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20x25x1 Air Filters

20x25x1 is one of the most common return-air filter sizes in US homes.

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PuroAir

PuroAir MegaFilter 20x25x1 – MERV 13 Activated Carbon 3-Layer HVAC Filter (2-Pack)

$90.66

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Filtrete

Filtrete 20x25x1 Air Filter – MERV 12, MPR 1500 | Allergens, Bacteria & Viruses | 6-Pack (Actual Size 19.62 x 24.62 x 0.78 in)

$129.02

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BNX TruFilter 20x25x1 pack front view for easy replacement

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BNX

BNX TruFilter 20x25x1 MERV 8 Air Filter – 12-Pack, Made in USA

$97.78

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Filtrete

Filtrete 20x25x1 Air Filter – MERV 11, MPR 1000 | Allergens & Pet Dander, 2-Pack (Actual Size 19.68 x 24.68 x 0.81 in)

$33.13

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PuroAir

PuroAir MegaFilter 20x25x1 – MERV 13 + Activated Carbon, 4-Pack

$131.76

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Filtrete

Filtrete 20x25x1 Air Filter MERV 14, MPR 2800 – 2 Pack (Actual Size 24.81 x 19.81 x 0.81 in) | 3M Pleated HVAC Filter

$91.35

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Filtrete

Filtrete 20x25x1 Air Filter MERV 13 MPR 1900 – Allergens, Bacteria & Viruses | 4-Pack, 3-Month Replacement

$86.44

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Filtrete

Filtrete 20x25x1 Air Filter – MPR 700, MERV 8, 12-Pack (Actual Size 19.69 x 24.69 x 0.81 in)

$91.43

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Filtrete

Filtrete 20x25x1 Air Filter – MERV 11, MPR 1000, 6-Pack, Allergens & Pet Dander, 3-Month Replacement (Actual Size 19.68 x 24.68 x 0.81 in)

$97.51

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Filtrete

Filtrete 20x25x1 AC Furnace Filter – MPR 700, MERV 8, 3-Month Pleated Electrostatic (6-Pack)

$75.59

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Filtrete

Filtrete 20x25x1 Air Filter – MERV 11, MPR 1000, 4-Pack (Actual Size 19.68 x 24.68 x 0.81 in)

$70.11

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UBeesize

UBeesize 20x25x1 Reusable Electrostatic Air Filter – MERV 8, Washable, Lifetime

$65.72

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BNX TruFilter front view shows a durable 20x25x1 air filter ready for HVAC

BNX

BNX TruFilter 20x25x1 Air Filter – MERV 11 (6-Pack) Made in USA

$69.41

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Simply

Simply 20x25x1 MERV 11 Air Filter – 6 Pack | Universal Fit | Made in USA

$71.87

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Simply

Simply 20x25x1 MERV 13 Air Filter – 6 Pack (Actual Size 19.75 x 24.75 x 0.75) for Home HVAC

$75.56

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Frigidaire

Frigidaire PureAir MERV 8 Allergen Filter – 20x25x1 (19.81 x 24.81 x 0.81) – 6 Pack

$73.54

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Aerostar

Aerostar 20x25x1 MERV 13 Pleated Air Filter – 6 Pack, Actual Size 19.75 x 24.75 x 0.75 in, Made in USA

$72.85

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Aerostar

Aerostar 20x25x1 MERV 11 Pleated Air Filter – 6 Pack (Actual Size 19.75 x 24.75 x 0.75) Made in USA

$58.35

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Aerostar

Aerostar 20x25x1 MERV 8 Pleated Air Filter - 6 Pack, Actual Size 19.75 x 24.75 x 0.75 in | Made in USA

$68.74

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Filtrete

Filtrete 20x25x1 AC Furnace Filter – MERV 8, MPR 700, 4-Pack (3-Month Pleated)

$59.73

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Filtrete

Filtrete 20x25x1 Smart Air Filter — MERV 12, MPR 1500, Bluetooth Life Tracking (2-Pack)

$67.37

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Nordic Pure

Nordic Pure 20x25x1 MERV 12 Pleated Air Filters – 6 Pack (Actual Size: 19.5 x 24.5 x 0.75)

$81.07

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Amazon Basics

Amazon Basics MERV 5 Furnace Air Filter – 20x25x1 in, 6-Pack (Actual Size 19.75 x 24.75 x 0.75 in)

$42.69

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Honeywell

Honeywell MERV 11 Allergen Reducer 20x25x1 – Electrostatic Pleated HVAC Filter (4-Pack) Made in USA

$56.37

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Filtrete

Filtrete 20x25x1 Air Filter, 6-Pack | MERV 1 HVAC Replacement (Actual Size 19.69 x 24.69 x 0.88 in)

$42.72

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Torjim

Torjim 20x25x1 MERV8 Washable Electrostatic Air Filter - Reusable AC/HVAC Furnace Filter

$56.41

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Aerostar

Aerostar 20x25x1 MERV 6 Pleated Air Filter, 6 Pack (Actual Size: 19.75 x 24.75 x 0.75)

$52.30

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REAIR

Reair 20x25x1 Washable Air Filter – Reusable MERV 8 with Snap-On Frame

$56.41

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BNX TruFilter 20x25x1 dust-defense filter in HVAC for cleaner air

BNX

BNX TruFilter 20x25x1 MERV 8 Air Filter – Made in USA, 6-Pack for Dust, Pet, Mold & Pollen

$63.22

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Aerostar

Aerostar 20x25x1 MERV 8 Pleated Air Filter - 4 Pack for Furnace & AC

$42.72

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Simply

Simply 20x25x1 Air Filter MERV 8 MPR 600 4-Pack Universal HVAC Filter

$42.26

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Simply

Simply 20x25x1 Air Filter, MERV 8 – 6 Pack for Home HVAC (Actual Size 19.75 x 24.75 x 0.75)

$60.77

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Filtrete

Filtrete 20x25x1 Air Filter MERV 5, 6-Pack – MPR 300 Dust Reduction for Home HVAC

$42.69

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Filtrete

Filtrete 20x25x1 MERV 13 MPR 1900 Air Filter – 2-Pack for Allergens, Bacteria & Pollutants | 3-Month Replacement

$50.93

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True Blue

True Blue 20x25x1 MERV 11 Allergen Air Filter (4-Pack) | Electrostatic Pleated HVAC Replacement Filter | Made in USA

$45.46

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OlitAir

OlitAir 20x25x1 MERV 8 Air Filter | Reusable ABS Frame + 7 Replaceable Media (Actual Size: 19 3/4" x 24 3/4" x 3/4")

$60.51

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Generic

Generic AA Flanders 20x25x1 (4 Pack) – Disposable MERV 4 Air Filters

$50.93

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Filtrete

Filtrete 20x25x1 Air Filter — MERV 12, MPR 1500, 2-Pack (Actual Size 19.62 x 24.62 x 0.78 in)

$39.30

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20x25x1 is one of the most common return-air filter sizes in US homes.

Actual size. 20x25x1 is the nominal size. The filter itself measures about 19.5 x 24.5 x 0.75 in, and the exact figure is printed on the frame and in each listing.
Rating. MERV 8 handles dust and pollen, MERV 11 adds pet dander, MERV 13 captures finer particles. Higher ratings restrict airflow more.
Change interval. One-inch filters are usually changed every one to three months.

Not sure which rating to buy? See the MERV rating chart and the MERV finder. All sizes: HVAC and furnace air filters.