20 Best 18x20x1 Air Filter Amazon [2024]

Are you looking for the best 18x20x1 air filter amazon? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 18x20x1 air filter amazon.

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1 Flanders PrecisionAire 84858.011820 18 by 20 by 1 NaturalAire Standard Pleat Air Filter, 12-Pack Flanders PrecisionAire 84858.011820 18 by 20 by 1 NaturalAire Standard Pleat Air Filter, 12-Pack
2 Aerostar 18x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4'x 19... Aerostar 18x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x...
3 AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter Replacement Box of 6,... AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter Replacement Box of...
4 Aerostar 18x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6-Pack (Actual Size: 17 3/4' x... Aerostar 18x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6-Pack (Actual Size: 17 3/4"...
5 AIRx HEALTH 18x20x1 MERV 13 Pleated Air Filter - Made in the USA - Box of 6 AIRx HEALTH 18x20x1 MERV 13 Pleated Air Filter - Made in the USA - Box of 6
6 Nordic Pure 18x20x1 MERV 8 Pleated AC Furnace Air Filters 6 Pack Nordic Pure 18x20x1 MERV 8 Pleated AC Furnace Air Filters 6 Pack
7 Filterbuy 18x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with... Filterbuy 18x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters...
8 AIRx DUST 18x20x1 MERV 8 Pleated Air Filter - Made in the USA - Box of 6 AIRx DUST 18x20x1 MERV 8 Pleated Air Filter - Made in the USA - Box of 6
9 Amazon Basics Merv 11 AC Furnace Air Filter - 20'' x 20'' x 1'', 6-Pack Amazon Basics Merv 11 AC Furnace Air Filter - 20'' x 20'' x 1'', 6-Pack
10 Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4'x 19... Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x...
11 K&N 16x20x1 Air Filter, Merv 11, Washable Air Filter, the Last Furnace Filter You Will Ever Buy,... K&N 16x20x1 Air Filter, Merv 11, Washable Air Filter, the Last Furnace Filter You Will Ever Buy,...
12 Filterbuy 18x20x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver) Filterbuy 18x20x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
13 Filtrete 20x24x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, (exact dimensions 19.81 x... Filtrete 20x24x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, (exact dimensions 19.81...
14 Filtrete 16x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated... Filtrete 16x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month...
15 BISSELL ICONpet Cordless with Tangle Free Brushroll, SmartSeal Filtration, Lightweight Stick Hand... BISSELL ICONpet Cordless with Tangle Free Brushroll, SmartSeal Filtration, Lightweight Stick Hand...
16 Filtrete 20x25x1, AC Furnace Air Filter, MPR 2800, Healthy Living Ultrafine Particle Reduction,... Filtrete 20x25x1, AC Furnace Air Filter, MPR 2800, Healthy Living Ultrafine Particle Reduction,...
17 Filtrete 20x25x1 Furnace Air Filter MPR 1500 MERV 12, Healthy Living Ultra Allergen, 2-Pack (exact... Filtrete 20x25x1 Furnace Air Filter MPR 1500 MERV 12, Healthy Living Ultra Allergen, 2-Pack...
18 Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 4-Pack Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 4-Pack
19 Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters... Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters...
20 Filtrete 20x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions... Filtrete 20x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact...
SaleBestseller No. 1
Flanders PrecisionAire 84858.011820 18 by 20 by 1 NaturalAire Standard Pleat Air Filter, 12-Pack
  • Experience the clean air difference.
  • Pack of 12 quality filters designed for protection of furnace and central air units
  • MERV 8 rating: Removes household dust, pollen, dirt, mold spores and more
  • Pleated media provides large surface area for more effective filtration while keeping airflow resistance low
  • Each filter maintains efficiency for up to 90 days
Bestseller No. 2
Aerostar 18x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x 19...
  • Nominal size: 18x20x1; Actual size 17 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...
  • 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 &...
Bestseller No. 3
AIRx Filters Allergy 18x20x1 Air Filter MERV 11 AC Furnace Pleated Air Filter Replacement Box of 6,...
  • MERV Rated Replacement Air Filter: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) MERV 11 air filter assures the effectiveness of your home...
  • Contaminant Reducing Replacement Air Filter: AIRx Filters 18x20x1 air filter replacement (Actual: 17.50 x 19.50 x 0.75 in) traps 1.0 - 10.0 micron of...
  • High Quality Air Filter Replacement Material: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) air filters are 100% made in the USA using high...
  • Superior Air Filter Replacement Construction And Specs: AIRx Filters 18x20x1 air filter uses electrostatically charged 100% synthetic gradient media...
  • Multi-Pack OEM Air Filter Replacement Compatible: AIRx Filters 18x20x1 MERV 11 air filter can replace and/or comparable with Allergen Defense MPR 1000...
Bestseller No. 4
Aerostar 18x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6-Pack (Actual Size: 17 3/4" x...
  • Nominal size: 18x20x1; Actual size 17 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...
  • 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 &...
SaleBestseller No. 5
AIRx HEALTH 18x20x1 MERV 13 Pleated Air Filter - Made in the USA - Box of 6
  • MERV Rated Replacement Air Filter: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) MERV 13 air filter assures the effectiveness of your home...
  • Contaminant Reducing Replacement Air Filter: AIRx Filters 18x20x1 air filter replacement (Actual: 17.50 x 19.50 x 0.75 in) traps 1.0 - 3.0 micron of...
  • High Quality Air Filter Replacement Material: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) air filters are 100% made in the USA using high...
  • Superior Air Filter Replacement Construction And Specs: AIRx Filters 18x20x1 air filter uses electrostatically charged 100% synthetic gradient media...
  • Multi-Pack OEM Air Filter Replacement Compatible: AIRx Filters 18x20x1 MERV 13 air filter can replace and/or comparable with Healthy Living MPR 1500...
Bestseller No. 6
Nordic Pure 18x20x1 MERV 8 Pleated AC Furnace Air Filters 6 Pack
  • Nominal Size: 18 x 20 x 1, Actual Size: 17 1/2 x 19 1/2 x 3/4 (17.5 x 19.5 x 0.75)
  • Measure your air filter for the exact size and compare it to our actual size to ensure proper fit.
  • This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently and helps reduce odors
  • Nordic Pure MERV 8 is equivalent to MPR 800
  • Made in the USA
Bestseller No. 7
Filterbuy 18x20x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with...
  • 18x20x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 17.50 x 19.5 x 0.75 inches)
  • MERV 8 (Odor Eliminator) synthetic media (comparable with MPR 600 & FPR 5) protects homes from adverse smells while trapping 90% of airborne particles...
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products...
  • Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
  • All components are manufactured within the United States and designed with recyclable materials
Bestseller No. 8
AIRx DUST 18x20x1 MERV 8 Pleated Air Filter - Made in the USA - Box of 6
  • MERV Rated Replacement Air Filter: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) MERV 8 air filter assures the effectiveness of your home...
  • Contaminant Reducing Replacement Air Filter: AIRx Filters 18x20x1 air filter replacement (Actual: 17.50 x 19.50 x 0.75 in) traps 3.0 - 10.0 micron of...
  • High Quality Air Filter Replacement Material: AIRx Filters 18x20x1 (Actual: 17.50 x 19.50 x 0.75 in) air filters are 100% made in the USA using high...
  • Superior Air Filter Replacement Construction And Specs: AIRx Filters 18x20x1 air filter uses electrostatically charged 100% synthetic gradient media...
  • Multi-Pack OEM Air Filter Replacement Compatible: AIRx Filters 18x20x1 MERV 8 air filter can replace and/or comparable with Allergen Defense MPR 800,...
Bestseller No. 9
Amazon Basics Merv 11 AC Furnace Air Filter - 20'' x 20'' x 1'', 6-Pack
  • AC/Furnace filter for capturing household irritants, improving air quality, and promoting furnace efficiency; 20 x 20 x 1 inch filters, 6-pack
  • Merv 11 rating for residential use; comparable to MPR 1000-1200 and FPR 7
  • Captures allergens between 3-10 microns including lint, dust, and pollen
  • Beverage board frame, wire mesh support, and electrostatically charged synthetic filter material
  • For optimal results change filter every 60 to 90 days
Bestseller No. 10
Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x 19...
  • Nominal size: 18x20x1; Actual size 17 3/4"x 19 3/4" x 3/4"; This MERV 11 filter is comparable with MPR 1000-1200 & FPR 7
  • Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, and smoke
  • 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...
  • 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...
Bestseller No. 11
K&N 16x20x1 Air Filter, Merv 11, Washable Air Filter, the Last Furnace Filter You Will Ever Buy,...
  • The LAST AIR FILTER YOU WILL EVER BUY: Washable furnace filter for long-term home HVAC filter savings
  • SAVE MONEY: Save $30 annually with reusable air filter compared to disposable, one time use filters
  • DIRECT REPLACEMENT: AC filter designed to fit directly into your filter register
  • EASY TO CLEAN: Remove filter, apply K&N HVAC filter cleaner, rinse with low pressure hose, let filter dry, return filter to housing
  • GUARNATEED QUALITY: Premium design and durable construction for excellent air filtration
Bestseller No. 12
Filterbuy 18x20x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
  • 18x20x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 17.50 x 19.5 x 0.75 inches)
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% of airborne particles without...
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products...
  • Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
  • All components are manufactured within the United States and designed with recyclable materials
Bestseller No. 13
Filtrete 20x24x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, (exact dimensions 19.81 x...
  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. 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 and dust mite debris
  • MPR 300 has a rating of MERV 5
  • The higher the MPR, the more microparticles - such as pollen, pet dander and smoke - your filter will capture from the air passing through it
SaleBestseller No. 14
Filtrete 16x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated...
  • MAKE YOUR HOME YOUR SANCTUARY: 2-pack of 3-month pleated 1” Filtrete 16x20x1 MPR 1000 AC Furnace Air Filter helps capture unwanted particles from...
  • DIFFERENT FROM NOMINAL SIZE: Slightly different from the nominal size, this air filter’s exact dimensions are 15.69 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
SaleBestseller No. 15
BISSELL ICONpet Cordless with Tangle Free Brushroll, SmartSeal Filtration, Lightweight Stick Hand...
  • High Performance digital motor spins at up to 420 miles per hour for powerful cordless cleaning performance
  • 22v Lithium ion Battery offers cordless convenience with three cleaning modes
  • Our patented Tangle Free Brush Roll spins up to 3200 RPM, leaving no hair wrap behind and making it the vacuum for pet households
  • The Mess Free Dirt Tank with Clean Slide Technology allows you control the dust and dander to eliminate the clean up after the cleanup
  • Easily converts to a hand or high reach vacuum, so you can clean more spaces with a single, innovative machine
SaleBestseller No. 16
Filtrete 20x25x1, AC Furnace Air Filter, MPR 2800, Healthy Living Ultrafine Particle Reduction,...
  • 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,...
  • 2800 MPR has a rating of MERV 14
  • The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing...
Bestseller No. 17
Filtrete 20x25x1 Furnace Air Filter MPR 1500 MERV 12, Healthy Living Ultra Allergen, 2-Pack (exact...
  • 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,...
  • 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...
SaleBestseller No. 18
Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 4-Pack
  • UNIVERSALLY COMPATIBLE: This air conditioner, furnace and HVAC filter works with almost any brand. It is comparable to the 3M Filtrete MPR 600 Dust &...
  • CREATE A CLEANER ENVIRONMENT: Entrap airborne particles that bring harm to you and your loved ones with our Merv 8 pleated air filters that capture...
  • LONG-LASTING PERFORMANCE: Thanks to the thick build and pleated design, our air conditioner filter offers better capture coverage to trap more...
  • EASY & SIMPLE TO USE: Installing or replacing our air filters for AC units or furnace is as simple as it gets. Simply slide the filter into the air...
  • QUALITY THAT COUNTS: We designed our pleated air filters with more pleats than most retail air filters to enhance airflow and efficiency. Each filter...
SaleBestseller No. 19
Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters...
  • 20x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.50" x 19.50" x 0.75")
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from dust, pollen, and more by trapping 90% of airborne particles without...
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products...
  • Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs
  • All components are manufactured within the United States and designed with recyclable materials
SaleBestseller No. 20
Filtrete 20x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 4-Pack (exact dimensions...
  • 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...

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