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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


Filtrete Micro Allergen Home Air Filter 6-Pack Red
(Red 6-Pack)

The Filtrete Micro Allergen Air Filter blows away the competition when it comes to performance and filtration. The Filtrete "Red" Series Filter features 3M patented, electrostatically charged fibers which attract and retain microscopic particles & .

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Filtrete Micro Allergen Home Air Filter 6-Pack Red
Our Price: $112.99
Retail: $159.99
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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
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Crane Animal Humidifier Filter - HS-1932
(HS-1932)

This Crane Humidifier Filter (HS-1932) is a replacement demineralizing humidifier filter cartridge for the series of animal design Crane Ultrasonic Cool Mist humidifiers such as the Crane Frog Humidifier (EE-3191), the Crane Elephant Humidifier (EE-


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Crane Animal Humidifier Filter - HS-1932
Our Price: $8.99
Retail: $10.99
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Trion 255649-103 Air Bear Media Filter 20x20x5
(255649-103)

Fight air quality problems around your home with the Trion Air Bear 255649-103 replacement air filter media. The 20x20x5 deep pleated design offers greater surface area for a higher capture of airborne particles that contribute to allergies.


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Trion 255649-103 Air Bear Media Filter 20x20x5
As Low As: $19.50
Retail: $35.00
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Skuttle Air Cleaner Filter 25x16x5 DB-25-16
(000-0448-001)

Skuttle 000-0448-001 Air Cleaner Filters measure 25"x16"x5", & effectively reduce airborne particles such as pet dander, mold spores, dust, dust mites, pollen and other allergens from your indoor environment.


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Skuttle Air Cleaner Filter 25x16x5 DB-25-16
Our Price: $22.26
Retail: $24.99
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Trane BAYFTFREXM2 Expandable Replacement-2-Pack
(BAYFTFREXM2)

The Trane BAYFTFREXM2 Expandable Replacement Media is a pair of furnace air filters that can only be used with a Retrofit Frame Kit already installed. This Trane air filter measures approximately 25" in length x 5" in thickness. This Trane Perfect F


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Trane BAYFTFREXM2 Expandable Replacement-2-Pack
Our Price: $52.06
Retail: $59.99
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Honeywell FC100A1003 16x20x5 Pleated Air Filter
(FC100A1003)

The Honeywell FC100A1003 16"x20" Media AC Filter can be used with Honeywell 16 x 20 Air Cleaners including the Honeywell F100F1004, F100B1008, F150E1000, F100F2028, and others. Genuine Honeywell Part.


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Honeywell FC100A1003 16x20x5 Pleated Air Filter
As Low As: $28.99
Retail: $49.99
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Carrier GAPCCCAR2025 Air Filter for GAPAAXCC2025
(GAPCCCAR2025)

The Carrier GAPCCCAR2025 Air Filter is an air purifier filter replacement for the Carrier GAPAAXCC2025 Infinity Air Purifier. It will also fit compatible units by Bryant, Payne, Day-Night, as well as certain Honeywell, Space-Gard, and Trion air puri

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Carrier GAPCCCAR2025 Air Filter for GAPAAXCC2025
Our Price: $100.95
Retail: $149.95
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Trion MERV 8 Comp. Air Bear Furnace Filter-20x20x5
(FFC20205TABM8)

The Trion FFC20205TABM8 20x20x5 MERV 8 Compatible Air Bear Furnace Filter replacement is an economical alternative for the OEM - Trion 255649-103 Air Bear Media Filter 20x20x5.


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Trion MERV 8 Comp. Air Bear Furnace Filter-20x20x5
Our Price: $37.90
Retail: $50.00
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Trane 21x21.5x5 BAYFTAH21M Filter 2-Pack
(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 BAYFTAH21M Filter 2-Pack
Our Price: $63.99
Retail: $70.00
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3-Pack Trion Air Bear Cub Filter 16x25x5 MERV 11
(259112-105 3pack)

The 3-Pack Trion Air Bear Cub Filter 16x25x5 MERV 11 is a replacement filter pack for your Air Bear whole house air cleaner. These Trion Air Bear Cub filters trap common air pollutants inside of the filter, which help allow air to flow through the s


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3-Pack Trion Air Bear Cub Filter 16x25x5 MERV 11
Our Price: $64.99
Retail: $79.99
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Whirlpool 8171434 Large Pre-Filter 4-Pack
(8171434)

Whirlpool Whispure 8171434 Pre-Filters fit Whirlpool Models AP350, AP450, and AP510. This Activated Carbon Pre-filter pre-cleans the air by helping reduce odors as it filters out larger particles, therefore extending the life of your HEPA filter.


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Whirlpool 8171434 Large Pre-Filter 4-Pack
Our Price: $27.99
Retail: $29.99
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Trane Perfect Fit BAYFTAH21M Compat. 21.5x21x5 2pk
(FFC215215TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTAH21M or FLR06072, which is a 21.5x21x5 Air Filter used in several Trane Air Cleaners


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Trane Perfect Fit BAYFTAH21M Compat. 21.5x21x5 2pk
Our Price: $98.00
Retail: $99.00
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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
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Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
(FFC21235TRNM8)

For an economical alternative to the genuine OEM Trane 21x23x5 Perfect Fit BAYFTAH23M Filter, try this compatible Trane MERV 8 21x23x5 Perfect Fit BAYFTAH23M Filter.


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Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
Our Price: $65.00
Retail: $70.00
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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
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Trion Air Bear Media Filter 3-Pack 16x25x5, MERV 8
(255649-105 3pack)

The Trion Air Bear Media AC Filter 16x25x5 part number 255649-105 is a genuine Trion Air Bear pleated media A/C filter. The 255649105 can be used in Trion models Air Bear Supreme 1400 and Trion Air Bear 1400.


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Trion Air Bear Media Filter 3-Pack 16x25x5, MERV 8
Our Price: $59.99
Retail: $111.00
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Universal Cut to Fit Carbon Pre Filter-2-Pack
(R14ALLM)

The Universal Cut to Fit Carbon Pre Filter-2 Pack is a replacement pack of two carbon pre-filters that fit a variety of air purifiers and air cleaners, including models from Bionaire, DeLonghi, Duracraft, Holmes, Honeywell Enviracare, Hunter QuietFl


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Universal Cut to Fit Carbon Pre Filter-2-Pack
Our Price: $16.99
Retail: $19.99
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Honeywell FC40R1029 20x30x3 Return Grille Filter
(FC40R1029)

The Honeywell FC40R1029 is a high-efficiency, replacement filter for return grille applications that will capture airborne particles as small as 0.3 microns in size.


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Honeywell FC40R1029 20x30x3 Return Grille Filter
Our Price: $45.00
Retail: $74.81
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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
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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
(X6670)

This Lennox X6670 Fir Filter Media is able to capture particles as small as 0.3 microns. This Lennox Pleated Filter Media offers greater dust-holding ability.


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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
Our Price: $36.88
Retail: $39.95
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Lennox X0585 MERV 11 Pleated Media Filter
(X0585)

This Lennox Lennox X0585 MERV 10 Pleated Media Filter offers a pleated a design for more efficient and effective filtration.


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Lennox X0585 MERV 11 Pleated Media Filter
Our Price: $33.99
Retail: $39.99
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Carrier GAPCCCAR2020 Air Purifier Filter
(GAPCCCAR2020)

The Carrier GAPCCCAR2020 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 GAPCCCAR2020 Air Purifier Filter
Our Price: $90.09
Retail: $94.59
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Trion 16x25x3 Air Bear Cub Filter - MERV 8 3-Pack
(FFC16253TABM8)

The Trion 16x25x3 Air Bear Cub Filter is an odor ban compatible MERV 8 filter replacement. This Air Bear Cub Filter is also known as part number FFC16253TABM8.


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Trion 16x25x3 Air Bear Cub Filter - MERV 8 3-Pack
Our Price: $39.99
Retail: $59.99
You Save 33%!

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FAPF02 Air Filter, Replacement for FAP02-RS
(FAPF02)

The Filtrete FAPF02 Air Filter is the replacement air cleaning filter for the Filtrete Ultra Clean Air Purifier FAP02-RS, FAP02. This electrostatically charged filter attracts & retains microparticles that can aggravate allergies and ...


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FAPF02 Air Filter, Replacement for FAP02-RS
Our Price: $24.14
Retail: $29.99
You Save 20%!

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Filters Fast - Air Filters

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