Top 10 Best 20x20x1 in 2026

Last Updated - 7/3/2026

🏆Best Choice

Filtrete

Filtrete 20x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2 Pack (Actual Size 19.719 x 19.719 x 0.84 in)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated 1” Filtrete 20x20x1 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment
•DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 19.69 x 19.69 x 0.81
•EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through
•COUNTLESS PARTICLES: With a 1000 MPR and MERV 11 rating, your air filter will help capture many microparticles from the air passing through it
•VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system
•CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
•SUBSCRIBE AND SAVE: On your first order, simply click on Subscribe and Save" to set up your delivery schedule and save up to 10% on your orders

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$23.98

$33.35

-28%

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Simply

Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Universally Compatible: Measuring 20" x 20" x 1", with an actual size of 19.75"x19.75" x 0.75", Simply Filters works with almost any brand. Comparable to 3M Filtrete MPR 600, Filterbuy AFB Silver, and Honey well FPR 5.
•Cleaner Air Everywhere: Our filters capture dust, mold, pet dander, and pollen in homes, offices, schools, hospitals, and commercial spaces, trapping 90% of airborne particles, promoting a healthier living environment with clean and fresh indoor air.
•Advanced Pleated Technology: With a higher pleat count than most retail, our meticulously crafted filters offer superior capture coverage, optimizing airflow and efficiency.
•Long-lasting Filtration & Easy Installation: Enjoy up to 3 months of resilient filtration. Hassle-free replacement for air conditioning units or HVAC systems. Follow airflow arrows and insert into the filter slot for central units or return grilles.
•Made in USA: Our filters are made using 100% American components, including recycled materials, ensuring superior performance and quality. Experience exceptional filtration and support local manufacturing.

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$34.14

$38.97

-12%

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Filterbuy

Filterbuy 20x20x1 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 19.50 x 19.50 x 0.75)

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•UNIVERSAL COMPATIBILITY: 20x20x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 19.50" x 0.75")
•MERV 8 PERFORMANCE: Protect your home or business from pollen, lint, mold, and more with MERV 8 synthetic media (comparable with MPR 700 & FPR 5) that captures 90% of dust without restricting air flow
•LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for best results)
•SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures
•MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality you can trust

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$30.96

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Filtrete

Filtrete 20x20x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.69x19.69x0.81 in)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 6-pack of 3-month pleated Filtrete 20x20x1 MPR 300 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment
•DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 19.69 x 19.69 x 0.81
•EXCLUSIVE TECHNOLOGY: Designed with exclusive Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through
•COUNTLESS PARTICLES: With a 300 MPR and MERV 5 rating, your Filtrete Filter will help capture many particles from the air passing through it
•VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system
•CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
•SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$39.99

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Filterbuy

Filterbuy 20x20x1 Air Filter MERV 8 (MPR 700) Dust Defense Replacement (6-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 19.50 x 19.50 x 0.75)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•UNIVERSAL COMPATIBILITY: 20x20x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 19.50" x 0.75")
•MERV 8 PERFORMANCE: Protect your home or business from pollen, lint, mold, and more with MERV 8 synthetic media (comparable with MPR 700 & FPR 5) that captures 90% of dust without restricting air flow
•LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for best results)
•SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures
•MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality you can trust

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$34.23

$38.46

-11%

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Filtrete

Filtrete 20x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 19.69 x 19.69 x 0.81 in)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•MAKE YOUR HOME YOUR SANCTUARY: 4-pack of 3-month pleated Filtrete 20x20x1 MERV 11 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment
•EXCLUSIVE TECHNOLOGY: Designed with Filtrete 3-in-1 technology to pull in and trap unwanted particles, allowing cleaner air to flow through
•COUNTLESS MICROPARTICLES: With a 1000 MPR and MERV 11 rating, your Filtrete Filter will help capture many microparticles from the air passing through it
•CERTIFIED: This furnace filter is CERTIFIED asthma and allergy-friendly (2) and helps capture dust, lint and other allergens in your household air
•CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your filter at least once every 90 days
•VERSATILE USES: Works for changing the air filters in your furnace, air conditioner/heating system or HVAC system
•SMART APP: Use the Filtrete Smart App (iOS or Android) to set 30-, 60- or 90-day reminders to change your air filter
•MOST TRUSTED: Filtrete Brand is North America’s most trusted brand of HVAC Filters, based on 2024 Sago US Brand Health Survey of Residential HVAC Air Filters

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$48.76

$59.75

-18%

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Amazon Basics

Amazon Basics 20x20x1 Air Filter 6 Pack, MERV 11 AC Furnace Filters (Actual Size: 19.75 x 19.75 x .75)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•ENHANCED AIR QUALITY: Merv 11 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home
•IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
•DURABLE CONSTRUCTION: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance
•ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
•CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days

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$38.12

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Filterbuy

Filterbuy 20x20x1 Air Filter MERV 11 (MPR 1200) Allergen Defense Replacement (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters, Made in USA (Actual Size: 19.50 x 19.50 x 0.75)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•UNIVERSAL COMPATIBILITY: 20x20x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 19.50" x 0.75")
•MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
•LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for best results)
•SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures
•MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality you can trust

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$36.83

$40.92

-10%

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Aerostar

Aerostar 20x20x1 MERV 8 - 6 Count - High Efficiency Pleated HVAC, Furnace & Air Conditioner Filters - Removes Dust, Lint, Mold & Allergy-Causing Pollen

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•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 by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive

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$34.18

$39.84

-14%

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Aerostar

Aerostar 20x20x1 MERV 8 - 4 Count - High Efficiency Pleated HVAC, Furnace & Air Conditioner Filters - Removes Dust, Lint, Mold & Allergy-Causing Pollen

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Nominal size: 20x20x1; Actual size: 19 3/4"x19 3/4"x3/4"; 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 by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive

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$27.99

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Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.