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Find Replacement Air Filters Fast & Easy!

Air Filter Shield

While many people worry about outdoor air quality, statistics show that they actually should be more concerned about indoor air quality (IAQ). IAQ is the measure of harmful pollutants discovered within or around your home. The EPA ranks IAQ as one of the top five public health risks.

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Air Filter FAQ

Can I use the same air filter for both heat and AC?

Yes, both AC filters and furnace filters are the same thing. We categorize filters based on their intended use to make filter shopping easier for the customer. During the summer months you are more likely to search for AC filters. While during colder winter months you are looking to buy furnace filters. A good tip for remembering when to change your filters is to replace them at the start of each new season.

Which direction does the air filter go?

Always point the arrow on the box in the direction of airflow. If you are unsure the direction of airflow turn on the system fan. Do not remove the old filter before checking airflow as this might allow dirt or debris to escape.

What is air filter MERV rating?

The Minimum Efficiency Reporting Value (MERV) is used by manufacturers to explain how efficent the air filter is at trapping airborne particles. A higher MERV rating means cleaner air but reduced air flow. MERV 8 filters capture 80% of airborn particles like pollen, dust mites, mold spores, and pet dander down to 3 microns in size. MERV 11 air filters capture up to 95% of the above mentioned airborne particles down to 1 micron in size. If you choose a MERV 13 filter expect greatly diminished airflow but improved filtration of bacteria, tobacco smoke, and cooking oil down to 0.3 micorn in size. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

When to change the air filter in your house?

Replace your air filters every 3 months. You may need to replace your filters more frequently depending on air quality. If you are unsure about indoor air quailty check the filter monthly. If you notice the filter material is greatly discolored or noticably dirty change out the filter. Failing to replace air filters as recommened can lead to reduced system efficieny, greater energy costs, and poor air quailty.

Which air filter is best for allergies?

If you have respiratory problems caused by pollen, dust, mold, or pet dander a MERV 11 filter can help reduce the severity of aliments caused by allergies. If you are sensitive to smoke from cooking or tobacco a MERV 13 filter is recommend. For many allergy sufferers it is recommend you install filters to process both supply and return air. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

Which air filter is best for my home?

Your choice in air filter should depend on needs. MERV 8 filters are perfect if you have no pets and allergies are not a serious concern. MERV 11 filters are recommend for occasional allergy sufferers and homes with pets. A MERV 13 filter should be used if allergies are a serious concern and there are tobacco smokers in the house.

Where are they made?

Filtersfast brand air filters are proudly made in America. While the manufacturing location of products can vary from company-to-company, Country of Origin laws require that most products manufactured outside of America bear labeling that tells consumers where the product is made. This label should be visable on the product itself or the packaging in which it arrived.

Are the home air filters electrostatically charged?

Yes, Filtersfast, Filtrete, Carrier, among many other air filter brands use an electrostatically charged filter media. Fiberglass air filters are far less common today and were never designed to improve air quality, rather they protect HVAC systems from large dirt and debris.

Filters Fast furnace air filters offer an affordable option to excellent indoor air quality. These replacement home furnace filters will cost you much less than what you will save on your energy efficiency.


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Filters Fast Furnace Filters product list


FiltersFast Trane 21x23x5 Compatible Filter 2-Pack
(FFC21235TRN OKGM)

The Filters Fast 5" Trane Perfect Fit 21x23x5 Compatible FFC21235TRN OKGM is the correct replacement for the following: any air cleaner that requires a 21" x 23" x 5" filter This Filters Fast air filter also replaces Trane Perfect Fit BAYFTAH23


Discontinued Product Read Description.
FiltersFast Trane 21x23x5 Compatible Filter 2-Pack
Our Price: $42.99
Retail: $49.95
You Save 14%!

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FiltersFast 5" Trane BAYFTAH23M Compatible 2-Pack
(FFC23205TRN OKGM)

The Filters Fast 5" Trane PF BAYFTAH23M Compatible FFC23205TRN OKGM fits the following: any air cleaner that calls for a 20" x 23" x 5" filter This Filters Fast air filter also replaces the Trane Perfect Fit BAYFTAH23M filter. This Trane compa


Discontinued Product Read Description.
FiltersFast 5" Trane BAYFTAH23M Compatible 2-Pack
Our Price: $66.66
Retail: $104.99
You Save 37%!

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Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack
(FFOKGM4 6PACK)

The Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack is a set of replacement air filters that can eliminate common odors from your home or office, including pet odors, gaseous odors, and smoke and cigarette odors. These odor killer filters utilize G

Free shipping within the continental United States!

Discontinued Product Read Description.
Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack
Our Price: $148.53
Retail: $199.95
You Save 26%!

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Filters Fast 5" Trion Compatible Air Filter 2-Pack
(FFC20255TAB OKGM)

The Filters Fast 5" Trion Compatible FFC20255TAB OKGM is a compatible air filter for Trion Air Bear Air Cleaners that can replace part numbers 255649-102, 229990-002, and 229990-102. This Trion compatible filter features a MERV 8 efficiency rating


Discontinued Product Read Description.
Filters Fast 5" Trion Compatible Air Filter 2-Pack
Our Price: $69.66
Retail: $104.99
You Save 34%!

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FiltersFast 5" WR Compatible FFC20265WR OKGM
(FFC20265WR OKGM)

The FiltersFast 5" WR Compatible FFC20265WR OKGM is a compatible replacement air filter that is an upgrade over the White Rodgers F825-0549 air filter. The Filters Fast FFC20265WR OKGM 20" x 26" x 5" air filter can be used in several White Rodgers A


Discontinued Product Read Description.
FiltersFast 5" WR Compatible FFC20265WR OKGM
Our Price: $64.66
Retail: $99.99
You Save 35%!

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Filters Fast MERV 8 Odor Killer 2" 6-Pack
(FFOKGM 2 INCH)

The Filters Fast MERV8 Odor Killer 2" 6-Pack is an effective replacement charcoal air filter to eliminate pet odors, gases, smoke odors, cigarette odors and other contaminants from your indoor air.


Discontinued Product Read Description.
Filters Fast MERV 8 Odor Killer 2" 6-Pack
Our Price: $85.02
Retail: $99.99
You Save 15%!

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Quality Flow 12x24x4 MERV 14 Panel Filter 3-Pack
(FFQF1412244)

The Filters Fast FFQF1412244 fits the following: Any HVAC system that requires a 12 inch x 24 inch x 4 inch filter The Quality Flow 12x24x4 MERV 14 Filter 3-Pack features quality flow proprietary media that provides lower pressure drop than st

Free shipping within the continental United States!

Discontinued Product Read Description.
Quality Flow 12x24x4 MERV 14 Panel Filter 3-Pack
Our Price: $199.98
Retail: $219.99
You Save 9%!

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Filters Fast FC100A1011 Compatible MERV 8 2-Pack
(FFCOK20205HON OKGM)

The Filters Fast FC100A1011 is a 20x20x5 filter that is a compatible version of the Honeywell FC100A1011. This 20x20x5 MERV 8 filter will keep airborne pollutants and contaminants out of your homes air. Filters Fast air and furnace filters provide


Discontinued Product Read Description.
Filters Fast FC100A1011 Compatible MERV 8 2-Pack
Our Price: $39.99
Retail: $94.99
You Save 58%!

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Filters Fast 20x20x5 Trion Compatible 2-Pack
(FFC20205TAB OKGM)

The FiltersFast 20x20x5 Trion Compatible Filter can be used Trion AirBear and other air cleaners requiring 20"x20"x5" filter cartridges. They remove airborne particles such as pollen, dust, dander, dust, and other allergens from your indoor air.


Discontinued Product Read Description.
Filters Fast 20x20x5 Trion Compatible 2-Pack
Our Price: $39.99
Retail: $94.99
You Save 58%!

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Filters Fast MERV 8 20x24x5 Air Filter 2-Pack
(FFC20245GA OKGM)

The FiltersFast MERV 8 20x24x5 Air Filter can be used on Generalaire AC-1, Carrier 31MF020100, Byrant 902BXX020, and air cleaners requiring a 20"x24"x5" filter. These effective air filters remove airborne particles to provide healthier indoor air.


Discontinued Product Read Description.
Filters Fast MERV 8 20x24x5 Air Filter 2-Pack
Our Price: $60.66
Retail: $69.99
You Save 13%!

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Filters Fast MERV 11 Return Grille Air Filter 5"
(FFRAGF)

The Filters Fast MERV 11 Return Grille Air Filter 5" are a great option for upgrading or replacing the traditional 1-inch air filter found in your home or office. View details to learn more...


Discontinued Product Read Description.
Filters Fast MERV 11 Return Grille Air Filter 5"
Our Price: $29.99
Retail: $39.99
You Save 25%!

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Filters Fast Odor Killer Air Filter, 12-pack
(FFOKM8)

The Filters Fast Odor Killer is a MERV 8 two-stage carbon blended filter designed to "kill" odors such as cigarette smoke, pet odors, irritating gases, cooking odors and other bad odors that might be affecting your indoor air quality.


Discontinued Product Read Description.
Filters Fast Odor Killer Air Filter, 12-pack
Our Price: $99.00
Retail: $100.00
You Save 1%!

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Odor Killer Return Grille Air Filter - MERV 8, 5"
(FFRAGGM)

The Odor Killer Return Grille Air Filter eliminates smoke odors, cigarette odors, pet odors, gases and other contaminants from your indoor air. Since this return grille air filter is 5" deep compared to the standard 1" air filter, its greater surfac


Discontinued Product Read Description.
Odor Killer Return Grille Air Filter - MERV 8, 5"
Our Price: $28.99
Retail: $45.99
You Save 37%!

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Filters Fast Odor Killer Air Filter, 6-pack
(FFOK 6-pack)

The Filters Fast Odor Killer is a MERV 8 two-stage carbon blended filter designed to "kill" odors such as cigarette smoke, pet odors, irritating gases, cooking odors and other bad odors that might be affecting your indoor air quality.


Discontinued Product Read Description.
Filters Fast Odor Killer Air Filter, 6-pack
Our Price: $76.67
Retail: $79.99
You Save 4%!

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Filters Fast MERV 13 Return Grille Air Filter - 5"
(FFRAG13)

Protect your health, your environment and your wallet with a Filters Fast MERV 13 Return Grille Air Filter. MERV 13 is one of the highest efficiency ratings available, and Filters Fast now offers this rating in a 5" Return Air Grille application.


Discontinued Product Read Description.
Filters Fast MERV 13 Return Grille Air Filter - 5"
Our Price: $39.99
Retail: $49.99
You Save 20%!

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Filters Fast Odor Killer Return Air Grille Filter
(FFRAGOK)

Filters Fast now offers its 5" Return Air Grille Filters with Odor Killer technology, a MERV 8 two-stage carbon blended filter designed to "kill" odors. FFRAGOK.


Discontinued Product Read Description.
Filters Fast Odor Killer Return Air Grille Filter
Our Price: $45.00
Retail: $59.99
You Save 25%!

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Trane 21x23.5x5 Perfect Fit BAYFTAH23M Filter 2pk
(FFC23205TRNM8)

For an economical compatible version of the genuine OEM Trane BAYFTAH23M 21x23.5x5 Perfect Fit Filter, try this MERV 8 Trane 21x23.5x5 Perfect Fit BAYFTAH23M replacement filter.


Discontinued Product Read Description.
Trane 21x23.5x5 Perfect Fit BAYFTAH23M Filter 2pk
Our Price: $50.00
Retail: $70.00
You Save 29%!

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Filters Fast - Filters Fast Furnace Filters

" Thanks for the fast service. All items were included in the order and arrived in good condition. " - Tom, Temperance, MI
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