Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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10 Best furnace filters of 2026
Save up to 24% off
Best Choice1
Filterbuy9.8Exceptional
Filterbuy 20x25x5 Air Filter MERV 13 Optimal Smoke & Allergy Defense (2-Pack), Pleated HVAC AC Furnace Filters for Honeywell FC100A1037, Lennox X6673, and More (Actual Size: 19.88 x 24.75 x 4.38)
10% Off Limited Time Deal-
color: Platinum
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usage: Commercial/Residential
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pattern: Pleated
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batteries included: No
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item model number: HRF20x25x5M13 CARpk2
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Value for Money2
Filterbuy9.6Exceptional
Filterbuy 16x25x4 Air Filter MERV 13 Optimal Smoke & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.50 x 24.50 x 3.63)
10% Off Limited Time Deal-
color:Blue
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usage:N/A
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pattern:N/A
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batteries included:No
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item model number:AFB16x25x4M13pk2
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3
Filterbuy9.3Excellent
Filterbuy 20x25x5 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Pleated HVAC AC Furnace Filters for Honeywell FC100A1037, Lennox X6673, and More (Actual Size: 19.88 x 24.75 x 4.38)
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color: Gold
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usage: Commercial/Residential
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pattern: Pleated
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batteries included: No
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item model number: HRF20x25x5M11 CARpk2
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4
Filterbuy9.1Excellent
Filterbuy 16x20x4 Air Filter MERV 13 Optimal Smoke & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.50 x 19.50 x 3.63)
10% Off Limited Time Deal-
color: Blue
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usage: Commercial/Residential
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pattern: Pleated
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batteries included: No
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item model number: AFB16x20x4M13pk2
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5
Filterbuy8.8Very Good
Filterbuy 16x25x5 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack), Pleated HVAC AC Furnace Filters for Honeywell FC100A1029, Lennox X6670, and More (Actual Size: 15.75 x 24.75 x 4.38)
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color: Silver
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usage: Commercial/Residential
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pattern: Pleated
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batteries included: No
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item model number: HRF16x25x5M8 AK
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6
BNX8.7Very Good
BNX TruFilter 20x25x1 Air Filter MERV 13 (6-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10
12% Off Limited Time Deal-
color:N/A
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usage:N/A
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pattern:N/A
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batteries included: No
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item model number: BN-M13S-20x25x1-6PP
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7
Filterbuy8.5Good
Filterbuy 16x25x4 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.50 x 24.50 x 3.63)
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color: Silver
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usage: Commercial/Residential
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pattern: Pleated
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batteries included: No
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item model number: AFB16x25x4M8pk2
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8
Filterbuy8.4Good
Filterbuy 16x25x1 Air Filter MERV 11 Superior Pet & Allergy Defense (6-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.50 x 24.50 x 0.75)
10% Off Limited Time Deal-
color:Gold
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usage:N/A
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pattern:N/A
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batteries included:No
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item model number:AFB16x25x1M11pk6
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9
BNX8.3Good
BNX TruFilter 16x25x1 Air Filter MERV 13 (6-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10
24% Off Limited Time Deal-
color:N/A
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usage:N/A
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pattern:N/A
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batteries included: No
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item model number: BN-M13S-16x25x1-6PP
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10
BNX8.2Good
BNX 20x20x1 Air Filter MERV 13 HVAC AC Furnace Dust Pet Allergen 6-Pack
23% Off Limited Time Deal-
color:N/A
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usage:N/A
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pattern:N/A
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batteries included: No
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item model number: BN-M13S-20x20x1-6PP
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