Replaces 1 part
14x25x1-HEALTH
14x25x1 AIRx HEALTH Air Filter, 12-Pack
AIRx · 14x25x1 · MERV 13
Replaces 1 part
14x25x1-ODOR
14x25x1 AIRx ODOR Air Filter - Carbon, 12-Pack
AIRx · 14x25x1 · MERV 7
Replaces 1 part
14x24x1-DUST
14x24x1 AIRx DUST Air Filter, 12-Pack
AIRx · 14x24x1 · MERV 8
Replaces 1 part
14x24x1-HEALTH
14x24x1 AIRx HEALTH Air Filter, 12-Pack
AIRx · 14x24x1 · MERV 13
Replaces 1 part
14x24x1-ALLERGY
14x24x1 AIRx ALLERGY Air Filter, 12-Pack
AIRx · 14x24x1 · MERV 11
Replaces 1 part
12x12x1-DUST
12x12x1 AIRx DUST Air Filter, 12-Pack
AIRx · 12x12x1 · MERV 8
Replaces 1 part
12x12x1-ALLERGY
12x12x1 AIRx ALLERGY Air Filter, 12-Pack
AIRx · 12x12x1 · MERV 11
Replaces 1 part
12x12x1-HEALTH
12x12x1 AIRx HEALTH Air Filter, 12-Pack
AIRx · 12x12x1 · MERV 13
Replaces 1 part
12x12x1-ODOR
12x12x1 AIRx ODOR Air Filter - Carbon, 12-Pack
AIRx · 12x12x1 · MERV 7
Replaces 1 part
10x15x1-HEALTH
10x15x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x15x1 · MERV 13
10x15x1-ODOR
10x15x1 AIRx ODOR Air Filter - CARBON
AIRx · 10x15x1 · MERV 8
Replaces 1 part
10x16x1-HEALTH
10x16x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x16x1 · MERV 13
10x16x1-ODOR
10x16x1 AIRx ODOR Air Filter - CARBON
AIRx · 10x16x1 · MERV 8
10x10x1-DUST
10x10x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x10x1 · MERV 8
Replaces 1 part
10x10x1-ALLERGY
10x10x1 AIRx ALLERGY Filter - MERV 11
AIRx · 10x10x1 · MERV 11
Replaces 1 part
10x10x1-HEALTH
10x10x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x10x1 · MERV 13
Replaces 1 part
10x15x1-DUST
10x15x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x15x1 · MERV 8
10x15x1-ALLERGY
10x15x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x15x1 · MERV 11
10x15x1-HEALTH
10x15x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x15x1 · MERV 13
10x20x1-DUST
10x20x1 AIRx DUST Air Filter, 12-Pack
AIRx · 10x20x1 · MERV 8
Replaces 1 part
10x20x1-ALLERGY
10x20x1 AIRx ALLERGY Air Filter, 12-Pack
AIRx · 10x20x1 · MERV 11
Replaces 1 part
10x20x1-HEALTH
10x20x1 AIRx HEALTH Air Filter, 12-Pack
AIRx · 10x20x1 · MERV 13
Replaces 1 part
10x20x1-ODOR
10x20x1 AIRx ODOR Air Filter - Carbon, 12-Pack
AIRx · 10x20x1 · MERV 7
Replaces 1 part
10x24x1-DUST
10x24x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x24x1 · MERV 8
Replaces 1 part
10x24x1-ALLERGY
10x24x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x24x1 · MERV 11
Replaces 1 part
10x24x1-HEALTH
10x24x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x24x1 · MERV 13
Replaces 1 part
10x24x1-ODOR
10x24x1 AIRx ODOR Air Filter - Carbon, 6-Pack
AIRx · 10x24x1 · MERV 7
Replaces 1 part
10x24x1-ODOR
10x24x1 AIRx ODOR Air Filter - Carbon, 12-Pack
AIRx · 10x24x1 · MERV 7
Replaces 1 part
10x16x1-DUST
10x16x1 AIRx DUST Air Filter - MERV 8
AIRx · 10x16x1 · MERV 8
Replaces 1 part
10x16x1-ALLERGY
10x16x1 AIRx ALLERGY Air Filter - MERV 11
AIRx · 10x16x1 · MERV 11
10x16x1-HEALTH
10x16x1 AIRx HEALTH Air Filter - MERV 13
AIRx · 10x16x1 · MERV 13
10x16x1-ODOR
10x16x1 AIRx ODOR Air Filter - CARBON
AIRx · 10x16x1 · MERV 8
10x10x1-ODOR
10x10x1 AIRx ODOR Air Filter - Carbon, 12-Pack
AIRx · 10x10x1 · MERV 7
Replaces 1 part
FG16x25x1
Fiberglass 16" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 16x25x1 · MERV 4
FG16x20x1
Fiberglass 16" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 16x20x1 · MERV 4
FG14x25x1
Fiberglass 14" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 14x25x1 · MERV 4
FG16x16x1
Fiberglass 16" X 16" X 1" Panel Filter - Equipment Protection
CA, Inc. · 16x16x1 · MERV 4
FG14x30x1
Fiberglass 14" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 14x30x1 · MERV 4
FG16x24x1
Fiberglass 16" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 16x24x1 · MERV 4
FG12x30x1
Fiberglass 12" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 12x30x1 · MERV 4
FG10x10x1
Fiberglass 10" X 10" X 1" Panel Filter - Equipment Protection
CA, Inc. · 10x10x1 · MERV 4
FG16x20x2
Fiberglass 16" X 20" X 2" Panel Filter - Equipment Protection
CA, Inc. · 16x20x2 · MERV 4
FG25x25x1
Fiberglass 25" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 25x25x1 · MERV 4
FG8x30x1
Fiberglass 8" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 8x30x1 · MERV 4
FG20x22-1/4x1
Fiberglass 20" X 22-1/4" X 1" Panel Filter - Equipment Protection
CA, Inc. · 20x2214x1 · MERV 4
FG22x22x1
Fiberglass 22" X 22" X 1" Panel Filter - Equipment Protection
CA, Inc. · 22x22x1 · MERV 4
FG15x25x1
Fiberglass 15" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 15x25x1 · MERV 4
FG20x20x1
Fiberglass 20" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 20x20x1 · MERV 4
FG10x20x1
Fiberglass 10" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 10x20x1 · MERV 4
FG10x24x1
Fiberglass 10" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 10x24x1 · MERV 4
FG10x30x1
Fiberglass 10" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 10x30x1 · MERV 4
FG12x12x1
Fiberglass 12" X 12" X 1" Panel Filter - Equipment Protection
CA, Inc. · 12x12x1 · MERV 4
FG12x20x1
Fiberglass 12" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 12x20x1 · MERV 4
FG12x24x1
Fiberglass 12" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 12x24x1 · MERV 4
FG14x14x1
Fiberglass 14" X 14" X 1" Panel Filter - Equipment Protection
CA, Inc. · 14x14x1 · MERV 4
FG14x20x1
Fiberglass 14" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 14x20x1 · MERV 4
FG14x24x1
Fiberglass 14" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 14x24x1 · MERV 4
FG15x20x1
Fiberglass 15" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 15x20x1 · MERV 4
FG15x30x1
Fiberglass 15" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 15x30x1 · MERV 4
FG16x16x2
Fiberglass 16" X 16" X 2" Panel Filter - Equipment Protection
CA, Inc. · 16x16x2 · MERV 4
FG16x25x2
Fiberglass 16" X 25" X 2" Panel Filter - Equipment Protection
CA, Inc. · 16x25x2 · MERV 4
FG16x30x1
Fiberglass 16" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 16x30x1 · MERV 4
FG18x18x1
Fiberglass 18" X 18" X 1" Panel Filter - Equipment Protection
CA, Inc. · 18x18x1 · MERV 4
FG18x20x1
Fiberglass 18" X 20" X 1" Panel Filter - Equipment Protection
CA, Inc. · 18x20x1 · MERV 4
FG18x24x1
Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 18x24x1 · MERV 4
FG18x25x1
Fiberglass 18" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 18x25x1 · MERV 4
FG20x20x2
Fiberglass 20" X 20" X 2" Panel Filter - Equipment Protection
CA, Inc. · 20x20x2 · MERV 4
FG20x24x1
Fiberglass 20" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 20x24x1 · MERV 4
FG20x25x1
Fiberglass 20" X 25" X 1" Panel Filter - Equipment Protection
CA, Inc. · 20x25x1 · MERV 4
FG20x25x2
Fiberglass 20" X 25" X 2" Panel Filter - Equipment Protection
CA, Inc. · 20x25x2 · MERV 4
FG20x30x1
Fiberglass 20" X 30" X 1" Panel Filter - Equipment Protection
CA, Inc. · 20x30x1 · MERV 4
FG24x24x1
Fiberglass 24" X 24" X 1" Panel Filter - Equipment Protection
CA, Inc. · 24x24x1 · MERV 4
FG16x24x2
Fiberglass 16" X 24" X 2" Panel Filter - Equipment Protection
CA, Inc. · 16x24x2 · MERV 4
FG24x24x2
Fiberglass 24" X 24" X 2" Panel Filter - Equipment Protection
CA, Inc. · 24x24x2 · MERV 4
14x25x1-ALLERGY
14x25x1 AIRx ALLERGY Air Filter, 4-Pack
AIRx · 14x25x1 · MERV 11
Replaces 1 part
14x25x1-DUST
14x25x1 AIRx DUST Air Filter, 4-Pack
AIRx · 14x25x1 · MERV 8
Replaces 1 part
10x20x1-ALLERGY
10x20x1 AIRx ALLERGY Air Filter, 4-Pack
AIRx · 10x20x1 · MERV 11
Replaces 1 part
10x20x1-ALLERGY
10x20x1 AIRx ALLERGY Air Filter
AIRx · 10x20x1 · MERV 11
Replaces 1 part
10x20x1-DUST
10x20x1 AIRx DUST Air Filter, 4-Pack
AIRx · 10x20x1 · MERV 8
Replaces 1 part
10x20x1-DUST
10x20x1 AIRx DUST Air Filter
AIRx · 10x20x1 · MERV 8
Replaces 1 part
10x20x1-HEALTH
10x20x1 AIRx HEALTH Air Filter, 4-Pack
AIRx · 10x20x1 · MERV 13
Replaces 1 part
10x20x1-HEALTH
10x20x1 AIRx HEALTH Air Filter
AIRx · 10x20x1 · MERV 13
Replaces 1 part
12x12x1-ALLERGY
12x12x1 AIRx ALLERGY Air Filter, 4-Pack
AIRx · 12x12x1 · MERV 11
Replaces 1 part
12x12x1-ALLERGY
12x12x1 AIRx ALLERGY Air Filter
AIRx · 12x12x1 · MERV 11
Replaces 1 part
12x12x1-DUST
12x12x1 AIRx DUST Air Filter, 4-Pack
AIRx · 12x12x1 · MERV 8
Replaces 1 part
12x12x1-DUST
12x12x1 AIRx DUST Air Filter
AIRx · 12x12x1 · MERV 8
Replaces 1 part
12x12x1-HEALTH
12x12x1 AIRx HEALTH Air Filter, 4-Pack
AIRx · 12x12x1 · MERV 13
Replaces 1 part
12x12x1-HEALTH
12x12x1 AIRx HEALTH Air Filter
AIRx · 12x12x1 · MERV 13
Replaces 1 part
3856-1212LRG-2
12" X 12" X 1" Lifetime Permanent Washable Filter, 2-Pack
Permatron · 12x12x1
3856-1220LRG-2
12" X 20" X 1" Lifetime Permanent Washable Filter, 2-Pack
Permatron · 12x20x1
FG25x25x2
Fiberglass 25" X 25" X 2" Panel Filter
CA, Inc. · 25x25x1 · MERV 4