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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 FC100A1037 Compatible MERV 13 2-PACK
(FFC20255HONM13)

The Honeywell 20x25x5 Filter FC100A1037 is a compatible media air filter with a MERV 13 energy efficiency rating. This replacement filter is also known as part number FFC20255HONM13.


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Honeywell FC100A1037 Compatible MERV 13 2-PACK
Our Price: $82.99
Retail: $90.00
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Holmes HAPF60 Carbon Pre-Filter 4-Pack
(HAPF60)

The Holmes HAPF60 Carbon Pre-Filter 4-Pack fits Holmes HAP615, HAP625, HAP650, HAP675, and others. In an average household 1 Pre-filter will last 3 months--order your year supply today!


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Holmes HAPF60 Carbon Pre-Filter 4-Pack
Our Price: $8.95
Retail: $12.99
You Save 31%!

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Honeywell FC40R1003 Return Grille Filter
(FC40R1003)

The Honeywell FC40R1003 a high-efficiency, replacement filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 20x20x4. Genuine Honeywell Part.


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Honeywell FC40R1003 Return Grille Filter
As Low As: $43.50
Retail: $73.34
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Trane Perfect Fit BAYFTFR21M Compat. 21x27x5 2pk
(FFC21275TRNM11)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTFR21M or FLR06070, which is a 21x27x5 Air Filter used in several Trane Air Cleaners


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Trane Perfect Fit BAYFTFR21M Compat. 21x27x5 2pk
Our Price: $99.00

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Filters Fast MERV 8 Pleated Filters 6 PACK
(FFM8Pleat)

With an initial pressure drop of around .17, these Filters Fast 2" MERV 8 Pleated Panel Filters are comparable to or an upgrade over such other pleat filters as the American Air or AmAir PerfectPleat, the Airguard Xtreme Pleated Panel Filters ...


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Filters Fast MERV 8 Pleated Filters 6 PACK
Our Price: $49.99
Retail: $69.99
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Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
(FFC215215TRNM8)

This Trane Perfect Fit 21x21.5x5 BAYFTAH21M is an economical compatible version of the genuine OEM Trane Perfect Fit 21.5x21x5 Filter.


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Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
Our Price: $63.99
Retail: $70.00
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Filtrete 67726- Eureka AS MicroAllergen - 3 Bags
(67726-6)

The Filtrete 67726-6 are replacement vacuum bags that fit the following models of vacuum cleaners: Eureka Air speed Bagless Upright Vacuum Cleaner Model 68155 Eureka Air speed Bagless Upright Vacuum Cleaner Model 84404 The Filtrete 67726- Eur


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Filtrete 67726- Eureka AS MicroAllergen - 3 Bags
Our Price: $3.95
Retail: $5.99
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Lennox X6667 MERV 11 Air Filter Media Replacement
(X6667)

The Lennox X6667 MERV 11 Air Filter Media Replacement is a replacement air filter for Lennox Healthy Climate PureAir PCO-20 air cleaners. This box media utilizes a MERV 11 pleated filter that captures particles as small as 0.3 microns in size.


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Lennox X6667 MERV 11 Air Filter Media Replacement
Our Price: $31.20
Retail: $39.99
You Save 22%!

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Honeywell 16x25x5 Filter FC100A1029 - MERV 8 2pk
(FFC16255HONM8)

The Honeywell 16x25x5 Filter FC100A1029 is a compatible version of the OEM Honeywell 16x25x5 FC100A1029 Air Filter. This filter is supported by a 30 gauge galvanized expanded metal grid.


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Honeywell 16x25x5 Filter FC100A1029 - MERV 8 2pk
Our Price: $41.73
Retail: $59.99
You Save 30%!

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Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
(FFC21275TRNM8)

The Trane 21x27x5 Perfect Fit BAYFTFR21M Filter is an economical compatible alternative to the genuine OEM Trane 21x27x5 Perfect Fit BAYFTFR21M Filter.


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Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
Our Price: $65.00
Retail: $70.00
You Save 7%!

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Lennox X8790 MERV 16 Air Filter Replacement
(X8790)

The Lennox X8790 MERV 16 Air Filter Replacement is a replacement air filter for the Lennox PCO14-23 PureAir Air Filtration System. This furnace filter measures approximately 20" x 21" x 5" and features a MERV 16 rating. A higher MERV rating results


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Lennox X8790 MERV 16 Air Filter Replacement
Our Price: $96.00
Retail: $229.00
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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
(50000293-004)

The Honeywell 50000293-004 Post Filter 12.5x20 2-Pack is a replacement post filter for the 20x25 and 20x12.5 F300E and F50F air cleaners. The Honeywell post filter increases the efficiency of your Honeywell electronic air purifier model and has only


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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
Our Price: $40.09
Retail: $44.99
You Save 11%!

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Carrier GAPCCCAR2420 Air Purifier Filter
(GAPCCCAR2420)

The Carrier GAPCCCAR2420 Air Purifier Filter is a genuine OEM factory replacement air filter for the Carrier Infinity Air Purifier, Bryant Perfect Air Purifier, as well as other compatible air purifiers made by BDP, Payne, Day and Night Infinity, an


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Carrier GAPCCCAR2420 Air Purifier Filter
Our Price: $92.27
Retail: $119.99
You Save 23%!

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Lennox H/C X6664 MERV 10 Air Filter Replacement
(X6664)

The Lennox H/C X6664 MERV 10 Air Filter Replacement is a replacement air filter for the Lennox PCO-12C PureAir air cleaner. This pleated air filter features a MERV 10 rating and can trap airborne particulates down to as small as 0.3 microns.


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Lennox H/C X6664 MERV 10 Air Filter Replacement
Our Price: $25.99
Retail: $104.00
You Save 75%!

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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
(FFC162766SG)

The Filters Fast Compatible 16x27x6 MERV 11 Air Filter can be used as an upgrade for the Aprilaire Space Gard 2400. Upgrade your Space Gard AC filter today to the pre-assembled, easy to install Filters Fast Space Gard Compatible 16x27x6!


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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
Our Price: $45.00
Retail: $59.99
You Save 25%!

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Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
(FFC21235TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTAH23M or FLR06073, which is a 21x23.5x5 Air Filter used in several Trane Air Cleaner.


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Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
Our Price: $98.00

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FF 30900 Filter Replacement
(FF 30900)

The FF 30900 Filter Replacement is a compatible version of the Hunter 30900 HEPAtech Purifier Filter.


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FF 30900 Filter Replacement
Our Price: $15.99
Retail: $24.99
You Save 36%!

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Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
(FFC20255TABM13)

The Trion 20x25x5 Air Bear Furnace Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 20x25x5, 255649-102.


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Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
Our Price: $74.99
Retail: $80.00
You Save 6%!

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Trion Air Bear Cub Filter 16x25x5 MERV 11
(259112-105)

This Trion Air Bear 259112-105 Filter is the correct replacement for the following air cleaning system: Trion Air Bear Duct Mount Media Air Cleaner


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Trion Air Bear Cub Filter 16x25x5 MERV 11
Our Price: $28.95

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Lennox X0445 MERV 10 Pleated Furnace Filter Media
(X0445)

This Lennox X0445 MERV10 Pleated Furnace Filter Media is a part of the Lennox “Healthy Climate” line of indoor air quality products. This Lennox Healthy Climate Filter is an expandable media air filter.


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Lennox X0445 MERV 10 Pleated Furnace Filter Media
Our Price: $29.90
Retail: $34.10
You Save 12%!

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General Aire 20x20 MERV10 Filter Media GA100A11
(4354)

The General Air GA100A11 20x20 MERV 10 Filter Media is the replacement filter for Honeywell F25A, F35F, F100F & F200E Media Air Cleaners; Honeywell F100B2024, F100F1020, F100F2036 & F150E1018 Air Cleaners.


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General Aire 20x20 MERV10 Filter Media GA100A11
Our Price: $17.99
Retail: $39.99
You Save 55%!

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Bionaire 900 Replacement Humidifier Filters 2-Pack
(CBW9)

The 900 Humidifier Filters Two-Pack, is a humidifier wick filter that works in your Bionaire Humidifier. The humidifier filter wick works with your Bionaire humidifier to produce the best humidified air quality for your home. These Bionaire


In stock! Ships in 1 business day.
Bionaire 900 Replacement Humidifier Filters 2-Pack
Our Price: $11.99
Retail: $14.99
You Save 20%!

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Lennox X0586 MERV 10 Pleated Media Filter
(X0586)

This Lennox X0586 MERV 10 Pleated Media Filter is a genuine MERV 10 filter offering efficient and effective filtration. This Lennox Pleated Furnace Filter only needs to be replaced every 6 months.


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Lennox X0586 MERV 10 Pleated Media Filter
Our Price: $32.95
Retail: $39.99
You Save 18%!

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Whirlpool 8171433 Air Pre-Filter (Small)
(8171433)

The Whirlpool 8171433 Activated Carbon Air Pre-Filter fits Whirlpool Model AP150 and AP250. This pre-filter pre-cleans the air, reduces odors and filtering out larger particles therefore extending the life of your HEPA filter. Four pack.


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Whirlpool 8171433 Air Pre-Filter (Small)
Our Price: $25.99
Retail: $30.00
You Save 13%!

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Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
(FFC175275TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTFR17M or FLR06069, which is a 17.5x27x5 Air Filter used in several Trane Air Cleaner.


In Stock! Ships in 1 to 2 business days.
Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
Our Price: $97.99
Retail: $99.99
You Save 2%!

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