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FiltersFast replacement home air filters should be replaced every one to three months depending on air quality and usage. Replacement 1", 2", 4", and 5" air filters are available and come in select MERV ratings.

Find your Air Filter Size


Depth
Most common house filters are 1" in the depth or thickness. If you measure your filter to find the real thickness you will find that it isn't the same dimension as it states on the filter. This difference in the real dimension to the printed dimension are industry standards and can be confusing. The printed size on a filter is called nominal size and is not the real dimension of the filter. So a 1" thick filter is normally .75" thick. To make it easier to talk about sizes we use the nominal dimensions to refer to filter instead of the actual or real size. Because you are creating a filter by selecting the real dimensions, it is important to know the real dimensions of your filter instead of the nominal or printed dimensions that show on your filter. We will show you the nominal dimension for the Depth or thickness because there are only 1",2", or 4" sizes. Now you would select 1" for your filter if you are replacing a .75" filter, if your filter is 1.75" that would be a 2" filter and a 4" is 3.5"
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Size
Nominal Size: The printed value of a filter dimension. (15"x20"x1")
Actual size: Actual or real sizes of filters are typically .5" less than the printed dimension or nominal value listed on the filter. A filter of 20"x24" would be 19.5"x23.5"
Need help? Call 866-438-3458. Our sales line is open Monday through Friday between the hours of 9am to 12:30pm and 1:30pm to 6pm EST.

FiltersFast Air Filters Product List:


Goodman G2-1056 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Nordyne 918396 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Carrier P102-2020 MERV13 20x20x5 Air Filter 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Bryant P102-2020 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Payne P102-2020 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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BDP P102-2020 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Five Seasons P102-2020 MERV13 Comp - 2-Pack
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Retail: $89.99

Our Price: $72.95

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Electro-Air P102-2020 MERV13 Comp - 2-Pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $72.95

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Nordyne P102-2020 MERV13 Comp - 2-Pack
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Retail: $89.99

Our Price: $72.95

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Totaline P102-2020 MERV13 Comp - 2-Pack
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Retail: $89.99

Our Price: $72.95

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York P102-2020 MERV13 Comp - 2-Pack
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Retail: $89.99

Our Price: $72.95

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Filters Fast® IH1A2323BSOANPHO HEPA Filter Replacement for Purolator WGB432379 - 23.3X23.3x11.5
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within the continental U.S.

Out of stock

Retail: $294.99

Our Price: $250.99

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Filters Fast® FFC20255TAB Replacement for GeneralAire 4401, 13415 2-Pack
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Retail: $69.99

Our Price: $56.95

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Filters Fast® Replacement for Trane Perfect Fit BAYFTFR14P4A - 6-Pack
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Ships in 1 to 2 business days.

Retail: $100.95

Our Price: $60.95

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Filters Fast® Replacement for FLRSF1185 - MERV 8 - 6-Pack
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Ships in 1 to 2 business days.

Retail: $77.99

Our Price: $59.95

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Carrier 16x20x4.25 Merv 13 AC & Furnace Filter Replacement by Filters Fast® - 2-Pack
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Ships in 5 to 6 business days.

Retail: $89.99

Our Price: $72.95

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Carrier 20x20x5 Merv 11 AC & Furnace Filter Replacement by Filters Fast® - 2-Pack
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Ships in 3 to 4 business days.

Retail: $89.99

Our Price: $67.95

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Carrier 20x20x5 Merv 13 AC & Furnace Filter Replacement by Filters Fast® - 2-Pack
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Ships in 2 to 3 business days.

Retail: $89.99

Our Price: $72.95

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Filters Fast&reg Replacement for Honeywell FC20R1625 - 3-Pack
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Ships in 5 to 6 business days.

Retail: $107.85

Our Price: $89.85

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Filters Fast® Replacement for Honeywell FC20R2020 - 3-Pack
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Retail: $107.85

Our Price: $89.85

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Filters Fast® Replacement for Honeywell FC20R2025 - 3-Pack
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Ships in 5 to 6 business days.

Retail: $107.85

Our Price: $89.85

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Filters Fast® 16x20x4 MERV 13 AirTight Return Grille Filter - 3-Pack
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within the continental U.S.

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Ships in 5 to 6 business days.

Retail: $176.85

Our Price: $149.85

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Filters Fast® 16x25x4 MERV 13 AirTight Return Grille Filter - 3-Pack
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within the continental U.S.

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Ships in 5 to 6 business days.

Retail: $176.85

Our Price: $149.85

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Filters Fast® 20x20x4 MERV 13 AirTight Return Grille Filter - 3-Pack
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within the continental U.S.

In Stock!
Ships in 5 to 6 business days.

Retail: $176.85

Our Price: $149.85

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Filters Fast® 20x25x4 MERV 13 AirTight Return Grille Filter - 3-Pack
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within the continental U.S.

In Stock!
Ships in 5 to 6 business days.

Retail: $176.85

Our Price: $149.85

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