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🚚 Free Shipping | Top-Tier HVAC Filters | 5⭐ Trusted!
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20x20x1 HVAC, Furnace and AC Replacement Air Filters

Optimize your HVAC system with our superior 20x20x1 furnace and AC filters. Perfect for both residential and commercial settings, these filters from leading brands offer outstanding air filtration, improving air quality and system longevity. Shop our 20x20x1 filters today.

Filtros

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$ 59.99 - $ 59.99
$ 59.99
$ 59.99 - $ 59.99
$ 59.99

Filtros EZ Flow II 20x20x1 10055.012020 (12 filtros)

Construcción resistente El marco del filtro EZ Flow II está hecho de aglomerado pesado en un diseño de una sola pieza que elimina la separación d...

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$ 59.99 - $ 59.99
$ 59.99
$ 59.99 - $ 59.99
$ 59.99
Agotado
$ 88.99 - $ 88.99
$ 88.99
$ 88.99 - $ 88.99
$ 88.99

Filtros de flujo EZ 20x20x1 10155.012020 (12 filtros)

Este filtro está descatalogado por el fabricante AAF Flanders. El reemplazo recomendado son los filtros EZ Flow II. Haga clic aquí para ser dirig...

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$ 88.99 - $ 88.99
$ 88.99
$ 88.99 - $ 88.99
$ 88.99
Agotado
$ 114.99 - $ 114.99
$ 114.99
$ 114.99 - $ 114.99
$ 114.99

20x20x1 Nested Glass EZ-Green Filters 10059.012020 (24 Filters)

At RememberTheFilter.com, your trusted authorized dealer for top-tier air filtration solutions, we’re proud to offer the AAF Flanders Nested Glass ...

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$ 114.99 - $ 114.99
$ 114.99
$ 114.99 - $ 114.99
$ 114.99
$ 104.99 - $ 104.99
$ 104.99
$ 104.99 - $ 104.99
$ 104.99

20x20x1 PREpleat LPD MERV 8 Capacidad Estándar 80055.012020 (12 Filtros)

El filtro AAF Flanders PREpleat LPD (baja caída de presión) SC (capacidad estándar) es el filtro plisado MERV 8 de capacidad estándar de resistenc...

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$ 104.99 - $ 104.99
$ 104.99
$ 104.99 - $ 104.99
$ 104.99
20x20x1 NaturalAire Standard MERV 8 Filters (12 pack)
$ 96.99 - $ 96.99
$ 96.99
$ 96.99 - $ 96.99
$ 96.99

Filtros 20x20x1 NaturalAire Standard MERV 8 (paquete de 12)

El filtro de aire NaturalAire Standard elimina muchísimo más partículas potencialmente dañinas en el aire, en comparación con los filtros de aire ...

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$ 96.99 - $ 96.99
$ 96.99
$ 96.99 - $ 96.99
$ 96.99
20x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
$ 70.99 - $ 70.99
$ 70.99
$ 70.99 - $ 70.99
$ 70.99

Filtros MERV de micropartículas NaturalAire 20x20x1 10 (paquete de 12)

El filtro de aire de micropartículas NaturalAire elimina partículas potencialmente dañinas en el aire para mantener el aire de su hogar u oficina ...

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$ 70.99 - $ 70.99
$ 70.99
$ 70.99 - $ 70.99
$ 70.99
$ 112.99 - $ 112.99
$ 112.99
$ 112.99 - $ 112.99
$ 112.99

20x20x1 PREpleat LPD MERV 8 Alta Capacidad 80255.012020 (12 Filtros)

Los filtros de aire de alta capacidad AAF Flanders PREpleat LPD (baja caída de presión) están diseñados para retener polvo, baja caída de presión y...

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$ 112.99 - $ 112.99
$ 112.99
$ 112.99 - $ 112.99
$ 112.99
PerfectPleat HC M8 Filter
$ 97.99 - $ 97.99
$ 97.99
$ 97.99 - $ 97.99
$ 97.99

20X20X1 PerfectPleat High Capacity M8 173-700-011 (12 filters)

PerfectPleat HC M8 The PerfectPleat HC M8 filter is designed to consistently increase efficiency throughout the service life of the filter. The Per...

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$ 97.99 - $ 97.99
$ 97.99
$ 97.99 - $ 97.99
$ 97.99
20x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
$ 140.99 - $ 140.99
$ 140.99
$ 140.99 - $ 140.99
$ 140.99

20x20x1 NaturalAire Microparticle MERV 10 Filters 85156.012020 (12 pack)

The NaturalAire Microparticle air filter removes potentially harmful airborne particles to keep the air in your home or office clean and healthier....

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$ 140.99 - $ 140.99
$ 140.99
$ 140.99 - $ 140.99
$ 140.99
20x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
$ 219.99 - $ 219.99
$ 219.99
$ 219.99 - $ 219.99
$ 219.99

20x20x1 NaturalAire Healthy Ultra MERV 13 Filters 95003.012020 (12 pack)

The NaturalAire MERV 13 air filter removes potentially harmful particles to keep the air in your home or office clean and healthier. This premium r...

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$ 219.99 - $ 219.99
$ 219.99
$ 219.99 - $ 219.99
$ 219.99
PerfectPleat Ultra Filter
$ 106.99 - $ 106.99
$ 106.99
$ 106.99 - $ 106.99
$ 106.99

20x20X1 PerfectPleat Ultra 176-700-001 (12 filters)

PerfectPleat ULTRA The PerfectPleat ULTRA filter is designed to consistently increase efficiency throughout the service life of the filter. The Per...

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$ 106.99 - $ 106.99
$ 106.99
$ 106.99 - $ 106.99
$ 106.99
18-1/8x19-3/8x1 Exact Pleated MERV 8 Filters (12 pack)
Agotado
$ 211.99 - $ 211.99
$ 211.99
$ 211.99 - $ 211.99
$ 211.99

20x20x1 Grille Cut Pleated MERV 8 Filters (12 pack)

20 x 20 x 1 grille replacement pleated filters that have an exact size of 19 1/8 x 19 3/8 x 1. Finding grille cut filters can be a challenging task...

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$ 211.99 - $ 211.99
$ 211.99
$ 211.99 - $ 211.99
$ 211.99
Agotado
$ 146.99 - $ 146.99
$ 146.99
$ 146.99 - $ 146.99
$ 146.99

20x20x1 PREpleat MERV 11 Capacidad Estándar 85655.012020M11 (12 Filtros)

El filtro de panel plisado PREpleat M11 SC permite una mejora significativa en la eficiencia de recolección con respecto a los productos MERV 8 exi...

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$ 146.99 - $ 146.99
$ 146.99
$ 146.99 - $ 146.99
$ 146.99
$ 183.99 - $ 183.99
$ 183.99
$ 183.99 - $ 183.99
$ 183.99

20x20x1 Exact Filters Fiberglass MERV 1-4 (12 pack)

20 x 20 x 1 basic filters in the the exact size of 20 x 20 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leading man...

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$ 183.99 - $ 183.99
$ 183.99
$ 183.99 - $ 183.99
$ 183.99
$ 259.99 - $ 259.99
$ 259.99
$ 259.99 - $ 259.99
$ 259.99

20x20x1 Exact Filters Pleated MERV 13 (12 pack)

20x20x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home or of...

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$ 259.99 - $ 259.99
$ 259.99
$ 259.99 - $ 259.99
$ 259.99
$ 197.99 - $ 197.99
$ 197.99
$ 197.99 - $ 197.99
$ 197.99

Carbón Activado PrePleat (12 Filtros) 81255.012020

Este filtro combina la baja resistencia y la alta capacidad de retención de polvo de un filtro plisado con la capacidad de eliminación de olores de...

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$ 197.99 - $ 197.99
$ 197.99
$ 197.99 - $ 197.99
$ 197.99
$ 211.99 - $ 211.99
$ 211.99
$ 211.99 - $ 211.99
$ 211.99

20x20x1 Filtros Exactos Plisados ​​MERV 8 (paquete de 12)

Filtros plisados ​​de 20 x 20 x 1 en el tamaño exacto de 20 x 20 x 1. ¡Actualice su sistema HVAC con Exact Filters! Dígale adiós a la frustración d...

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$ 211.99 - $ 211.99
$ 211.99
$ 211.99 - $ 211.99
$ 211.99
$ 197.99 - $ 197.99
$ 197.99
$ 197.99 - $ 197.99
$ 197.99

20x20x1 PREpleat MERV 13 Extended Surface 90013.012020 (12 Filters)

The PREpleat M13 pleated filter has a low initial resistance and supports achievement of LEED® credits by significantly improving Indoor Air Qualit...

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$ 197.99 - $ 197.99
$ 197.99
$ 197.99 - $ 197.99
$ 197.99
20x20x1 Koch Multi-Pleat XL8 Standard Capacity MERV 8 102-700-008 (12 Filters)
$ 104.99 - $ 104.99
$ 104.99
$ 104.99 - $ 104.99
$ 104.99

20x20x1 Koch Multi-Pleat XL8 Standard Capacity MERV 8 102-700-008 (12 Filters)

Standard Capacity Extended Surface Pleated Panel Filter Features Upgrade from standard pleated filters MERV 8 and MERV 8...

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$ 104.99 - $ 104.99
$ 104.99
$ 104.99 - $ 104.99
$ 104.99
20x20x1 Koch Disposable Fiberglass Panel 274-200-200 (12 Filters)
$ 60.99 - $ 60.99
$ 60.99
$ 60.99 - $ 60.99
$ 60.99

20x20x1 Koch Disposable Fiberglass Panel 274-200-200 (12 Filters)

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Fiberglass Panel Filters are versatile and suitable for ...

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$ 60.99 - $ 60.99
$ 60.99
$ 60.99 - $ 60.99
$ 60.99
20x20x1 MEGApleat Premium High-Capacity MERV 9 Pleated Filter (12 pack)
$ 234.99 - $ 234.99
$ 234.99
$ 234.99 - $ 234.99
$ 234.99

20x20x1 MEGApleat Premium High-Capacity MERV 9 Pleated Filter (12 pack)

The New Standard in Premium Pleated Filters Introducing the longest-lasting MERV 9 pleated panel filter on the market—the MEGApleat M9. Manufacture...

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$ 234.99 - $ 234.99
$ 234.99
$ 234.99 - $ 234.99
$ 234.99
$ 103.68 - $ 103.68
$ 103.68
$ 103.68 - $ 103.68
$ 103.68

20x20x1 Koch Multi-Pleat XL8 MERV 8 High Capacity 102-701-008 (12 Filters)

Multi-Pleat XL8 MERV 8 Extended Surface Pleated Panel Filters with Mechanical Media Upgrade from standard pleated fi...

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$ 103.68 - $ 103.68
$ 103.68
$ 103.68 - $ 103.68
$ 103.68
$ 235.99 - $ 235.99
$ 235.99
$ 235.99 - $ 235.99
$ 235.99

20x20x1 Exact Filters Pleated MERV 11 (12 pack)

20x20x1 Upgrade your HVAC system with Exact Filters! Say goodbye to the frustration of finding the right fit for your furnace, AC, heat pump, or HV...

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$ 235.99 - $ 235.99
$ 235.99
$ 235.99 - $ 235.99
$ 235.99
$ 113.76 - $ 113.76
$ 113.76
$ 113.76 - $ 113.76
$ 113.76

20x20x1 Koch Multi-Pleat XL10 MERV 10 High Capacity 102-390-008 (12 Filters)

Multi-Pleat XL10-HC Upgrade from standard pleated filter MERV 10 efficiency Low resistance to airflow The Koch Multi-Pleat XL10-HC is a medium ...

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$ 113.76 - $ 113.76
$ 113.76
$ 113.76 - $ 113.76
$ 113.76

Your Trusted Source For 20x20x1 Filters

We offer a complete selection of high-performance 20x20x1 HVAC filters. Whether you're replacing filters in your home, office, or commercial HVAC system, you'll find trusted options in MERV 1–13, including pleated, fiberglass, washable, and specialty filters.

All 20x20x1 filters are made in the USA and sourced from leading manufacturers like AAF Flanders and Koch Filter. Choose from standard and custom sizes to ensure a proper fit for your system—and enjoy clean air backed by over 50 years of HVAC experience.

Filter Fit Guarantee™

Have concerns about ordering 20x20x1 filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

We will ship your 20x20x1 filters direct to your door, for free! All orders in the domestic U.S over $50.

Highly Rated 20x20x1 Filters

20x20x1 HVAC, Furnace and AC Replacement Air Filters from leading manufactuerers.

Have questions about 20x20x1 Filters?

What are 20x20x1 filters designed for?

20x20x1 are designed to capture airborne particles and improve system performance in a wide range of HVAC and air filtration applications.

How do I know if 20x20x1 are right for my system?

The best way to determine if 20x20x1 are right for your system is to check your current filter specs, system requirements, or reach out to our team—we’re happy to help you choose the correct option.

Are 20x20x1 filters used in residential or commercial systems?

20x20x1 can be used in a variety of applications depending on system compatibility. Some are ideal for homes, while others are built for commercial, industrial, or specialized environments.

How often should 20x20x1 filters be replaced or maintained?

Replacement schedules for 20x20x1 filters vary based on environment, usage, and filter type. Always follow manufacturer guidelines or consult your facility manager or HVAC technician for best results.

What efficiency levels are available in 20x20x1?

20x20x1 filters are available in a range of filtration levels—from basic to high-efficiency—based on your air quality goals and system requirements.

Are your 20x20x1 filters made in the USA?

Most of our 20x20x1 replacements are proudly made in the USA by trusted manufacturers known for quality and performance.

What makes RememberTheFilter.com a trusted source for 20x20x1 filters?

With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality 20x20x1 replacement filter from leading brands—backed by real expertise and personalized support.

What MERV Rating Is Right for You?

MERV (Minimum Efficiency Reporting Value) measures how well an air filter captures particles. A higher number means better filtration—but it must still be compatible with your HVAC system. Here's a breakdown to help you choose the right filter for your home or business.

MERV 1–4

Basic protection. Captures larger particles like dust, lint, and pollen. Minimal airflow resistance. Best for older systems or basic residential use.

✔ Highest airflow
✘ Does not trap fine particles

MERV 8

Great balance of airflow and filtration. Captures mold spores, dust mites, pet dander, and pollen. Most common choice for residential HVAC systems.

✔ Good airflow
✔ Effective for everyday air quality needs

MERV 10

Enhanced dust-holding capacity and improved particle removal compared to MERV 8. Traps finer particles like mold spores, hair spray, and fabric fibers.

✔ More efficient than MERV 8
✔ Still maintains strong airflow

MERV 11

Captures smaller particles like auto emissions, smoke, and some airborne bacteria. Ideal for homes with pets or allergy concerns. Moderate impact on airflow.

✔ Great for allergies
✘ May reduce airflow in older systems

MERV 13

Highest residential-grade filtration. Captures airborne bacteria, tobacco smoke, and fine particles. Recommended for asthma, smoke exposure, or medical-grade needs.

✔ Best indoor air quality
✘ Not suitable for all systems without airflow evaluation

How to Measure HVAC Filters

To find the correct replacement, measure the length, width, and depth of your existing filter. Most filters are labeled with a nominal size (like 16x24x1), which is a rounded number—actual measurements are often slightly smaller. Accurate sizing ensures a proper fit and helps maintain airflow efficiency.

How to Measure HVAC Filter

Step 1: Remove Old Filter

Turn off your system and remove the existing filter. Look for printed dimensions on the frame—this is usually the nominal size.

Step 2: Measure Actual Size

Use a tape measure to get exact dimensions (length × width × depth). Round down to the nearest 1/8" if needed—example: 15-5/8" × 23-5/8" × 3/4".

Step 3: Match or Order Custom

If your measurements don’t match a standard size, we offer custom filters made to your exact dimensions.

Why Trust RememberTheFilter.com?

With nearly 20 years online and over 50 years of combined HVAC filter experience, we’re more than just a retailer—we’re filtration experts. As a proud member of the National Air Filtration Association (NAFA), we serve residential, commercial, and government customers across the U.S. Our filters are made in America and sourced from leading manufacturers like AAF Flanders, Koch Filter, and more.

We believe in clean air, fair prices, and helping people—not algorithms.

  • ✅ Nearly 20 years online helping homeowners and businesses nationwide
  • ✅ 50+ years of combined HVAC filtration experience
  • ✅ Member of NAFA – National Air Filtration Association
  • ✅ Made in the USA – filters from AAF Flanders, Koch, and more
  • ✅ Exact Filters® – custom built to your specs, down to 1/8"
  • ✅ Trusted by schools, clinics, and commercial buildings across the U.S.

Need help?

Our customer service team is here to help you with any questions or concerns.

We're committed to providing excellent support.
+1 (866) 469-8556 support@rememberthefilter.com Text us

Phone Support Hours: Mon-Fri 8AM-5PM PDT

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