Are you looking for the furnace air filters? Do you know what to consider before buying one? Well, we’ve managed to put together a list of the best furnace air filters for your consideration. You can choose one and use it according to your needs.

In most cases, customers lack knowledge about market conditions, which leads to poor purchasing decisions. Fortunately, you have come to the right place as we will present you with a complete guide on how to select the furnace air filters for you. We have searched for hours and spent a lot of time and effort making sure you get a good return on your hard-earned money.

You can find a quick comparison and a list of the top furnace air filters below if you’re short on time.

Our Premium Picks!

EDITOR’S CHOICE
9.9
Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)

Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)

PREMIUM PICK
9.6
Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)

Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)

PREMIUM CHOICE
9.1
Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″ x 19 3/4″ x 3/4″)

Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4

Best furnace air filters

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EDITOR’S CHOICE

Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)

Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)
9.9
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PREMIUM PICK

Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)

Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)
9.6
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PREMIUM CHOICE

Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4

Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″ x 19 3/4″ x 3/4″)
9.2
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Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4 Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″ x 19 3/4″ x 3/4″)
8.9
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Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31) Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)
8.5
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Filtrete 20x25x5, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 1-Pack (actual dimensions 19.56 x 24.13 x 4.75) Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)
8.1
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Filtrete 20x25x4(SlimFit), AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 4-Pack (actual dimensions 19.5 x 24.5 x 3.75) Filtrete 20x25x4(SlimFit), AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 4-Pack (actual dimensions 19.5 x 24.5 x 3.75)
7.6
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Filtrete 20x25x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 2-Pack (exact dimensions 19.719 x 24.688 x 0.78) Filtrete 20x25x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 2-Pack (exact dimensions 19.719 x 24.688 x 0.78)
7.5
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Filtrete 20x25x1, AC Furnace Air Filter, MPR 2200, Healthy Living Elite Allergen, 6-Pack (exact dimensions 19.69 x 24.69 x 0.78) Filtrete 20x25x1, AC Furnace Air Filter, MPR 2200, Healthy Living Elite Allergen, 6-Pack (exact dimensions 19.69 x 24.69 x 0.78)
7.2
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Aerostar 16x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual size 15 3/4 Aerostar 16x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual size 15 3/4″x 19 3/4″ x 3/4″)
6.9
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Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)

EDITOR’S CHOICE

Specifications:

Filtrete 16x25x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (exact dimensions 15.69 x 24.69 x 0.81)

$46.60  in stock
3 new from $46.60
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • 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

Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)

PREMIUM PICK

Specifications:

Filtrete 16x25x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions 15.69 x 24.69 x 0.81)

$81.85  in stock
3 new from $75.00
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • 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

Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″ x 19 3/4″ x 3/4″)

PREMIUM CHOICE

Specifications:

Aerostar 20x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4" x 19 3/4" x 3/4")

$36.22
$30.99
 in stock
2 new from $30.99
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • Nominal size: 20x20x1; Actual size: 19 3/4" x 19 3/4" x 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.
  • Designed to filter microscopic particles such as lint, dust mites, spores, and pollen
  • Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months
  • 100% synthetic electrostatic media for high efficiency with low air flow resistance
  • Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive

Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″ x 19 3/4″ x 3/4″)

Specifications:

Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4" x 19 3/4" x 3/4")

$55.41
$43.70
 in stock
2 new from $43.70
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • Nominal size: 20x20x1; Actual size: 19 3/4"x 19 3/4" x 3/4"; This MERV 13 filter is comparable with MPR 1500-1900 & FPR 10.
  • Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria
  • Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months
  • 100% synthetic electrostatic media for high efficiency with low air flow resistance
  • Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive

Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)

Specifications:

Filtrete 20x25x4, AC Furnace Air Filter, MPR 1000 DP, Micro Allergen Defense Deep Pleat, 2-Pack (actual dimensions 19.88 x 24.63 x 4.31)

$44.99  in stock
3 new from $44.99
9 used from $40.30
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, air conditioner, or HVAC system
  • Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through
  • Filtrete 1000 MPR (Microparticle Performance Rating) equates to MERV 11
  • 1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters.Material: Synthetic
  • For optimal performance, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters.

Filtrete 20x25x5, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 1-Pack (actual dimensions 19.56 x 24.13 x 4.75)

Specifications:

Filtrete 20x25x5, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 1-Pack (actual dimensions 19.56 x 24.13 x 4.75)

$34.97  in stock
6 new from $34.97
3 used from $26.75
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • 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
  • 1550 MPR has a rating of MERV 12
  • 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

Filtrete 20x25x4(SlimFit), AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 4-Pack (actual dimensions 19.5 x 24.5 x 3.75)

Specifications:

Filtrete 20x25x4(SlimFit), AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 4-Pack (actual dimensions 19.5 x 24.5 x 3.75)

$84.72  in stock
5 new from $84.72
3 used from $73.21
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" 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
  • Tip: The higher the MPR (Microparticle Performance Rating), the more particles the filter captures. Select 2500 or 2800 MPR to also capture ultrafine particles
  • Filtrete 1550 MPR (Microparticle Performance Rating) equates to MERV 12

Filtrete 20x25x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 2-Pack (exact dimensions 19.719 x 24.688 x 0.78)

Specifications:

Filtrete 20x25x1, AC Furnace Air Filter, MPR 1500, Healthy Living Ultra Allergen, 2-Pack (exact dimensions 19.719 x 24.688 x 0.78)

$38.99  in stock
3 new from $38.98
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • 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
  • 1500 MPR has a rating of MERV 12
  • 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

Filtrete 20x25x1, AC Furnace Air Filter, MPR 2200, Healthy Living Elite Allergen, 6-Pack (exact dimensions 19.69 x 24.69 x 0.78)

Specifications:

Filtrete 20x25x1, AC Furnace Air Filter, MPR 2200, Healthy Living Elite Allergen, 6-Pack (exact dimensions 19.69 x 24.69 x 0.78)

$137.81  in stock
7 new from $117.00
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • 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!

Aerostar 16x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual size 15 3/4″x 19 3/4″ x 3/4″)

Specifications:

Aerostar 16x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual size 15 3/4"x 19 3/4" x 3/4")

$37.81
$34.80
 in stock
2 new from $34.80
Free shipping
Amazon.com
as of May 19, 2022 8:47 pm

Features

  • Nominal size: 16x20x1; Actual size 15 3/4"x 19 3/4" x 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.
  • Designed to filter microscopic particles such as lint, dust mites, spores, and pollen
  • Simple to install and a cost-effective step towards a healthier home environment. For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months
  • 100% synthetic electrostatic media for high efficiency with low air flow resistance
  • Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive