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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:


MERV 13 Filters Fast® 2" Replacement for Santa Fe 4037722 - 6-Pack
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within the continental U.S.

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Retail: $150.99

Our Price: $109.95

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Filters Fast® Replacement for Carrier KFAFK0412XXL - MERV 8 - 6-Pack
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Retail: $79.99

Our Price: $69.95

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Filters Fast® Replacement for Totaline P102-2025, 20x25x5 - 2-Pack
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Retail: $80.99

Our Price: $65.95

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Filters Fast® Replacement for Bryant P102-1625, 16x25x5 - 2pk
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Retail: $70.99

Our Price: $60.95

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Filters Fast® Replacement for Carrier M1-1056 MERV11, 16x25x5 - 2pk
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Retail: $70.99

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Filters Fast® Brand Replacement for White Rodgers DPFI16X26X5M13 MERV13, 16x26x5 - 2-Pack
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Retail: $85.99

Our Price: $75.95

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Filters Fast® FFC245275TRN Replacement for Trane BAYFTFR24M2, 24.5x27x5 - 2-Pack
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Retail: $99.99

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Filters Fast® FFC16265WR Replacement for White Rodgers F825-0548 16x26x5 2-Pack
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Retail: $70.99

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Filters Fast® FFC215215TRNM13 Replacement for Trane BAYFTAH21M, 21.5x21x5 Perfect Fit - MERV13, 2-Pack
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Retail: $140.99

Our Price: $98.95

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Filters Fast® Replacement for Goodman AMP-11-1625-45 - 2-Pack
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Retail: $70.99

Our Price: $50.95

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Filters Fast® Replacement for Lennox X0586, 20x25x5 - 2-Pack
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Retail: $69.99

Our Price: $56.95

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Filters Fast® Replacement for Five Seasons M1-1056 MERV11, 16x25x5 - 2-Pack
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Retail: $70.99

Our Price: $60.95

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Filters Fast® Replacement for Trane BAYFTFR14M2 Air Filter - 2-Pack
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Retail: $89.99

Our Price: $59.95

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Bryant FILXXFNC0121 MERV11 Air Filters - 2-Pack
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Retail: $89.99

Our Price: $69.95

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Filters Fast® Brand Replacement for White Rodgers DPFI16X26X5M11 MERV11, 16x26x5 - 2-Pack
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Retail: $80.99

Our Price: $60.95

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Filters Fast® Replacement for Carrier KFAFK0312LRG - MERV 8 - 6-Pack
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Retail: $69.99

Our Price: $59.95

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Filters Fast® Replacement for Lennox X0587 - 20x26x5, 2-Pack
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Retail: $80.99

Our Price: $62.95

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Carrier 20x20x4.25 Merv 11 AC & Furnace Filter Replacement by Filters Fast® - 2-Pack
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Retail: $89.99

Our Price: $69.95

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Filters Fast® FFC24265TRNM13 Replacement for Trane BAYFTFR24M, 24x26x5 Perfect Fit - 2-Pack
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Retail: $140.99

Our Price: $86.95

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Filters Fast® FFC16255TABM8 Replacement For Trion AB-51625-8
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Retail: $59.99

Our Price: $46.95

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Filters Fast® MERV 8 Pleated 1" Panel Filter 6-Pack
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Retail: $77.99

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Filters Fast® Replacement for Goodman AMP-11-2025-45 - 2-Pack
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Retail: $75.99

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Filters Fast® 1" Air Filters MERV 11 Replacement for Aerostar 1" MERV 11 6-Pack
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Retail: $89.99

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Filters Fast® Replacement for Totaline P102-1620 MERV11, 16x22x5 - 2-Pack
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Retail: $79.99

Our Price: $65.95

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Filters Fast® Replacement for Goodman MU1625 MERV11, 16x25x5 - 2-Pack
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Retail: $70.99

Our Price: $60.95

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