Best 18X20X1 Air Filter

Trusted products are abundant on the market. Customers often find it difficult to select the appropriate product. To help them with that process, we have listed the Top 20 Best 18X20X1 Air Filter , which will help them select the best item for their specific needs.

Bestseller No. 1
Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 4-Pack
  • ENHANCED AIR FILTRATION: Our 18x20x1 air filters are made using an advanced pleated technology that offers more air coverage, better particle capture performance and helps extend the life of your furnace, air conditioner, or HVAC system. Our pleats are designed with wire backed synthetic media. Our 18x20x1 air filters are also made using high quality CNK coated beverage boards.
  • NEVER WORRY ABOUT YOUR AIR AGAIN: Nobody wants to think of the air they are breathing. Therefore the most prestigious accomplishment a filter can make is to ensure that you are not worrying about the purity of your air. Our Crisp 18x20x1 MERV 8 furnace filters are the ideal choice for anyone wanting clean, crisp air in their home. Our MERV 8 air filters trap debris, allergens such as pollen, and dust- so you only breathe pure and crisp air.
  • TOP TIER PERFORMANCE: Utilizing a thicker build and a more pleat-heavy design than most retail air filters, our air conditioner filter offers enhanced airflow and efficiency, better capture coverage, (traps the unwanted particles) AND provides consistent, high performance filtration for up to three months.
  • EASY & SIMPLE TO USE: Installing or replacing our air filters for any AC units or furnace is as simple as it gets. Simply slide the filter into the air filter return of your unit and then breathe easy, knowing your air is secure. To avoid a dip in air quality, change your filters out up to every 90 days. Houses with specific air requirement needs should change the filter more frequently. Our 18x20x1 air filter measures 17 ¾ x 19 ¾ x ¾ in size.
  • THE HIGHEST STANDARDS: Every single one of our air filters is made in the U.S.A. Our filters come in a shrink wrap protective package to avoid the filter touching dust in transit, which is important to ensure the quality of your filters. We understand the importance of keeping your air clean.
Bestseller No. 2
Aerostar 18x20x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x 19 3/4" x 3/4")
  • 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 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
Bestseller No. 3
Aerostar 18x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6-Pack (Actual Size: 17 3/4" x 19 3/4" x 3/4")
  • 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 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
Bestseller No. 4
Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 6-Pack
  • ENHANCED AIR FILTRATION: Our 18x20x1 air filters are made using an advanced pleated technology that offers more air coverage, better particle capture performance and helps extend the life of your furnace, air conditioner, or HVAC system. Our pleats are designed with wire backed synthetic media. Our 18x20x1 air filters are also made using high quality CNK coated beverage boards.
  • NEVER WORRY ABOUT YOUR AIR AGAIN: Nobody wants to think of the air they are breathing. Therefore the most prestigious accomplishment a filter can make is to ensure that you are not worrying about the purity of your air. Our Crisp 18x20x1 MERV 8 furnace filters are the ideal choice for anyone wanting clean, crisp air in their home. Our MERV 8 air filters trap debris, allergens such as pollen, and dust- so you only breathe pure and crisp air.
  • TOP TIER PERFORMANCE: Utilizing a thicker build and a more pleat-heavy design than most retail air filters, our air conditioner filter offers enhanced airflow and efficiency, better capture coverage, (traps the unwanted particles) AND provides consistent, high performance filtration for up to three months.
  • EASY & SIMPLE TO USE: Installing or replacing our air filters for any AC units or furnace is as simple as it gets. Simply slide the filter into the air filter return of your unit and then breathe easy, knowing your air is secure. To avoid a dip in air quality, change your filters out up to every 90 days. Houses with specific air requirement needs should change the filter more frequently. Our 18x20x1 air filter measures 17 ¾ x 19 ¾ x ¾ in size.
  • THE HIGHEST STANDARDS: Every single one of our air filters is made in the U.S.A. Our filters come in a shrink wrap protective package to avoid the filter touching dust in transit, which is important to ensure the quality of your filters. We understand the importance of keeping your air clean.
Bestseller No. 5
Aerostar 18x20x1 MERV 8 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 17 3/4"x 19 3/4" x 3/4")
  • 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 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
Bestseller No. 6
Crisp Filters, 18x20x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 2-Pack
  • ENHANCED AIR FILTRATION: Our 18x20x1 air filters are made using an advanced pleated technology that offers more air coverage, better particle capture performance and helps extend the life of your furnace, air conditioner, or HVAC system. Our pleats are designed with wire backed synthetic media. Our 18x20x1 air filters are also made using high quality CNK coated beverage boards.
  • NEVER WORRY ABOUT YOUR AIR AGAIN: Nobody wants to think of the air they are breathing. Therefore the most prestigious accomplishment a filter can make is to ensure that you are not worrying about the purity of your air. Our Crisp 18x20x1 MERV 8 furnace filters are the ideal choice for anyone wanting clean, crisp air in their home. Our MERV 8 air filters trap debris, allergens such as pollen, and dust- so you only breathe pure and crisp air.
  • TOP TIER PERFORMANCE: Utilizing a thicker build and a more pleat-heavy design than most retail air filters, our air conditioner filter offers enhanced airflow and efficiency, better capture coverage, (traps the unwanted particles) AND provides consistent, high performance filtration for up to three months.
  • EASY & SIMPLE TO USE: Installing or replacing our air filters for any AC units or furnace is as simple as it gets. Simply slide the filter into the air filter return of your unit and then breathe easy, knowing your air is secure. To avoid a dip in air quality, change your filters out up to every 90 days. Houses with specific air requirement needs should change the filter more frequently. Our 18x20x1 air filter measures 17 ¾ x 19 ¾ x ¾ in size.
  • THE HIGHEST STANDARDS: Every single one of our air filters is made in the U.S.A. Our filters come in a shrink wrap protective package to avoid the filter touching dust in transit, which is important to ensure the quality of your filters. We understand the importance of keeping your air clean.
Bestseller No. 7
Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" 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 impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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
Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" 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 impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 9
Nordic Pure 18x20x1 MERV 12 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.
  • Ideal for high efficiency air filtration and will help those with moderate allergies and asthma.
  • Nordic Pure MERV 12 is equivalent to MPR 1500-1900
  • Made in the USA
Bestseller No. 10
Precisionaire 18X20x1 Fbg Furn Filter (Pack Of 12) 1005 Furnace Filters Mounted
  • "PRECISIONAIRE" FIBERGLASS FURNACE FILTER
  • Flat panel
  • Size : 18" X 20" X 1"
  • Disposable furnace filter
  • Merv rating1
Bestseller No. 11
Filterbuy 18x20x1 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" x 19.50" x 0.75")
  • MERV 11 synthetic media (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pets, allergies, and more by trapping 95% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 12
Filterbuy 18x20x1 Air Filter MERV 8 Odor Eliminator (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement with Activated Carbon (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" x 19.50" x 0.75")
  • MERV 8 (Odor Eliminator) synthetic media (comparable with MPR 600 & FPR 5) protects homes from adverse smells while trapping 90% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 13
Arm & Hammer Max Allergen & Odor Reduction 18x18x1 Air and Furnace Filter, MERV 11, 4-Pack
  • Maximum odor reduction unscented pleated air filter
  • Allergen air filter plus enhanced odor reduction
  • Built in carbon granules have large capacity for absorbing odors
  • MERV 11 rating allergen reduction performance
  • Lasts up to 90 days
Bestseller No. 14
Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" 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 impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 15
Precisionaire Furnace Air Filter 18 " X 20 " X 1 " Fiberglass
  • 18 x 20 x 1 in. EZ Flow II Spun Fiberglass Disposable Furnace Filter.
  • Flat Panel, No Metal Media Retainers.
  • Up To MERV Rating 4, 30 Day Filter.
  • Effective Against Dust/Lint.
  • Pack of 12.
Bestseller No. 16
18x20x1, Percisionaire Ez Flow Ii Front Panel Merv 4, 10055.011820, Pack12
  • 18" x 20" x 1". Captures allergens between 3-10 microns including lint, dust, and pollen
  • EZ Flow II spun fiberglass disposable furnace filter
  • Flat panel. Beverage board frame, wire mesh support, and electrostatically charged synthetic filter material
  • No metal media retainers. We designed our pleated air filters with more pleats than most retail air filters to enhance airflow and efficiency.
  • Up to MERV rating 4     This is a standard grade furnace filter of the same type that has been protecting furnaces and central air conditioners around the world for over 50 years.
Bestseller No. 17
Filterbuy 18x20x1 Air Filter MERV 8 Odor Eliminator (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement with Activated Carbon (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" x 19.50" x 0.75")
  • MERV 8 (Odor Eliminator) synthetic media (comparable with MPR 600 & FPR 5) protects homes from adverse smells while trapping 90% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 18
Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense (3-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" 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 impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 19
Filterbuy 18x20x1 Air Filter MERV 13 Optimal Defense (3-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.50 x 19.50 x 0.75 Inches)
  • 18x20x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17.50" x 19.50" x 0.75")
  • MERV 13 synthetic media (comparable with MPR 1500 - 1900 & FPR 10) protects homes from bacteria and more by trapping 98% of airborne particles without impacting air flow
  • High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models
  • 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. 20
18x20x1 MERV 10 (FPR 5-6) Pleated Air Filters By Glasfloss. Box of 6. Actual Size: 17-1/2 x 19-1/2 x 7/8
  • Actual Size: 17-1/2 x 19-1/2 x 7/8 | Nominal Size: 18x20x1
  • Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR 5-6 rating.
  • Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Durable & Long Lasting: Heavy duty frame won't buckle or support growth.
  • Made in the USA. Ideal for residential, commercial, schools, & industrial filtration applications.
  • For optimal performance, recommended to change at least every 3 months.

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