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General Furnace Filters

10 Best General Furnace Filters 2025 in the United States

Name: Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)
Brand: Filterbuy
Price: 57.02 USD
Availability: InStock

From leading brands and best sellers available on the web.

EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

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Winner

Filterbuy

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

9.8

score

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EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

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Coldwords

2-pack General Generalaire Humidifier 990-13 Water Pad (View amazon detail page)

9.6

score

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GeneralAire

3-PK ReservePro 4551 (old #4501) 20"x25"x5" Air Filter-Actual Size= 19 5/8" x 24 3/16" x 4 15/16"- 6FM2025

9.3

score

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GeneralAire

GeneralAire AC-1 Replacement Air Filters, 2-Pack

9.0

score

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Curebilee

12758 Filter Replacement Compatible with GeneralAire DPFG12758, AC-1, AC-22, AC-3, Carrier 88NA2506MB01 and Carrier 31MF020/31MF120 or Bryant 902BX Air Cleaner Media, 20x25x5 MERV 11 Filter, 4 Pack

8.7

score

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General Filters

General Filter 1A-25B Standard Fuel Oil Filter, 3/8-Inch

8.5

score

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GeneralAire

GeneralAire Pleated Media filter 12758 General 3-PACK SPECIAL

8.2

score

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HVAC Parts

3 (Three) RF-1 Micron Rated Fuel Oil Filters Fit 1A-25A 77B Eddington S-254 Fed A77 Sears 8055 Sid Harvey XF-25/264 Mitco 264 AutoFlo F-300

7.9

score

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GFRESERVEPRO

3-pk 6FM2025 #4551 Air Filter-20"x 25"x 5"-Genuine Replacement for old #4501-Please Measure Carefully Before OrderingF

7.6

score

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#10

Lytool

2-PK- Generalaire #4368-Replaces Honeywell FC100A1037-20"x 25" x 4.5" Merv 11 Air Filters

7.4

score

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10 Best General Furnace Filters 2025 in the United States

EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

EconoHome 20x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6673), Honeywell (FC100A1037) filters. (Actual size: 19.94 x 24.86 x 4.36 Inches)

2-pack General Generalaire Humidifier 990-13 Water Pad (View amazon detail page)

3-PK ReservePro 4551 (old #4501) 20"x25"x5" Air Filter-Actual Size= 19 5/8" x 24 3/16" x 4 15/16"- 6FM2025

GeneralAire AC-1 Replacement Air Filters, 2-Pack

12758 Filter Replacement Compatible with GeneralAire DPFG12758, AC-1, AC-22, AC-3, Carrier 88NA2506MB01 and Carrier 31MF020/31MF120 or Bryant 902BX Air Cleaner Media, 20x25x5 MERV 11 Filter, 4 Pack

EconoHome 16x25x4 AC Furnace Pleated Air Filter MERV 11 Replacement – Allergen Defense, 2 Pack, Fits Lennox (X6670), Honeywell (FC100A1029) filters. (Actual size: 15.94 x 24.86 x 4.36 Inches)

General Filter 1A-30 FBA_1A-30 Filter Replacement Cartridges

3-PK- Generalaire #4366-Replaces Honeywell FC100A1029-16"x 25" x 4.5" MERV 11 Air.

MERV 11 4001 Filter for GeneralAire 12758 for AC1, AC22, AC3, Carrier 31MF, and Bryant® 902BX

Generalaire 4541 (Old 4511) 16 x 25 x 5 Merv 11 Air Filter- Actual Size= 15 5/8 x 24 3/8 x 4 15/16- 6FM1625-Old 5FM1625

General Filter 1A-25B Standard Fuel Oil Filter, 3/8-Inch

GeneralAire Pleated Media filter 12758 General 3-PACK SPECIAL

3 (Three) RF-1 Micron Rated Fuel Oil Filters Fit 1A-25A 77B Eddington S-254 Fed A77 Sears 8055 Sid Harvey XF-25/264 Mitco 264 AutoFlo F-300

3-pk 6FM2025 #4551 Air Filter-20"x 25"x 5"-Genuine Replacement for old #4501-Please Measure Carefully Before OrderingF

2-PK- Generalaire #4368-Replaces Honeywell FC100A1037-20"x 25" x 4.5" Merv 11 Air Filters

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