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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.


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Air Filters product list


Honeywell 209894 Replacement 16x20 Air Filter
(209894 R)

The Honeywell 209894 Replacement 16x20 Air Filter is a replacement furnace air filter for use with Honeywell 16 x 20 Air Cleaners, including the Honeywell F100F1004, F100B1008, F150E1000, F100F2028, and other models. This Honeywell furnace filter, a


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Honeywell 209894 Replacement 16x20 Air Filter
As Low As: $29.99
Retail: $49.99
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Whirlpool 1183051, 1187018 HEPA Filter
(1183051)

The Whirlpool Whispure 1183051 HEPA Filter fits Whirlpool Model AP250. The 1183051 helps effectively reduce airborne irritants such as smoke, dust, pet dander, pollen, mold spores, and fabric fibers.


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Whirlpool 1183051, 1187018 HEPA Filter
Our Price: $69.99
Retail: $79.99
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Honeywell HFC40R1011 Return Grille Filter 20"x25"
(HFC40R1011)

The Honeywell HFC40R1011 20"x25" Return Air Grille Filter is a high efficiency replacement air filter for return grille air filtration applications. Honeywell replacement filters efficiently capture harmful airborne particles such as dust, pet dande


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Honeywell HFC40R1011 Return Grille Filter 20"x25"
Our Price: $50.99
Retail: $60.00
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Honeywell FC40R1037 12x24 Return Air Grille Filter
(FC40R1037)

The Honeywell FC40R1037 Return Aire Grille Filter is a high efficiency, replacement for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x24x4. Genuine Honeywell Part.


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Honeywell FC40R1037 12x24 Return Air Grille Filter
Our Price: $40.50
Retail: $45.00
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Bionaire A2001D Replacement Air Cleaner Filter
(A2001D R)

The Bionaire A2001D Replacement Air Cleaner Filter fits the following model of air cleaner: Bionaire SE2080 This Bionaire air purifier filter is a dual filter, with a pleated filter as well as a carbon filter. The Bionaire A2001D has approxima


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Bionaire A2001D Replacement Air Cleaner Filter
Our Price: $19.99
Retail: $29.99
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FiltersFast Brand Trion 16x25x3 Air Bear MERV13 3-Pack
(FFC16253TABM13)

The FiltersFast Brand Trion 16x25x3 Air Bear MERV13 3-Pack Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 16x25x3, 255649-101.


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FiltersFast Brand Trion 16x25x3 Air Bear MERV13 3-Pack
Our Price: $83.00
Retail: $100.00
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FilterFast Trane 21.5x21x5 Perfect Fit BAYFTAH21M M13
(FFC215215TRNM13)

The FilterFast Brand Trane 21.5x21x5 Perfect Fit Filter BAYFTAH21M is a compatible economical alternative for the genuine Trane 21.5x21x5 Perfect Fit Filter that comes in a 2-pack value set.

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FilterFast Trane 21.5x21x5 Perfect Fit BAYFTAH21M M13
Our Price: $110.00
Retail: $140.00
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Lennox 92X08 HEPA 40/60 Foam PreFilter
(92X08)

The Lennox 92X08 HEPA 40/60 Foam PreFilter is a replacement foam pre-filter for the HEPA 40 and HEPA 60 Lennox Healthy Climate Indoor Air Quality HEPA systems. Contaminated air passes through this carbon pre-filter, allowing it trap large dirt.


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Lennox 92X08 HEPA 40/60 Foam PreFilter
Our Price: $35.99
Retail: $39.25
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Holmes HAPF600 HEPA Filter for Harmony Series
(HAPF600)

The Holmes HAPF600 HEPA Filter fits new Harmony Series Modular Air Purifiers HAP615, HAP625, HAP650, HAP675, HAP725, HAP750, HAP1625, HAP1650, HAP1750, HAP1725 and replaces GE Brand 10633, 106643, and 106653.


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Holmes HAPF600 HEPA Filter for Harmony Series
Our Price: $24.00
Retail: $24.99
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Trion Air Bear Right Angle Media Air Cleaner
(447380-010)

The Trion Air Bear Right Angle Media Air Cleaner, part number 447380-002, provides a clean and controlled indoor air environment in your home. Ideal for installations that normally require a 90 degree duct adaptor.

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Trion Air Bear Right Angle Media Air Cleaner
Our Price: $122.83
Retail: $199.99
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Honeywell 209989 Air Cleaner Pre-Filter - 16x20 2-Pack
(209989)

The Honeywell 209989 Air Cleaner Pre-Filter - 16x20 includes two 16" x 10" pre-filters for Honeywell 16" x 20" air cleaner models. This Honeywell pre-filter trap larger particulates in your air to extend the life of your air filter. This air cleaner


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Honeywell 209989 Air Cleaner Pre-Filter - 16x20
Our Price: $63.20

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FiltersFast Brand Trane 24.5x27x5 BAYFTFR24M2A 2 Pack
(FFC245275TRN)

The FiltersFast Brand Trane 24.5x27x5 BAYFTFR24M2A 2 Pack compatible air filter captures airborne pollutants that can cause a negative impact on respiratory health


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FiltersFast Brand Trane 24.5x27x5 BAYFTFR24M2A 2 Pack
Our Price: $54.99
Retail: $59.95
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Honeywell FC40R1102 Return Grille Filter-14x14x3
(FC40R1102)

The Honeywell FC40R1102 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the AC filter. Nominal Dimension 14x14x4. Genuine Honeywell Part.


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Honeywell FC40R1102 Return Grille Filter-14x14x3
As Low As: $27.17
Retail: $34.99
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Filters Fast 16x25x5 MERV 8 Air Filter 2-Pack
(FFC16255HON OKGM)

The Filters Fast 16x25x5 MERV 8 Air Filter 3-Pack is a replacement pack of compatible air filters that is an upgrade the Honeywell FC100A1029 and Carrier FILCCCAR0016 air filters. This 3 pack of 16" x 25" x 5" filters features a MERV 8 rating and


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Filters Fast 16x25x5 MERV 8 Air Filter 2-Pack
Our Price: $49.90
Retail: $94.99
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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter 6-Pack
(92X09)

This Lennox Healthy Climate Filter offers efficient air-filtration performance. This Lennox HEPA 60 carbon filter should be replaced every 2-5 years.


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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter
Our Price: $220.20

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Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
(BAYFTFR21P4A)

The Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1 fits several air cleaner models made by Trane. This Trane furnace filter measures approximately 21" x 27" x 1" and has pleats for the purification of your indoor air. This Trane Perfect Fit filter


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Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
Our Price: $20.90

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TopTech DTT-FM-1625 16x25x4 MERV 11 Filter
(DTT-FM-1625)

The TopTech DTT-FM-1625 16x25x4 MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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TopTech DTT-FM-1625 16x25x4 MERV 11 Filter
Our Price: $32.99
Retail: $45.99
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Trion Air Bear Media AC Filter 16x25x3 6-Pack
(255649-101 6pack)

The Trion Air Bear Media AC Filter 16x25x3 part number 255649-101 is a genuine Trion Air Bear pleated media filter. The 255649101 can be used in Trion models Air Bear TM and Air Bear Cub. Replaces 229990-101 and 229990-001 as an upgrade.

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Trion Air Bear Media AC Filter 16x25x3 6-Pack
Our Price: $99.95
Retail: $132.00
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FiltersFast Brand F825-0548 White Rodgers 16x26x5 2pk
(FFC16265WR)

The Filters Fast Compatible 16x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0548. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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FiltersFast Brand F825-0548 White Rodgers 16x26x5 2pk
Our Price: $54.25
Retail: $55.25
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Lennox X6669 MERV 16 Pleated Filter Media
(X6669)

The Lennox X6669 is a pleated box filter for your Pureair air cleaner. This air filter box measures 21x26x4 inches and is a pleated air filter. The Lennox x6669 furnace filter box can also be used to upgrade your older Pureair unit to a MERV 16.

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Lennox X6669 MERV 16 Pleated Filter Media
Our Price: $118.83
Retail: $149.99
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Honeywell HRF-AP1 Carbon PreFilter 2-Pack
(HRF-AP1 1 R)

The Honeywell HRF-AP1 Carbon PreFilter 2-Pack is a replacement carbon pre-filter for all models of Honeywell Round Air, Honeywell Quietcare, and Honeywell SilentComfort air purifiers. This two pack of carbon filters is cut-to-fit, reduces common odo


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Honeywell HRF-AP1 Carbon PreFilter 2-Pack
Our Price: $18.99
Retail: $19.99
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Lennox 75X66 Metal Mesh Filter
(75X66)

The Lennox 75X66 Metal Mesh Filter is the correct replacement for the following air cleaner: Lennox Pureair PCO-2OC The Lennox Pureair air cleaner is the only air cleaner made that destroys odors and VOC's, and has a MERV rating of MERV 16.

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Special Order. Ships in 8 days.
Lennox 75X66 Metal Mesh Filter
Our Price: $153.00
Retail: $199.99
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FiltersFast Brand F825-0549 White Rodgers 20x26x5 2Pack
(FFC20265WR)

The Filters Fast Compatible 20x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0549. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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FiltersFast Brand F825-0549 White Rodgers 20x26x5 2Pack
Our Price: $72.99
Retail: $79.99
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Lennox X5424 MERV 16 Pleated Furnace Filter Media
(X5424)

This Lennox X5424 MERV 16 Pleated Furnace Filter Media needs to be replaced every 12 months. The Lennox MERV 16 Filter is a genuine Lennox Healthy Climate boxed media air cleaner.


Special Order. Ships in 18 days.
Lennox X5424 MERV 16 Pleated Furnace Filter Media
Our Price: $99.95
Retail: $122.45
You Save 18%!

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GeneralAire 4556 MERV 11 Replacement For GeneralAire 4531
(4531)

The General Aire 5FM2020 MERV10 Media Cartridge measures 20"x20"x5", and is used on GeneralAire MAC 2020 Series and TRION AirBear Supreme 20x20 Systems. This General Aire filter will reduce airborne particulates to provide healthier indoor air.


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GeneralAire 4556 MERV 11 Replacement For GeneralAire 4531
Our Price: $34.99
Retail: $49.99
You Save 30%!

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Filters Fast - Air Filters

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