10 Best Furnace Air Filters 2021

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

Filtrete 16x25x1 – ⭐ Best Overall Furnace Air Filter

BD01-6PK-2E by Filtrete

  • Dimensions: 24.7 x 0.8 x 15.7 inches
  • Warranty: Limited Warranty
Filtrete 16x25x1
  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC: 3-month pleated 1 inch air filters for your furnace, air conditioner or HVAC system
  • DESIGNED WITH EXCLUSIVE: Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
  • Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores
  • MPR 300 has a rating of MERV 5
  • The higher the MPR, the more micro particles-such as pollen, pet dander, smoke, bacteria and viruses-your filter will capture from the air passing through it
  • Change filter at least every 90 days for optimal performance of your heating & cooling system or HVAC system
  • A dirty filter will slow down air flow and make the system work harder to keep you warm or cool -- wasting energy. Sign-up for a filter change reminder program that works for you
  • For residential use only
  • Create a change countdown in the Filtrete Smart app. Simply use the app to scan the barcode on your filter’s packaging, then choose 30, 60 or 90 days for your replacement countdown. When the lifespan is up, you’ll get a notification to change your filter

AIRx Filters Allergy 16x25x1 Air Filter MERV 11 AC Furnace

ALLERGY-162501-6 by AIRX FILTERS WICKED CLEAN AIR.

  • Weight: 0.6 pounds
  • Dimensions: 15.5 x 24.5 x 0.8 inches
AIRx Filters Allergy 16x25x1 Air Filter MERV 11 AC Furnace
  • MERV RATED REPLACEMENT AIR FILTER: AIRx Filters 16x25x1 (Actual: 15.50 x 24.50 x 0.75 in) MERV 11 air filter assures the effectiveness of your home HVAC system resulting to efficient heating, ventilation and air conditioning
  • CONTAMINANT REDUCING REPLACEMENT AIR FILTER: AIRx Filters 16x25x1 air filter replacement (Actual: 15.50 x 24.50 x 0.75 in) traps 1.0 - 10.0 micron of particles such as lint, dust, pollen, dust mite debris, mold spores, pet dander, smoke, and smog
  • HIGH QUALITY AIR FILTER REPLACEMENT MATERIAL: AIRx Filters 16x25x1 (Actual: 15.50 x 24.50 x 0.75 in) air filters are 100% made in the USA using high quality air filter moisture resistant double-wall beverage board
  • SUPERIOR AIR FILTER REPLACEMENT CONSTRUCTION AND SPECS: AIRx Filters 16x25x1 air filter uses electrostatically charged 100% synthetic gradient media can perform at temperature ranging from 180F (82C) continuous service, peak 225F (107C)
  • MULTI-PACK OEM AIR FILTER REPLACEMENT COMPATIBLE: AIRx Filters 16x25x1 MERV11 air filter can replace and/or comparable with Allergen Defense MPR 1000 1085 1200, Odor Reduction MPR 1200 16x25x1 air filter

Filtrete 16x25x1

UR01-2PK-1E by Filtrete

  • Weight: 1.39 pounds
  • Dimensions: 24.7 x 0.8 x 15.7 inches
  • Warranty: As labelled
Filtrete 16x25x1
  • Helps promote a healthy home by reducing airborne dust, allergens, bacteria & viruses
  • 4x better small bacteria and virus capture {Refers to bacteria and viruses that are less than 1 micron in size}
  • Electrostatically charged to attract and capture microscopic airborne particles
  • Carries a 1500 Microparticle Performance Rating (MPR)
  • Lasts up to 3 months
  • Designed with Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through
  • Captures microscopic particles including: smoke, cough/sneeze debris, bacteria, viruses, and large particles like lint, dust and pollen.
  • Electrostatic air filter with Microparticle Performance Rating 1500
  • 3 times better at small particle capture compared to non-electrostatic pleated filters for the capture of 0.3 to 1.0 micron particles.

Filtrete 16x25x1 – 💲 Best Budget Furnace Air Filter

AD01-2PK-6E by Filtrete

  • Weight: 1 pounds
  • Dimensions: 16.4 x 26 x 2.5 inches
  • Warranty: This 3M product will be free from defects in material and manufacture. If this 3M product is defective, your exclusive remedy shall be, at 3M's option, replacement of the 3M product or refund of the purchase price of the 3M product. This warranty gives yo
Filtrete 16x25x1
  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system
  • DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
  • ATTRACTS AND CAPTURES particles such as lint, pollen, dust, pet dander, smoke and smog
  • 1000 MPR has a rating of MERV 11
  • The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it
  • FIND YOUR SIZE: 1000 MPR available in 4in. , 4in. slim fit and 5in. thick air filters
  • FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1 in. filters, and at least every 12 months for 4 in. and 5 in. filters
  • A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program that works for you!
  • FOR RESIDENTIAL use only
  • CREATE A CHANGE COUNTDOWN in the Filtrete Smart app. Simply use the app to scan the barcode on your filter’s packaging, then choose 30, 60 or 90 days for your replacement countdown. When the lifespan is up, you’ll get a notification to change your filter

Aerostar Clean House 16x25x1 MERV 8 Pleated Air Filter

16x25x1 MERV 8 by Aerostar

  • Release date: 07/26/2017
  • Color: White
  • Dimensions: 24.5 x 0.8 x 15.5 inches
Aerostar Clean House 16x25x1 MERV 8 Pleated Air Filter
  • CHECK YOUR FIT - Nominal size: 16x25x1; Actual size 15 3/4"x 23 3/4" x 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.
  • SUPERIOR FILTRATION EFFICIENCY - Aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, dust mites, mold spores, pollen, pet dander, and dust.
  • IMPROVE INDOOR AIR QUALITY - Protect your family and loved ones with clean indoor air quality at home. Aerostar filters are a simple to install and cost-effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms.
  • HIGH PERFORMING - 100% synthetic electrostatic media for high efficiency with low air flow resistance. For best results, change your filters every 60 to 90 days during normal times of year but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest.
  • MADE IN THE USA - Aerostar filters are manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions for residential, commercial and industrial applications.

Filtrete 16x25x1 – 👑 Premium Pick

EA01-6PK-2E by Filtrete

  • Color: White
  • Dimensions: 24.7 x 0.8 x 15.7 inches
  • Warranty: Limited Warranty
Filtrete 16x25x1
  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system
  • DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
  • ATTRACTS AND CAPTURES microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses - and large particles, including lint, household dust and pollen
  • 2200 MPR has a rating of MERV 13
  • The higher the MPR, the more microparticles - such as pollen, pet dander, smoke, bacteria and viruses - your filter will capture from the air passing through it
  • 69% SMALL PARTICLE CAPTURE, like bacteria and particles that carry viruses ( % captured is based on ASHRAE 52.2 testing for 0.3 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing)
  • CERTIFIED as asthma & allergy friendly (As outlined in report ASCR: 1246-01)
  • FIND YOUR SIZE: 2200 MPR available in 4 in. , 4 in. slim fit and 5 in. thick air filters
  • FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1in. filters, and at least every 12 months for 4 in. and 5 in. filters
  • A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Sign-up for a filter change reminder program that works for you!

Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters

20x25x4 (3 5/8) by Nordic Pure

  • Weight: 3.52 pounds
  • Dimensions: 24.5 x 3.6 x 19.5 inches
Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters
  • Actual Size: 19 1/2 x 24 1/2 x 3 5/8 (19. 5 x 24. 5 x 3. 63)
  • Attracts indoor allergens, dust, pollen and other airborne contaminants.
  • Hypoallergenic and pleated electrostatic filter material. Lead/Handling Time - 5
  • Nordic Pure recommends changing 4" air filters every 3-6 months
  • Proudly Made in the USA

Filtrete 14x24x1

UT23-2PK-1E by Filtrete

  • Weight: 0.85 pounds
  • Dimensions: 24 x 14 x 1 inches
  • Warranty: Limited Warranty
Filtrete 14x24x1
  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system
  • DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through
  • ATTRACTS AND CAPTURES microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses--and large particles, including lint, household dust and pollen
  • 1900 MPR has a rating of MERV 13
  • The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it
  • 62% SMALL PARTICLE CAPTURE, like bacteria and particles that carry viruses ( % captured is based on ASHRAE 52.2 testing for 0.3 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing)
  • CERTIFIED as asthma & allergy friendly (As outlined in report ASCR: 1246-01)
  • FIND YOUR SIZE: 1900 MPR available in 4 in. , 4 in. slim fit and 5 in. thick air filters
  • FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1 in. filters, and at least every 12 months for 4in. and 5in. Filters
  • A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Sign-up for a filter change reminder program that works for you!
  • Designed with Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through
  • Captures micro-particles including: PM 2.5 pollution, smoke, cough/sneeze debris, bacteria, viruses, and large particles like lint, dust and pollen
  • Electrostatic air filter with Microparticle Performance Rating 1900
  • 4 times better small particle capture compared to non-electrostatic pleated filters for the capture of 0.3 to 1.0 micron particles.
  • Lasts up to 3 months

FilterBuy 16x25x1

AFB16x25x1M8pk4 by FilterBuy

  • Color: MERV 8
FilterBuy 16x25x1
  • 16x25x1 MERV 8 Pleated Air Filter for AC HVAC or Furnace (Pack of 4 Filters). AFB Silver MERV 8, comparable with MPR 300 / 600 (clean living and dust & pollen).
  • MADE IN THE USA: Manufactured by FilterBuy in the USA using 100% American made components.
  • TRAPS 90% OF AIRBORNE PARTICLES: Say goodbye to dust, debris, lint, pollen, and pet dander. Say hello to better indoor air quality!
  • LONG-LASTING: Designed to last up to 3 months. Ideal for residential and commercial use.
  • HIGH QUALITY: Filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Synthetic media provides significantly higher particulate efficiency than standard cotton media.

FilterBuy 20x20x1

AFB20x20x1M8pk4 by FilterBuy

  • Release date: 03/08/2018
  • Color: MERV 8
  • Weight: 1.8 pounds
  • Dimensions: 19.5 x 3.5 x 19.5 inches
FilterBuy 20x20x1
  • 20x20x1 MERV 8 Pleated Air Filter for AC HVAC or Furnace (Pack of 4 Filters). AFB Silver MERV 8, comparable with MPR 300 / 600 (clean living and dust & pollen).
  • MADE IN THE USA: Manufactured by FilterBuy in the USA using 100% American made components.
  • TRAPS 90% OF AIRBORNE PARTICLES: Say goodbye to dust, debris, lint, pollen, and pet dander. Say hello to better indoor air quality!
  • LONG-LASTING: Designed to last up to 3 months. Ideal for residential and commercial use.
  • HIGH QUALITY: Filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Synthetic media provides significantly higher particulate efficiency than standard cotton media.

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