Filters Fast Replacement Home Air Filters
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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 5:30pm EST.

FiltersFast Air Filters Product List:


Filters Fast® Replacement for Lennox CB30M-51 - 6-Pack
Filters Fast® Replacement for Lennox CB30M-51 - 6-Pack
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Retail: $99.99

Our Price: $82.95

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Filters Fast® Custom Size Air Filters - Made to your size Fast
Filters Fast® Custom Size Air Filters - Made to your size Fast
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Ships in 2 to 3 business days.

Retail: $97.99

Our Price: $87.96

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Filters Fast® Replacement for Trion Air Bear 255649-102 20x25x5 MERV 8 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Trion Air Bear 255649-102 20x25x5 MERV 8 Furnace & AC Air Filter - 2-Pack
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Retail: $69.99

Our Price: $53.95

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Filters Fast® Replacement for Trion Air Bear 259112-102 20x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Trion Air Bear 259112-102 20x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $62.95

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Filters Fast® Replacement for Carrier GAPCCCAR2025 20x25x3.5 MERV 15 Furnace & AC Air Filter
Filters Fast® Replacement for Carrier GAPCCCAR2025 20x25x3.5 MERV 15 Furnace & AC Air Filter
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Retail: $99.99

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Filters Fast® Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Lennox X6673 20x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack
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Retail: $99.99

Our Price: $69.95

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Filters Fast® Replacement for Trion Air Bear 255649-105 16x25x5 MERV 8 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Trion Air Bear 255649-105 16x25x5 MERV 8 Furnace & AC Air Filter - 2-Pack
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Retail: $69.99

Our Price: $52.95

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Filters Fast® Replacement for Trane BAYFTFR17M 17.5x27x5 MERV 8 Replacement Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Trane BAYFTFR17M 17.5x27x5 MERV 8 Replacement Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $64.95

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Filters Fast® Replacement for Lennox X6670 16x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Lennox X6670 16x25x5 MERV 11 Healthy Climate Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $59.95

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Filters Fast® Replacement for Carrier GAPCCCAR1625 17x25x3.5 MERV 15 Furnace & AC Air Filter
Filters Fast® Replacement for Carrier GAPCCCAR1625 17x25x3.5 MERV 15 Furnace & AC Air Filter
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Retail: $89.99

Our Price: $69.95

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Filters Fast® Replacement for AprilAire SpaceGard 2200 20x25x6 MERV 8 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for AprilAire SpaceGard 2200 20x25x6 MERV 8 Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $59.95

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Filters Fast® Replacement for AprilAire 201 20x25x6 MERV 11 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for AprilAire 201 20x25x6 MERV 11 Furnace & AC Air Filter - 2-Pack
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Retail: $59.99

Our Price: $49.95

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Filters Fast® Replacement for Honeywell FC100A1037 20x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Honeywell FC100A1037 20x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
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Ships in 1 to 2 business days.

Retail: $79.99

Our Price: $64.95

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Filters Fast® Replacement for Honeywell FC100A1029 16x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Honeywell FC100A1029 16x25x5 MERV 11 Furnace & AC Air Filter - 2-Pack
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Retail: $70.99

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Filters Fast® Replacement for Honeywell FC100A1011 20x20x5 MERV 11 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Honeywell FC100A1011 20x20x5 MERV 11 Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $54.95

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Filters Fast® Replacement for Carrier GAPCCCAR2020 20x20x3.5 MERV 15 Furnace & AC Air Filter
Filters Fast® Replacement for Carrier GAPCCCAR2020 20x20x3.5 MERV 15 Furnace & AC Air Filter
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Retail: $89.99

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Filters Fast® FFC26215TRN Replacement for Trane Perfect Fit BAYFTAH26M 21x26x5 2pk
Filters Fast® FFC26215TRN Replacement for Trane Perfect Fit BAYFTAH26M 21x26x5 2pk
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Retail: $149.99

Our Price: $87.95

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Filters Fast FFC21235TRNM8 Replacement for Trane 21x23.5x5 Perfect Fit BAYFTAH23M 2-Pack
Filters Fast FFC21235TRNM8 Replacement for Trane 21x23.5x5 Perfect Fit BAYFTAH23M 2-Pack
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Retail: $80.99

Our Price: $56.95

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Filters Fast® Replacement for AprilAire 2200, 2250 20x25x6 MERV 13 SpaceGuard Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for AprilAire 2200, 2250 20x25x6 MERV 13 SpaceGuard Furnace & AC Air Filter - 2-Pack
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Retail: $119.99

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Filters Fast® FFC215215TRNM8 Replacement for Trane 21x21.5x5 BAYFTAH21M FLR06072 2-Pack
Filters Fast® FFC215215TRNM8 Replacement for Trane 21x21.5x5 BAYFTAH21M FLR06072 2-Pack
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Retail: $79.99

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Filters Fast® FFC20256SG Replacement For AprilAire Space Gard 2200 20x25x6 - 2-Pack
Filters Fast® FFC20256SG Replacement For AprilAire Space Gard 2200 20x25x6 - 2-Pack
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Retail: $89.99

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Filters Fast® Replacement for Trane BAYFTAH26M 21x26x5 MERV 8 Furnace & AC Air Filter - 2-Pack
Filters Fast® Replacement for Trane BAYFTAH26M 21x26x5 MERV 8 Furnace & AC Air Filter - 2-Pack
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Retail: $79.99

Our Price: $64.95

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Filters Fast® FFC16255HONM8 Replacement for Honeywell FC100A1029 - 16x25x5, 2-Pack
Filters Fast® FFC16255HONM8 Replacement for Honeywell FC100A1029 - 16x25x5, 2-Pack
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Retail: $64.99

Our Price: $44.95

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Filters Fast® DSG401M11FF Replacement for AprilAire 401, 16x28x6 MERV11 - 2-Pack
Filters Fast® DSG401M11FF Replacement for AprilAire 401, 16x28x6 MERV11 - 2-Pack
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Retail: $79.99

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Filters Fast® Replacement for Trane 21x27x5 Perfect Fit BAYFTFR21M - 2-Pack
Filters Fast® Replacement for Trane 21x27x5 Perfect Fit BAYFTFR21M - 2-Pack
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Ships in 1 to 2 business days.

Retail: $78.99

Our Price: $67.95

Save 14%!

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FILTERS FAST SHIPPING POLICY

Filters Fast offers economy free shipping every day on U.S. orders over $99 when shipping to the lower 48 states. This free shipping offer excludes Alaska and Hawaii, P.O. Box or APO/FPO/DPO and international orders. Orders under $99 ship for a fee to most destinations within the contiguous United States (excluding Hawaii and Alaska).

Filters Fast offers expedited shipping. When selecting any expedited shipping method, such as FedEx 2nd day or Overnight, your Transaction will be processed and Products shipped out the next business day. Business days are Monday through Friday. Any expedited delivery requests that are placed Friday through Sunday will not result in Products shipped until Monday. If the following Monday falls on a FedEx recognized holiday, your Products will be shipped on Tuesday.

Most Products ship within 1-2 business days after Transaction finalization, unless otherwise stated on the Product page on the Services. Your final shipping cost and estimated delivery time frame will be available to you during checkout.

We offer guaranteed same-day shipping on select Products with your preferred delivery method every Tuesday, Wednesday, and Thursday. When guaranteed same-day shipping is available on a Product, we will state this on the Product page, with the label "Ready to Ship". The "order within" countdown timer provides the window of time in which you must checkout to have your Products ship out the same day the Transaction is finalized. If a Transaction is finalized right at or after 2:00 PM EST, the applicable Products will ship the next business day. Our business days are Monday through Friday. Filters Fast also reserves the right, without cause, to make changes to any same-day shipping timeframe as same-day shipping may become unavailable within the allotted timeframe due to changes in inventory or high-volume capacity when you finalized your Transaction.

Once the shipping label is created, you will receive an email confirmation with the tracking information for your package. A Product with the "Ready to Ship" label does not apply to the delivery speed.

For expedited shipping, you will still need to select your preferred shipping method at checkout. Filters Fast is not responsible or liable for any shipping delays of any kind, including carrier delays, inclement weather, government restrictions, labor shortages, gas or utilities shortages, acts of God, etc.

Please note, some Products are special order and may require a longer ship-out and/or delivery time frame. These Product have a shipping timeframe stated on the Product page on the Services.

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