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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 X2678 HEPA 20 Charcoal Carbon Filter
(X2678)

The Lennox X2678 HEPA 20 Charcoal Carbon Filter is a replacement charcoal carbon filter for the Lennox Healthy Climate HEPA 20 Bypass Filtration Unit. This is an inner filter used in the third stage of filtration for the removal of odors


Special Order. Ships in 9 days.
Lennox X2678 HEPA 20 Charcoal Carbon Filter
Our Price: $36.00
Retail: $40.28
You Save 11%!

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Lennox X8310 MERV 10 Expandable Filter Replacement 4-Pack
(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: $119.80

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Trane 24.5x27x5 BAYFTFR24M2A Comp Trane 2-Pack
(FFC245275TRN)

The Trane BAYFTFR24M2A compatible air filter captures airborne pollutants that can cause a negative impact on respiratory health


In Stock! Ships in 1 to 2 business days.
Trane 24.5x27x5 BAYFTFR24M2A Comp Trane 2-Pack
Our Price: $54.99
Retail: $59.95
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Filters Fast 5" Trane BAYFTFR21M Compatible 2-Pack
(FFC21275TRN OKGM)

The Filters Fast 5" Trane Perfect Fit BAYFTFR21M Compatible FFC21275TRN OKGM fits the following: any air cleaner that calls for a 21" x 27" x 5" filter This Filters Fast air filter also replaces the Trane Perfect Fit BAYFTFR21M filter. This Tr


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Filters Fast 5" Trane BAYFTFR21M Compatible 2-Pack
Our Price: $66.66
Retail: $104.99
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Hunter 30925 HEPAtech Purifier Filter
(30925)

The Hunter 30925 HEPAtech v Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


In Stock! Ships in 10 to 11 business days.
Hunter 30925 HEPAtech Purifier Filter
Our Price: $23.00
Retail: $34.00
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Filters Fast 5" Trane BAYFTAH21M Compatible 2-Pack
(FFC215215TRN OKGM)

The Filters Fast 5" Trane PF BAYFTAH21M Compatible FFC215215TRN OKGM fits the following: Any air cleaner that requires a 21" x 21.5" x 5" filter This Filters Fast air filter also replaces the Trane Perfect Fit BAYFTAH21M filter. This air filte


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Filters Fast 5" Trane BAYFTAH21M Compatible 2-Pack
Our Price: $64.66
Retail: $99.99
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Trane 21x23x5 Perfect Fit Filter BAYFTAH23M M13 x2
(FFC21235TRNM13)

The Trane 21x23x5 Perfect Fit Filter BAYFTAH23M is a compatible version of the genuine Trane Perfect fit 21x23x5 Air Filter.

Free shipping within the continental United States!

In Stock! Ships in 1 to 2 business days.
Trane 21x23x5 Perfect Fit Filter BAYFTAH23M M13 x2
Our Price: $110.00
Retail: $140.00
You Save 21%!

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White Rodgers 16x26x5 Filter F825-0548 2-Pack
(FFC16265WRMM13)

The White Rodgers 16x26x5 Air Filter F825-0548 is a compatible economical alternative to the genuine 16x26x5 air furnace filter.


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White Rodgers 16x26x5 Filter F825-0548 2-Pack
Our Price: $70.00
Retail: $90.00
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Lennox X4137 HEPA 20 Carbon PreFilter Replacement
(X4137)

The Lennox X4137 HEPA 20 Carbon PreFilter Replacement is a replacement carbon pre-filter for the Lennox Healthy Climate HEPA 20 Filtration System. This carbon pre-filter is the first stage of the HEPA 20 filtration process.


Special Order. Ships in 10 days.
Lennox X4137 HEPA 20 Carbon PreFilter Replacement
Our Price: $36.67
Retail: $46.95
You Save 22%!

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Lennox X0581 MERV 11 Pleated Furnace Filter Media 6-Pack
(X0581)

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


In stock! Ships in 1 business day.
Lennox X0581 MERV 11 Pleated Furnace Filter Media
Our Price: $150.60

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GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
(4521)

The General Air 3FM1625 MERV8 Filter Cartridge measures 16"x25"x3", and is the correct filter for General Aire MAC1200 Series Air Cleaners. This General Aire filter will dramatically reduce airborne contaminates to provide much healthier indoor air.


In Stock! Ships in 7 to 8 business days.
GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
Our Price: $19.99
Retail: $29.99
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Bionaire HAPF60 R Air Purifier Carbon Filter
(Bionaire HAPF60 R)

The Bionaire HAPF60 R Air Purifier Carbon Filter is a replacement air purifier filter that fits several models of Holmes air cleaners. This universal carbon pre-filter measures approximately 6.6" x 1.8" x 11.2" and helps deodorize the air through th


In stock! Ships in 1 business day.
Bionaire HAPF60 R Air Purifier Carbon Filter
Our Price: $8.95
Retail: $12.99
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GE WB02X10733 Microwave Filter Compatible
(OEMRCR0613)

This Microwave Filter Replacement (OEMRCR0613) made by American Metal Filter Company is a compatible replacement microwave filter primarily for the GE WB02X10733 filter. It is a recirculating charcoal carbon microwave filter for use with non-ducted


In Stock! Ships in 14 to 15 business days.
GE WB02X10733 Microwave Filter Compatible
Our Price: $14.99
Retail: $19.99
You Save 25%!

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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


Special Order. Ships in 26 days.
Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
Our Price: $19.90
Retail: $19.99
You Save 0%!

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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
(40120101)

This Hoover Power-Drive WindTunnel Vacuum Final Filter is a replacement vacuum final filter for Hoover Self-Propelled WindTunnel Upright vacuums with the Hoover Allergen Filtration System.


Special Order. Ships in 5 days.
Hoover PowerDrive WindTunnel HEPA Vacuum Filter
Our Price: $6.97
Retail: $19.99
You Save 65%!

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Honeywell 50000293-003 Post Air Filter - 10x20 2pk 2-Pack
(50000293-003)

The Honeywell 50000293-003 is a post filter that fits the following electronic air cleaner models: Honeywell F50F Honeywell F58F Honeywell F300 The Honeywell 50000293-003 Post Air Filter - 10x20 improves the performance and efficiency of the


In Stock! Ships in 7 to 8 business days.
Honeywell 50000293-003 Post Air Filter - 10x20 2pk
Our Price: $83.98

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GE WB02X10776 Compatible Microwave Filter
(OEMRCP0410)

This is a Replacement Microwave Filter (OEMRCP0410) made by American Metal Filter Company which is a compatible microwave filter replacement primarily for the GE WB02X10776 filter. This microwave filter is a combination filter composed of


In Stock! Ships in 14 to 15 business days.
GE WB02X10776 Compatible Microwave Filter
Our Price: $11.99
Retail: $14.99
You Save 20%!

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Carrier 356066-0601 EACBAXCC0020 PreFilter 2pk 2-Pack
(356066-0601)

The Carrier 356066-0601 Pre Filter is a genuine OEM factory replacement pre filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0020 Electronic Air Cleaner.


Special Order. Ships in 19 days.
Carrier 356066-0601 EACBAXCC0020 PreFilter 2pk
Our Price: $66.02

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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.


In stock! Ships in 1 business day.
General Aire 20x25 MERV10 Filter Media GA100A37
Our Price: $29.99
Retail: $39.99
You Save 25%!

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Honeywell FC40R1169 14x30 Return Grille Air Filter 5-Pack
(FC40R1169)

The Honeywell FC40R1169 14x30 Return Grille Air Filter is a replacement air filter that fits most return filter grilles. This return air filter grille measures 14" x 30" and features a MERV 10 rating for the reduction of airborne contaminants. The H


In stock! Ships in 1 business day.
Honeywell FC40R1169 14x30 Return Grille Air Filter
Our Price: $164.75

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White Rodgers 20x26x5 F825-0549 MERV 13 2-Pack
(FFC20265WRM13)

The White Rodgers 20x26x5 Air Filter F825-0549 is a compatible alternative that's a part of the White Rodgers F825 Series residential air cleaner replacement filters.


In Stock! Ships in 1 to 2 business days.
White Rodgers 20x26x5 F825-0549 MERV 13 2-Pack
Our Price: $80.00
Retail: $100.00
You Save 20%!

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Trane 21x27x5 Perfect Fit Filter BAYFTFR21M M13 x2
(FFC21275TRNM13)

The Trane 21x27x5 Perfect Fit Filter BAYFTFR21M is an economical compatible version of the genuine Trane 21x27x5 Perfect Fit Air Filter.

Free shipping within the continental United States!

In Stock! Ships in 1 to 2 business days.
Trane 21x27x5 Perfect Fit Filter BAYFTFR21M M13 x2
Our Price: $110.00
Retail: $140.00
You Save 21%!

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Lennox 92X10 40/60 HEPA Filter Replacement
(92X10)

This Lennox Charcoal Carbon Filter 92X10 is designed to capture 99.97% of particulates down to 0.3 micron that pass through it. The Lennox Healthy Climate filter should be replaced every 2-5 years.

Free shipping within the continental United States!

Special Order. Ships in 8 days.
Lennox 92X10 40/60 HEPA Filter Replacement
Our Price: $259.99
Retail: $284.96
You Save 9%!

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Honeywell 32001 Carbon PreFilter 2-Pack
(Honeywell 32001 1 R)

The Honeywell 32001 Carbon PreFilter 2-Pack is a high quality carbon pre-filter that removes household odors and other impurities. This Honeywell 32001 Carbon PreFilter 2-Pack should be replaced every three months for optimum performance.


In stock! Ships in 1 business day.
Honeywell 32001 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Honeywell 35200 Carbon PreFilter 2-Pack
(Honeywell 35200 1 R)

The Honeywell 35200 is the correct replacement for the following air purifiers: Honeywell HEPA Air Purifier Cleaners


In stock! Ships in 1 business day.
Honeywell 35200 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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