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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:


Carrier 16x20x4.25 Merv 11 AC & Furnace Filter Replacement by Filters Fast® - 2-Pack
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Retail: $89.99

Our Price: $67.95

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Filters Fast® FFC16205HONM8 Replacement for Honeywell FC100A1003 MERV8, 16x20x5 - 2-Pack
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Retail: $69.99

Our Price: $54.95

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Filters Fast® Replacement for Goodman MU2025, 20x25x5 - 2-Pack
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Retail: $80.99

Our Price: $65.95

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Filters Fast® Replacement for GeneralAire 4556, 6FM2020 - 2-Pack
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Retail: $89.99

Our Price: $64.95

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Filters Fast® 5" FFC175275TRN OKGM Air Filter - 2-Pack
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Retail: $105.99

Our Price: $72.99

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Filters Fast® 4-inch MERV 8 Pleated Air Filters 3-Pack
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Retail: $89.99

Our Price: $68.95

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Filters Fast® FFC20265WRM13 Replacement for White Rodgers F825-0549 - MERV13
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Retail: $100.99

Our Price: $82.95

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MERV 11 Filters Fast® 2" Replacement for WaterFurnace 59P509-06 - 6-Pack
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Retail: $119.99

Our Price: $91.95

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Filters Fast® Replacement for Bryant 918395 MERV11, 16x25x5 - 2pk
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Retail: $70.99

Our Price: $60.95

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Filters Fast® Brand Carrier FILCCFNC0021 MERV13 2-Pack
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Retail: $99.99

Our Price: $78.95

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Filters Fast® Brand Carrier FILXXFNC0121 MERV13 2-Pack
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Retail: $79.99

Our Price: $69.95

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Goodman M2-1056 MERV11 20x20x5 Air Filters - 2-Pack
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Retail: $89.99

Our Price: $67.95

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Filters Fast® FFC20265WRM13 Replacement for White Rodgers DPFI20X26X5M13 MERV13, 20x26x5 - 2-Pack
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Retail: $100.99

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Filters Fast® Replacement for Goodman 9183950 MERV 11, 16x25x5 - 2-Pack
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Retail: $70.99

Our Price: $60.95

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Filters Fast® Replacement for Carrier CNC2025, 20x25x5 - 2-Pack
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Retail: $80.99

Our Price: $65.95

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Filters Fast® Replacement for Five Seasons M8-1056- 2-Pack
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Retail: $80.99

Our Price: $65.95

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Filters Fast® Replacement for Bryant FILBBFNC0017, 16x20x5 2-Pack
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Retail: $89.99

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Filters Fast® 1" MERV 11 Replacement For Honeywell 14x14x1 MERV 11 6-Pack
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Retail: $89.99

Our Price: $74.95

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Filters Fast® Replacement for TopTech TT-FM-1420 - 3-Pack
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Retail: $87.99

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Filters Fast® FFC16255HON Replacement for GeneralAire FP1625HW 2-Pack
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Retail: $70.99

Our Price: $50.95

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Filters Fast® FF4M8-20254, 20x25x4 MERV8 Replacement for GeneralAire FP2025 3-Pack
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Retail: $89.99

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Filters Fast® Replacement for Honeywell FC40R1011 - 3-Pack
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within the continental U.S.

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Ships in 2 to 3 business days.

Retail: $147.95

Our Price: $119.95

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Filters Fast® Replacement for Trane Perfect Fit BAYFTFR21P4A - 6-Pack
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Retail: $100.95

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Filters Fast® Replacement for Carrier FILCCCAR0020 - 2-Pack
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Retail: $60.99

Our Price: $46.95

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Filters Fast® FFC16205HON Replacement for Bryant FILXXFNC0117 MERV11 - 2-Pack
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Retail: $70.99

Our Price: $55.95

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