20 Best 21x23x1 Air Filter [2024]

Are you looking for the best 21x23x1 Air Filter? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 21x23x1 Air Filter.

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1 Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (6-Pack, Gold) Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (6-Pack, Gold)
2 Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 6), MERV 10, Pleated, Made in USA Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 6), MERV 10, Pleated, Made in USA
3 Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (3-Pack, Silver) Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (3-Pack, Silver)
4 Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver) Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
5 Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver) Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver)
6 Aerostar 21 1/2x23 1/2x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 21... Aerostar 21 1/2x23 1/2x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size:...
7 Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 4), MERV 10, Pleated, Made in USA Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 4), MERV 10, Pleated, Made in USA
8 Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (4-Pack, Silver) Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (4-Pack, Silver)
9 Accumulair Diamond 21x23x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 pack) Accumulair Diamond 21x23x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 pack)
10 Aerostar 21 1/2x23 5/16x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 21... Aerostar 21 1/2x23 5/16x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size:...
11 Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (2-Pack, Gold) Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (2-Pack, Gold)
12 Aerostar 21 1/2x23 1/2x1 MERV 11, Pleated Air Filter, 21 1/2 x 23 1/2 x 1, Box of 4, Made in The USA Aerostar 21 1/2x23 1/2x1 MERV 11, Pleated Air Filter, 21 1/2 x 23 1/2 x 1, Box of 4, Made in The USA
13 Accumulair® Platinum 21x23x1 (Actual Size) MERV 11 Air Filter/Furnace Filters (6 pack) Accumulair® Platinum 21x23x1 (Actual Size) MERV 11 Air Filter/Furnace Filters (6 pack)
14 Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters... Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters...
15 Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver) Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver)
16 Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver) Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
17 Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (2-Pack, Platinum) Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (2-Pack, Platinum)
18 Accumulair Diamond 17x21x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 Pack) (FD17X21A_6) Accumulair Diamond 17x21x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 Pack) (FD17X21A_6)
19 Filterbuy 20x23x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with... Filterbuy 20x23x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters...
20 Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (4-Pack, Platinum) Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (4-Pack, Platinum)
Bestseller No. 1
Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (6-Pack, Gold)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 inches)
  • MERV 11 synthetic media (comparable with MPR 1000-1200 & FPR 7) protects homes from pets or allergies by trapping 95% 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. 2
Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 6), MERV 10, Pleated, Made in USA
  • MERV 10 with No Increased Resistance Over MERV 8. Instant Upgrade From MERV 7 or MERV 8 Pleated Filters
  • Great For Allergy Sufferers
  • Expanded Metal Backing on Synthetic Media with Heavy Duty Frame That Resists Moisture.
  • Exact Size 21 1/2 x 23 5/16 x 7/8, 21.5 x 23.3125 x .875, Nominal Size 21 1/2 x 23 5/16 x 1
  • Fits listed models of Carrier, Bryant & Payne Air Handlers. See Description Below
Bestseller No. 3
Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (3-Pack, Silver)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 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. 4
Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 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. 5
Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 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. 6
Aerostar 21 1/2x23 1/2x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 21...
  • Nominal Size: 21 1/2 x 23 1/2 x 1, Actual Size: 21 1/2"x23 1/2"x3/4"
  • Comparable to MPR 1500 to 1900 Ultimate Allergen Defense and Honeywell Allergen Elite FPR 10
  • Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, smoke, 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...
Bestseller No. 7
Glasfloss 21-1/2 x 23-5/16 x 1 Air Filters (Case of 4), MERV 10, Pleated, Made in USA
  • MERV 10 with No Increased Resistance Over MERV 8. Instant Upgrade From MERV 7 or MERV 8 Pleated Filters
  • Great For Allergy Sufferers
  • Expanded Metal Backing on Synthetic Media with Heavy Duty Frame That Resists Moisture.
  • Exact Size 21 1/2 x 23 5/16 x 7/8, 21.5 x 23.3125 x .875, Nominal Size 21 1/2 x 23 5/16 x 1”
  • Fits listed models of Carrier, Bryant & Payne Air Handlers, See Description Below
Bestseller No. 8
Filterbuy 21x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (4-Pack, Silver)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 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. 9
Accumulair Diamond 21x23x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 pack)
  • 21x23x1 (Actual Size) MERV 13 - Tested and rated according to ASHRAE Standard 52.2
  • Tribo-Electric synthetic media provides high filtration efficiency, low air resistance, and is hydrophobic (does not absorb moisture)
  • Enhances indoor air quality for up to 3 months
  • Captures up to 98% or more of airborne contaminants such as dust, lint, dust mite debris, cement dust, lead dust, standing dust, insecticide dust,...
  • Typically ideal for homes with pets, restaurants, hospital/healthcare offices, superior commercial buildings, superior residential buildings, and...
Bestseller No. 10
Aerostar 21 1/2x23 5/16x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 21...
  • Nominal Size: 21-1/2 x 23-5/16 x 1, Actual Size: 21-1/2"x23-5/16"x3/4"
  • Comparable to MPR 1500 to 1900 Ultimate Allergen Defense and Honeywell Allergen Elite FPR 10
  • Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, fine dust, smoke, 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...
Bestseller No. 11
Filterbuy 21x23x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters (2-Pack, Gold)
  • 21x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 21.00 x 23.00 x 1.00 inches)
  • MERV 11 synthetic media (comparable with MPR 1000-1200 & FPR 7) protects homes from pets or allergies by trapping 95% 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. 12
Aerostar 21 1/2x23 1/2x1 MERV 11, Pleated Air Filter, 21 1/2 x 23 1/2 x 1, Box of 4, Made in The USA
  • Nominal: 21 1/2 x 23 1/2 x 1, Size: 21 1/2"x23 1/2"x3/4" 21 1/2x23 1/2x1, AC Furnace Air Filter
  • Comparable to MPR 1000 to 1200 Micro Allergen Defense
  • Comparable to Honeywell Allergen Plus FPR 7
  • Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, dust, and smoke.
  • Change frequency 60-90 days, Made in the USA.
Bestseller No. 13
Accumulair® Platinum 21x23x1 (Actual Size) MERV 11 Air Filter/Furnace Filters (6 pack)
  • 21x23x1 (Actual Size) MERV 11 - Tested and rated according to ASHRAE Standard 52.2
  • Tribo-Electric synthetic media provides high filtration efficiency, low air resistance, and is hydrophobic (does not absorb moisture)
  • Enhance air quality for up to 3 months
  • Captures up to 94% or more of airborne contaminants such as dust, lint, dust mite debris, cement dust, lead dust, standing dust, small fibers, pet...
  • Typically ideal for homes with pets, restaurants, superior commercial buildings, superior residential buildings, and workplaces.
Bestseller No. 14
Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters...
  • 20x23x1 replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.50" x 22.50" 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
Bestseller No. 15
Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (6-Pack, Silver)
  • 20x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 19.50 x 22.50 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. 16
Filterbuy 20x23x1 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)
  • 20x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 19.50 x 22.50 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. 17
Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (2-Pack, Platinum)
  • 20x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 19.50 x 22.50 x 0.75 inches)
  • MERV 13 synthetic media (comparable with MPR 1500-1900 & FPR 10) protects homes optimally by trapping 98% of airborne particles without impacting air...
  • 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. 18
Accumulair Diamond 17x21x1 (Actual Size) MERV 13 Air Filter/Furnace Filters (6 Pack) (FD17X21A_6)
  • 17x21x1 (Actual Size) MERV 13 - Tested and rated according to ASHRAE Standard 52.2
  • Tribo-Electric synthetic media provides high filtration efficiency, low air resistance, and is hydrophobic (does not absorb moisture)
  • Enhances indoor air quality for up to 3 months
  • Captures up to 98% or more of airborne contaminants such as dust, lint, dust mite debris, cement dust, lead dust, standing dust, insecticide dust,...
  • Typically ideal for homes with pets, restaurants, hospital/healthcare offices, superior commercial buildings, superior residential buildings, and...
Bestseller No. 19
Filterbuy 20x23x1 Air Filter MERV 8 (Allergen Odor Eliminator), Pleated HVAC AC Furnace Filters with...
  • 20x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 19.50 x 22.50 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. 20
Filterbuy 20x23x1 Air Filter MERV 13, Pleated HVAC AC Furnace Filters (4-Pack, Platinum)
  • 20x23x1 replacement air filters for your furnace, air conditioner, or HVAC system (actual size: 19.50 x 22.50 x 0.75 inches)
  • MERV 13 synthetic media (comparable with MPR 1500-1900 & FPR 10) protects homes optimally by trapping 98% of airborne particles without impacting air...
  • 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

Having trouble finding a great 21x23x1 Air Filter?

This problem is well understood by us because we have gone through the entire 21x23x1 Air Filter research process ourselves, which is why we have put together a comprehensive list of the best 21x23x1 Air Filters available in the market today.

After hours of searching and using all the models on the market, we have found the best 21x23x1 Air Filter for 2023. See our ranking below!

How Do You Buy The Best 21x23x1 Air Filter?

Do you get stressed out thinking about shopping for a great 21x23x1 Air Filter? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching 21x23x1 Air Filter, which is why we have assembled a comprehensive list of the greatest 21x23x1 Air Filter available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 21x23x1 Air Filter that you consider buying. Your questions might include the following:

  • Is it worth buying an 21x23x1 Air Filter?
  • What benefits are there with buying an 21x23x1 Air Filter?
  • What factors deserve consideration when shopping for an effective 21x23x1 Air Filter?
  • Why is it crucial to invest in any 21x23x1 Air Filter, much less the best one?
  • Which 21x23x1 Air Filter are good in the current market?
  • Where can you find information like this about 21x23x1 Air Filter?

We’re convinced that you likely have far more questions than just these regarding 21x23x1 Air Filter, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 21x23x1 Air Filter, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 21x23x1 Air Filter. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 21x23x1 Air Filter buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 21x23x1 Air Filter currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 21x23x1 Air Filter has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 21x23x1 Air Filter?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 21x23x1 Air Filter.
  5. Customer Ratings: Number ratings grade 21x23x1 Air Filter objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 21x23x1 Air Filter.
  7. Product Quality: You don’t always get what you pay for with an 21x23x1 Air Filter, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 21x23x1 Air Filter is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining 21x23x1 Air Filter information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 21x23x1 Air Filter is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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