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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


Lennox X0581 MERV 10 Pleated Furnace Filter Media
(X0581)

This Lennox X0581 MERV 10 Pleated Furnace Filter Media provides high efficiency filtration. This Merv 10 furnace filter requires no assembly or combs.


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Lennox X0581 MERV 10 Pleated Furnace Filter Media
Our Price: $25.10
Retail: $29.99
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Lennox X8311 MERV 10 Expandable Filter Replacement
(X8311)

The Lennox X8311 is the correct filter for the following air cleaner: Lennox Healthy Climate HCXF14 Air Filtration System


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Lennox X8311 MERV 10 Expandable Filter Replacement
Our Price: $32.39
Retail: $38.71
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Hunter 30930 HEPAtech Purifier Filter
(30930)

The Hunter 30930 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


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Hunter 30930 HEPAtech Purifier Filter
Our Price: $25.95
Retail: $29.95
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Lennox X8310 MERV 10 Expandable Filter Replacement
(X8310)

The Lennox x8310 expandable MERV 10 filter is for use in your homes filter system. Also known as the healthy climate furnace filter, the X8310 measures 20x25x5 inches. This furnace filter media will protect your home from particles such as du


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Lennox X8310 MERV 10 Expandable Filter Replacement
Our Price: $29.95
Retail: $39.50
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Aprilaire SpaceGard 2200 Air Filter - MERV 8 2pk
(FFC20256SGM8)

The Aprilaire SpaceGard 2200 Air Filter is an economical alternative for the OEM Aprilaire 2200 and 2250 Air Filter Media Replacement.


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Aprilaire SpaceGard 2200 Air Filter - MERV 8 2pk
Our Price: $55.99
Retail: $59.99
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Honeywell 20x25x5 Filter FC100A1037 - MERV 8 2pk
(FFC20255HONM8)

The Honeywell 20x25x5 Filter FC100A1037 is the compatible version of the OEM Honeywell 20x25x5 Air Filter FC100A1037.


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Honeywell 20x25x5 Filter FC100A1037 - MERV 8 2pk
Our Price: $44.99
Retail: $60.00
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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: $49.99
Retail: $60.00
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White Rodgers 20x26x5 Filter F825-0549 MERV 8 2pk
(FFC20265WRM8)

The White Rodgers 20x26x5 Air Filter F825-0549 is a compatible alternative for the OEM White Rodgers 20x26x5 Air Filter. This filter is made of fine carbon powder bonded to lofted polyester media for odor reduction.


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White Rodgers 20x26x5 Filter F825-0549 MERV 8 2pk
Our Price: $40.99
Retail: $50.00
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Frigidaire 241504902 Refrigerator Air Filter
(241504902)

The Frigidaire 241504902 is a refrigerator air filtration cartridge that is the correct compatible replacement for the following: Frigidaire EAF1CB The Frigidaire 241504902 Refrigerator Air Filter fits Frigidaire and Electrolux Pure Advantage


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Frigidaire 241504902 Refrigerator Air Filter
Our Price: $11.99
Retail: $14.99
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Honeywell 203369 Pre-Filter 12.5x20x.375 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
Retail: $49.99
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Hamilton Humidifier Evaporator Pad EP-036
(EP-036)

The Hamilton EP-036 is the correct replacement for the following humdifier: Hamilton 10F flow through humidifier The Hamilton Humidifier Evaporator Pad EP-036 is the part of the humidifier that collects moisture and then distributes it into th


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Hamilton Humidifier Evaporator Pad EP-036
Our Price: $13.99
Retail: $19.99
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Lennox X8309 MERV 10 Expandable Filter Replacement
(X8309)

The Lennox X8309 MERV 10 Expandable Filter Replacement is a replacement expandable filter for the Lennox PMAC-20C model air cleaner. This pleated air filter measures approximately 16x25x5 and boasts a MERV 10 rating.


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Lennox X8309 MERV 10 Expandable Filter Replacement
Our Price: $32.39
Retail: $39.50
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GeneralAire 12758 MERV 11 Filter Media Replacement
(4001)

The GeneralAire 12758 MERV 11 Filter Media Replacement is a replacement air filter for the GeneralAire AC1 and AC22 model air cleaners. This replacement filter media features a MERV 11 rating and Micro Fiber construction for the reduction of airborn


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GeneralAire 12758 MERV 11 Filter Media Replacement
Our Price: $48.99
Retail: $63.99
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Honeywell FC40R1144 Return Air Filter - 20x24
(FC40R1144)

The Honeywell FC40R1144 Return Air Filter - 20x24 is a replacement air filter that mounts in most return filter grilles. The Honeywell return air grille filter features four inches of depth, which provides a higher efficiency than standard one inch


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Honeywell FC40R1144 Return Air Filter - 20x24
Our Price: $32.95
Retail: $39.99
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Trane Perfect Fit BAYFTFR17P4A Filter-17.5x27x1
(BAYFTFR17P4A)

The Trane Perfect Fit BAYFTFR17P4A Filter - 17.5x27x1 fits several air cleaner models manufactured by Trane. This Trane Perfect Fit filter is 1 inch and pleated for maximum purification of your air. This Trane furnace filter measures approximately 1


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Trane Perfect Fit BAYFTFR17P4A Filter-17.5x27x1
Our Price: $16.52
Retail: $19.99
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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
(4511)

The GeneralAire 5FM1625 MERV 10 Filter Media Cartridge is the correct replacement filter for the following models of air cleaners: GeneralAire MAC1400 GeneralAire MAC1400M Trion AirBear Supreme 1400 This GeneralAire replacment filter measu


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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
Our Price: $29.99
Retail: $34.99
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Trane Perfect Fit BAYFTFR21M2A Filter-21x27x5
(BAYFTFR21M2A)

The Trane Perfect Fit BAYFTFR21M2A Filter Kit- 21x27x5 features a MERV 8 rating for the reduction of dust, dirt, and various allergens in your air, and the improvement of indoor air quality. This Trane air filter measures approximately 21" x 27" x 5


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Trane Perfect Fit BAYFTFR21M2A Filter-21x27x5
Our Price: $45.39
Retail: $49.99
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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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Lennox X6672 MERV 16 Furnace Filter Replacement
(X6672)

The Lennox X6672 MERV 16 Furnace Filter Replacement is a replacement air filter for the Lennox HCC16028 Healthy Climate True Fit Cabinet. This furnace filter measures approximately 16x25x5 and features a MERV 16 rating for the reduction of particles.

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Lennox X6672 MERV 16 Furnace Filter Replacement
Our Price: $119.90
Retail: $149.95
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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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Lennox X6675 MERV 16 Furnace Filter Replacement
(X6675)

The Lennox X6675 is a MERV 16 filter for your home. This air filter media is also known as a healthy climate air filter and is designed to fit the Lennox HCC20-28 air cleaner model.

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Lennox X6675 MERV 16 Furnace Filter Replacement
Our Price: $128.95
Retail: $149.99
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Lennox X7935 MERV 16 Filter Media Replacement
(X7935)

The Lennox X7935 MERV 16 Filter Media Replacement is a replacement filter media for the Lennox HCC14-23 Healthy Climate True Fit Cabinet. Measuring approximately 20x20x5, this MERV 16 furnace filter box will trap at least 95% of particles.

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Lennox X7935 MERV 16 Filter Media Replacement
Our Price: $118.80
Retail: $149.95
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GE WB02X10700 Compatible Oven Range Hood Filter
(OEMRHP0808)

This is an Oven Hood Range Filter (OEMRHP0808) made by American Metal Filter Company which is a compatible replacement range vent hood filter for the GE WB02X10700 range filter. This oven range hood filter is a combination filter composed of carbon


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GE WB02X10700 Compatible Oven Range Hood Filter
Our Price: $8.99
Retail: $9.99
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Holmes HWF64 Humidifier Filter
(HWF64)

The Holmes HWF64 Humidifier Filter is designed to maintain optimal peformance of your Holmes Humidifier. Fits models HM1645, HM1730, HM1745, HM1750, and HM2200.


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Holmes HWF64 Humidifier Filter
As Low As: $14.99
Retail: $25.95
You Save 42%!

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General Aire 20x25 MERV10 Filter Media GA100A37
(4356)

The GeneralAire GA100A37 MERV10 Filter Media measures 20"x25x4" approx., and is the correct replacement filter for Source 1 S1 MAC 10202505, Trion Air Bear Supreme 2000, Skuttle DBO-0025-020, Ultravation 90-007 & Honeywell FC100A1037 Air Cleaners.


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General Aire 20x25 MERV10 Filter Media GA100A37
Our Price: $29.99
Retail: $39.99
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