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 26% off
Best Choice1
Aprilaire9.8Exceptional
AprilAire 213 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 20x25x4 Air Filter (Pack of 2)
15% Off-
is discontinued by manufacturer:No
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product dimensions:25 x 4 x 20 inches; 3.44 Pounds
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asin:B00UOXMCBI
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date first available:June 13, 2012
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item model number:213
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Value for Money2
Aprilaire9.7Exceptional
AprilAire 410 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 16x25x4 Air Filter (Pack of 2)
17% Off-
is discontinued by manufacturer:No
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product dimensions:25 x 4 x 16 inches 2.9 Pounds
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asin:B00UOXMC8G
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date first available:July 5, 2011
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item model number:410 A2
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3
Filtrete9.6Exceptional
Filtrete 16x25x4 Air Filter MERV 11, MPR 1000 Micro Allergen Defense 2-Pack, Fits Lennox & Honeywell, AC Furnace HVAC Filters for Home, Pleated Electrostatic (Actual Size 15.88x24.56x4.31 in)
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is discontinued by manufacturer:N/A
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product dimensions:‎25 x 16 x 4 inches
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asin:B09RQCMR5V
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date first available:February 3, 2022
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item model number:‎NADP01-2PK-1E
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4
Filtrete9.4Excellent
Filtrete 16x25x1 Air Filter, MERV 11, MPR 1000, Allergens & Pet Dander, 3-Month AC and Furnace Filters, Cleaner Air, Reliable Airflow, 4 HVAC Filters (Actual Size 15.68 x 24.68 x 0.81 in)
26% Off-
is discontinued by manufacturer:‎No
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product dimensions:‎24.69 x 0.81 x 15.69 inches
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asin:B005GZ89WU
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date first available:August 12, 2011
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item model number:‎9801-4
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5
Filtrete9.1Excellent
Filtrete 16x25x4 Air Filter MERV 12, MPR 1550 Certified Asthma & Allergy Friendly 2-Pack, Fits Lennox & Honeywell, AC Furnace HVAC Filters, Pleated Electrostatic (Actual Size 15.88x24.56x4.31 in)
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is discontinued by manufacturer:N/A
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product dimensions: 24.56 x 15.88 x 4.31 inches
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asin:B09RQBQ776
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date first available:February 3, 2022
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item model number: MPR 1550
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6
Filtrete8.9Very Good
Filtrete 16x25x4 Air Filter MERV 11, MPR 1000 Micro Allergen Defense 4-Pack, Fits Lennox & Honeywell, AC Furnace HVAC Filters for Home, Pleated Electrostatic (Actual Size 15.88 x 24.56 x 4.31 in)
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is discontinued by manufacturer:N/A
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product dimensions: 24.56 x 4.31 x 15.88 inches
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asin:B01N5GYRTF
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date first available:December 19, 2016
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item model number: NADP01-4IN-4
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7
Aprilaire8.6Very Good
Genuine AprilAire 413 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 16x25x4 Air Filter (Pack of 1)
18% Off-
is discontinued by manufacturer:No
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product dimensions:4 x 25 x 16 inches; 1 Pounds
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asin:B0040VOEKW
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date first available:March 2, 2007
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item model number:413
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8
Filterbuy8.3Good
Filterbuy 20x25x5 Air Filter MERV 8 Essential Dust & 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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is discontinued by manufacturer: No
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product dimensions: 19.88 x 24.75 x 4.38 inches
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asin:B00NVF51ZK
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date first available:September 24, 2014
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item model number: HRF20x25x5M8 CARpk2
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9
Aprilaire8.2Good
AprilAire 210 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 11, Clean Air & Dust, 20x25x4 Air Filter (Pack of 1)
10% Off-
is discontinued by manufacturer:No
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product dimensions:25 x 4 x 20 inches; 1 Pounds
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asin:B005AIN8YW
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date first available:February 19, 2011
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item model number:210
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10
Filterbuy8.1Good
Filterbuy 16x25x4 Air Filter MERV 8 Essential Dust & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement (Actual Size: 15.50 x 24.50 x 3.63)
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is discontinued by manufacturer: No
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product dimensions: 15.38 x 24.38 x 3.63 inches
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asin:B00CK04VEE
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date first available:April 27, 2013
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item model number: AFB16x25x4M8pk2
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