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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


Filters Fast 4-inch MERV 8 Air Filters 6-Pack
(FFM8PLEAT 4)

The Filters Fast 4-inch MERV 8 4"Air Filters 6-pack is compatible with: Aprilaire Space-Gard Trion Air Bear Honeywell and other top name brand air conditioning filters. Usable in residential, commercial, and industrial applications, the


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Filters Fast 4-inch MERV 8 Air Filters 6-Pack
Our Price: $62.99
Retail: $69.99
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GeneralAire HF500 HEPA Filter for AC500
(4620)

The GeneralAire HF500 HEPA Filter for AC500 is a replacement air filter for the GeneralAire Model AC500 Air Cleaner. This HEPA filter is 99.7% efficient at reducing airborne particles down to 0.30 microns. This HEPA air filter, also known as the RHF


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GeneralAire HF500 HEPA Filter for AC500
Our Price: $94.62
Retail: $149.99
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Trane 24x26x5 Perfect Fit BAYFTFR24M Filter 2pk
(FFC24265TRNM8)

The Trane MERV 8 24x26x5 Perfect Fit BAYFTFR24M Filter is the compatible alternative of the genuine OEM 24x26x5 Trane Perfect Fit BAYFTFR24M Filter.


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Trane 24x26x5 Perfect Fit BAYFTFR24M Filter 2pk
Our Price: $50.00
Retail: $70.00
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Trane 21x26x5 Perfect Fit Filter BAYFTAH26M M13 x2
(FFC26215TRNM13)

If you are looking for an economical compatible version of the genuine Trane/American Standard BAYFTAH26M Perfect Fit Air Filter, try this Trane 21x26x5 Perfect Fit Filter BAYFTAH26M with a MERV 13 energy efficiency rating.

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Trane 21x26x5 Perfect Fit Filter BAYFTAH26M M13 x2
Our Price: $110.00
Retail: $140.00
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Honeywell FC40R1128 - Return Grille Filter 14x24 5-Pack
(FC40R1128)

The Honeywell FC40R1128 is a return air grille filter that fits the following: Any return air grille that uses a 14 inch x 24 inch x 4 inch filter The Honeywell FC40R1128 - Return Grille Filter 14x24 has a Minimum Efficiency Reporting Value (M


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Honeywell FC40R1128 - Return Grille Filter 14x24
Our Price: $137.85

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White Rodgers 16x26x5 Filter F825-0548 2-Pack
(FFC16265WRM8)

If you are looking for an economical compatible alternative for the OEM White Rodgers 16x26x5 Air Furnace Filter try this White Rodgers 16x26x5 Furnace Filter Replacement F825-0548.


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White Rodgers 16x26x5 Filter F825-0548 2-Pack
Our Price: $57.00
Retail: $59.99
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GeneralAire HMK500 Filter Replacement Kit 2-Pack 2-Pack
(4610)

The GeneralAire HMK500 is the correct replacement for the following air cleaner: GeneralAire AC500 Whole House HEPA Filtration System.


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GeneralAire HMK500 Filter Replacement Kit 2-Pack
Our Price: $79.98

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6-Pack Trion Air Bear Cub Filter 16x25x3 MERV 11
(259112-101 6Pack)

The Trion Air Bear Cub Filter 16x25x3 MERV 11 6-Pack can be used Trion AirBear Air Cleaners and all air cleaners that need 16"x25"x3" air filters. These Trion filters are an economical upgrade from simple poly-pleated or fiberglass filters.


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6-Pack Trion Air Bear Cub Filter 16x25x3 MERV 11
Our Price: $89.99
Retail: $109.99
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F825-0548 White Rodgers Compatible 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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F825-0548 White Rodgers Compatible 16x26x5, 2pk
Our Price: $54.25
Retail: $55.25
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Carrier FILCCCAR0016 Air Purifier Filter
(FILCCCAR0016)

The Carrier FILCCCAR0016 Air Purifier Filter is a genuine OEM factory replacement air filter for Bryant, Payne, Day-Night, as well as certain Honeywell, Space-Gard, and Trion air purifiers. It fits numerous units including model numbers FILBBCAR0016


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Carrier FILCCCAR0016 Air Purifier Filter
Our Price: $29.99
Retail: $39.99
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Lennox X8348 MERV 10 Filter Maintenance Kit
(X8348)

The Lennox X8348 MERV 10 Filter Maintenance Kit is a maintenance kit for the Lennox PCO-20C PureAir Air Purification System. This PureAir maintenance kit includes: one MERV 10 filter, also known as part number X6667; one catalyst insert, also known

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Lennox X8348 MERV 10 Filter Maintenance Kit
Our Price: $224.30
Retail: $254.95
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General Aire 16x25 MERV10 Filter Media GA100A29
(4352)

The General Aire GA100A29 16x25 MERV10 Filter Media is the correct replacement filter for Honeywell F100 Series and Honeywell F150 Series Media Style Air Cleaners. These filters remove airborne particles to 1.0 micron to provide healthier indoor air.


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General Aire 16x25 MERV10 Filter Media GA100A29
Our Price: $29.99
Retail: $39.99
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Aprilaire #401 Compatible Media Filter 2-Pack
(SG4PR-B)

The Space-Gard MERV 11 Compatible Media Filter 2-Pack is a two pack of compatible replacement air filters for the Aprilaire Model 2400 Air Cleaner. Model #401.


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Aprilaire #401 Compatible Media Filter 2-Pack
Our Price: $89.90
Retail: $94.40
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Aprilaire #401 Compatible Media Filter 2-Pack
(SG4PR-B)

The Space-Gard MERV 11 Compatible Media Filter 2-Pack is a two pack of compatible replacement air filters for the Aprilaire Model 2400 Air Cleaner. Model #401.


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Aprilaire #401 Compatible Media Filter 2-Pack
Our Price: $89.90
Retail: $94.40
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Lennox X0444 MERV 11 Pleated Furnace Filter Media 10-Pack
(X0444)

The Lennox X0444 MERV 10 Pleated Furnace Filter Media is a filter for your HVAC system. This furnace filter media is known as the x0444 and uses a MERV 10 air filter.The MERV 10 rating will provide your home with significant air cleaning capability


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Lennox X0444 MERV 11 Pleated Furnace Filter Media
Our Price: $289.50

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GeneralAire 5FM2025 MERV 8 Filter Media Cartridge
(4501)

The General Aire 5FM2025 MERV 10 Filter Media Cartridge measures 20"x25"x5", and is the correct replacement part for General Air MAC 2000 and MACL Air Cleaner Systems; and TRION AirBear Supreme 2000 Air Cleaner Systems.


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GeneralAire 5FM2025 MERV 8 Filter Media Cartridge
Our Price: $68.99
Retail: $79.99
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Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack 2-Pack
(203369)

The Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack is a replacement pre-filter for the Honeywell model F50 and F300 air cleaners. This Honeywell air filter traps larger particles in your air to help improve your overall indoor air quality and incre


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Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack
Our Price: $43.31

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Trane 21.5x21x5 Perfect Fit Filter BAYFTAH21M M13
(FFC215215TRNM13)

The 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.

Free shipping within the continental United States!

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Trane 21.5x21x5 Perfect Fit Filter BAYFTAH21M M13
Our Price: $110.00
Retail: $140.00
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Honeywell FC40R1078 24x24 Return Air Grille Filter 5-Pack
(FC40R1078)

The Honeywell FC40R1078 Return Air Grille Filter is a high efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 24x24x4.


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Honeywell FC40R1078 24x24 Return Air Grille Filter
Our Price: $207.50

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Universal Carbon Range Hood Filter - Trim to Fit
(RYM1518C)

This Universal Carbon Oven Range Hood Filter (RYM1518C) is a trim to fit oven range oven carbon filter for use with many over the range oven hoods (ducted and non-ducted), microwave ovens, and other similar applications requiring odor elimination. I


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Universal Carbon Range Hood Filter - Trim to Fit
Our Price: $14.99
Retail: $19.99
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Honeywell FC40R1094 12x12x3 Return Grille Filter
(FC40R1094)

The Honeywell FC40R1094 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x12x4. Genuine Honeywell Part.


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Honeywell FC40R1094 12x12x3 Return Grille Filter
As Low As: $37.50
Retail: $50.00
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GE WB02X10956 Compatible Microwave Filter
(OEMRCP0303)

This Microwave Filter Replacement (OEMRCP0303) made by American Metal Filter Company is a compatible replacement microwave filter primarily for the GE WB02X10956 filter. It is a recirculating charcoal carbon microwave filter for use with non-ducted


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GE WB02X10956 Compatible Microwave Filter
Our Price: $7.99
Retail: $9.99
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Kenmore 83156 Carbon PreFilter 2-Pack
(KENMORE 83156 1 R)

The Kenmore 83156 Carbon PreFilter 2 Pack works with your Kenmore 83250 and 85250 model Air Purifier. These replacement carbon prefilters measure approximately 14.5" x 11" inches and will protect your HEPA filter while removing harmful particles and


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Kenmore 83156 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Free Flow Room Air Conditioner Filter - 15" x 24"
(93524)

This Free Flow Room Air Conditioner Filter (1777) is a universal 15" x 24" cut to fit black foam room air conditioner filter. It filters dirt, dust, soot, pollen, and other allergens.


Special Order. Ships in 6 days.
Free Flow Room Air Conditioner Filter - 15" x 24"
Our Price: $3.00
Retail: $5.99
You Save 50%!

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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


In stock! Ships in 1 business day.
Bionaire A2001D Replacement Air Cleaner Filter
Our Price: $19.99
Retail: $29.99
You Save 33%!

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Filters Fast - Air Filters

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