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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® 1" Allergy AC and Furnace Filters 6-Pack
Merv 13 Filters Fast® 1" Allergy AC and Furnace Filters 6-Pack
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Retail: $99.99

Our Price: $79.95

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MERV 8 Filters Fast® 1" AC and Furnace Air Filters 6-Pack
MERV 8 Filters Fast® 1" AC and Furnace Air Filters 6-Pack
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Ships in 1 to 2 business days.

Retail: $77.99

Our Price: $59.95

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MERV 11 Filters Fast® 1" AC and Furnace Air Filters - 6-Pack
MERV 11 Filters Fast® 1" AC and Furnace Air Filters - 6-Pack
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Retail: $89.99

Our Price: $74.95

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MERV 13 Filters Fast® 4" Allergy AC and Furnace Filter 3-Pack
MERV 13 Filters Fast® 4" Allergy AC and Furnace Filter 3-Pack
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Ships in 1 to 2 business days.

Retail: $119.99

Our Price: $92.95

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MERV 11 Filters Fast® 2" AC and Furnace Air Filters 6-Pack
MERV 11 Filters Fast® 2" AC and Furnace Air Filters 6-Pack
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Retail: $119.99

Our Price: $91.95

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MERV 8 Filters Fast® 2" AC and Furnace Air Filters 6-Pack
MERV 8 Filters Fast® 2" AC and Furnace Air Filters 6-Pack
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Ships in 1 to 2 business days.

Retail: $99.99

Our Price: $77.95

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MERV 11 Filters Fast® 4" AC and Furnace Air Filters 3-pack
MERV 11 Filters Fast® 4" AC and Furnace Air Filters 3-pack
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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $79.95

Save 11%!

MERV 8 Filters Fast® 4" AC and Furnace Air Filters 3-pack
MERV 8 Filters Fast® 4" AC and Furnace Air Filters 3-pack
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Retail: $89.99

Our Price: $68.95

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MERV 13 Filters Fast® 2" Allergy AC and Furnace Filters 6-Pack
MERV 13 Filters Fast® 2" Allergy AC and Furnace Filters 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® 4" MERV 11 Replacement for Aprilaire 261 Air Filter - 3-pack
Filters Fast® 4" MERV 11 Replacement for Aprilaire 261 Air Filter - 3-pack
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Ships in 3 to 4 business days.

Retail: $149.99

Our Price: $123.55

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Filters Fast® Replacement for Lennox CB29M65 - 6-Pack
Filters Fast® Replacement for Lennox CB29M65 - 6-Pack
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Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Carrier FA4A018 - 6-Pack
Filters Fast® Replacement for Carrier FA4A018 - 6-Pack
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Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Amana BBA36 - 6-Pack
Filters Fast® Replacement for Amana BBA36 - 6-Pack
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Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Amana BBA60 - 6-Pack
Filters Fast® Replacement for Amana BBA60 - 6-Pack
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Retail: $139.99

Our Price: $115.40

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Filters Fast® Replacement for Carrier FA4A024 - 6-Pack
Filters Fast® Replacement for Carrier FA4A024 - 6-Pack
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Ships in 1 to 2 business days.

Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Carrier FA4A036 - 6-Pack
Filters Fast® Replacement for Carrier FA4A036 - 6-Pack
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Retail: $97.99

Our Price: $77.96

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Filters Fast® Replacement for Carrier FB4A024 - 6-Pack
Filters Fast® Replacement for Carrier FB4A024 - 6-Pack
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Ships in 1 to 2 business days.

Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Carrier FC4B018 - 6-Pack
Filters Fast® Replacement for Carrier FC4B018 - 6-Pack
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Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Carrier FC4B024 - 6-Pack
Filters Fast® Replacement for Carrier FC4B024 - 6-Pack
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Retail: $99.99

Our Price: $79.95

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Filters Fast® Replacement for Carrier FA4A030 - 6-Pack
Filters Fast® Replacement for Carrier FA4A030 - 6-Pack
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Retail: $97.99

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Filters Fast® Replacement for Carrier FB4A030 - 6-Pack
Filters Fast® Replacement for Carrier FB4A030 - 6-Pack
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Retail: $97.99

Our Price: $77.96

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Filters Fast® Replacement for Carrier FB4A036 - 6-Pack
Filters Fast® Replacement for Carrier FB4A036 - 6-Pack
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Ships in 1 to 2 business days.

Retail: $97.99

Our Price: $77.96

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Filters Fast® Replacement for Carrier FC4B030 - 6-Pack
Filters Fast® Replacement for Carrier FC4B030 - 6-Pack
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Retail: $97.99

Our Price: $77.96

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Filters Fast® Replacement for Carrier FC4B036 - 6-Pack
Filters Fast® Replacement for Carrier FC4B036 - 6-Pack
In Stock!
Ships in 1 to 2 business days.

Retail: $97.99

Our Price: $77.96

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Filters Fast® Replacement for Carrier FA4A042 - 6-Pack
Filters Fast® Replacement for Carrier FA4A042 - 6-Pack
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Retail: $97.99

Our Price: $77.96

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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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