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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


BlueAir 14x20x1 High Efficiency Air Filter Kit
(BCST1420)

The BlueAir BCST1420 contains the following: (2) 14 x 20 x 1 filters MX2 particle charger Automated filter check timer The BlueAir 14x20x1 High Efficiency Air Filter Kit turns your air conditioning or heating system into a sophisticated, hig

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BlueAir 14x20x1 High Efficiency Air Filter Kit
Our Price: $149.95
Retail: $199.99
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BlueAir 20x20x1 High Efficiency Air Filter Kit
(BCST2020)

The BlueAir 20x20x1 High Efficiency Air Filter Kit includes two replacement air filters, the MX2 Particle Charger, and an Automated Filter Check Timer. This BlueAir filter kit converts your existing central air system into a high efficiency air puri

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BlueAir 20x20x1 High Efficiency Air Filter Kit
Our Price: $149.95
Retail: $199.99
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BlueAir 20x25x1 High Efficiency Air-Furnace Filter
(BCST2025)

The BlueAir 20x25x1 High Efficiency Air-Furnace Filter is a BlueAir filter kit that includes two replacement air filters, the MX2 Particle Charger, and an Automated Filter Check Timer that will convert your existing central air system into a high ef

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BlueAir 20x25x1 High Efficiency Air-Furnace Filter
Our Price: $149.95
Retail: $199.99
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GeneralAire F1016 MERV 11 Filter Media Cartridge
(4561)

The General Aire F1016 MERV 11 Filter Media Cartridge is the replacement part for the General Air TERSus2000 System. This GeneralAir Filter reduces airborne particles as small as 0.3 micron in order to improve indoor air quality dramatically.


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GeneralAire F1016 MERV 11 Filter Media Cartridge
Our Price: $49.99
Retail: $59.99
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General Aire Important Label EACGM-19
(GeneralAire 4793)

The General Aire Important Label EACGM-19 is a replacement Important Label for the GeneralAire Model GA52F32 Grill Mount Air Cleaner. The GeneralAire EACGM-19 Important Label is an optional component of your GA52F32 air cleaner and is an OEM replace


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General Aire Important Label EACGM-19
Our Price: $13.97
Retail: $19.99
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Trion Duct Mount HE Plus 2000, 455600-001
(455600-001)

The Trion Duct Mount HE Plus 2000, 455600-001 is an Electronic Whole House Air Purification System. The HE Plus 2000 includes an elctronic air flow sensor. This is a genuine Trion product. Learn how the HE Plus 2000 can help you...

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Trion Duct Mount HE Plus 2000, 455600-001
Our Price: $392.99
Retail: $420.00
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Whirlpool Air Purifier Whispure 450 (Large Room)
(AP45030K)

The Whirlpool Whispure 450 (AP45030K) is a home air purifier which filters the dust, dander, pollen, mold spores, smoke, fabric fibers, allergens, and other contaminants in your air. The Whirlpool Whispure 450 air purifier features a True HEPA air pu

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Whirlpool Air Purifier Whispure 450 (Large Room)
Our Price: $249.99
Retail: $289.00
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Honeywell F300E1035 20x25 Electronic Air Cleaner
(F300E1035)

The Honeywell F300E1035 20x25 Electronic Air Cleaner operates with all gas, oil and electric forced warm air furnaces and air conditioning systems.

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Honeywell F300E1035 20x25 Electronic Air Cleaner
Our Price: $639.99
Retail: $699.99
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Honeywell F200E1037 20x25 Whole-Home Air Cleaner
(F200E1037)

The Honeywell F200E1037 20x25 Whole-Home Air Cleaner does not require maintenance except for periodic battery changes and media filter replacement.

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Honeywell F200E1037 20x25 Whole-Home Air Cleaner
Our Price: $229.99
Retail: $299.99
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Honeywell HCM-800P Humidifier
(HCM800-P)

The Honeywell HCM-800 PermaFresh Cool Moisture Humidifier helps relieve discomfort caused by dry air with soothing invisible moisture.


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Honeywell HCM-800P Humidifier
Our Price: $79.99
Retail: $89.99
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Hoover WindTunnel Vacuum Filter - Secondary Micron
(38765019 OEM)

This Hoover WindTunnel Vacuum Filter is a Hoover secondary micron vacuum filter for Hoover WindTunnel vacuums and Hoover Self-Propelled Wind Tunnel vacuum cleaners. Also known by part numbers 38765019 OEM and H-38765019.


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Hoover WindTunnel Vacuum Filter - Secondary Micron
Our Price: $3.99
Retail: $6.99
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Electrolux Air Filter - Cut To Fit
(5303320285)

This Electrolux Air Filter (WCI 5303320285 / FEI 1779) is a universal cut to fit gray foam air filter. It filters dirt, dust, mold, soot, pollen, and other allergens. It is a genuine Electrolux product, though it can also be used with many other bra


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Electrolux Air Filter - Cut To Fit
Our Price: $6.99
Retail: $9.99
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Honeywell 28600 HEPA Air Filter Replacement
(28600)

The Honeywell 28600 HEPA Air Filter Replacement is a genuine Honeywell replacement True HEPA Filter for the Honeywell Enviracaire Portable Air Cleaner models 13000 and 63200 as well as all other air cleaners that use a 10" 1/4 height x 10 1/2" inner


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Honeywell 28600 HEPA Air Filter Replacement
Our Price: $80.60
Retail: $91.99
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Blueair 200/300 Series Particle Filter Replacement
(BAF-200/300SPF)

The Blueair 200/300 Series Particle Filter is a replacement particle air filter that traps dirt, dust, pet dander, bacteria, mold spores, dust mites, and other airborne allergens. It also removes odors and gases from the air. These Blueair 200/300 S


Discontinued Product Read Description.
Blueair 200/300 Series Particle Filter Replacement
Our Price: $49.95
Retail: $59.95
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Blueair 200/300 Series Carbon Filter Replacement
(BAF-200SSM)

The Blueair 200/300 Series Carbon Filter is a replacement carbon air filter that primarily removes odors, gases, and smoke from your air. This filter also traps bacteria, dirt, dust, pet dander, mold spores, dust mites and other airborne allergens

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Blueair 200/300 Series Carbon Filter Replacement
Our Price: $99.95
Retail: $119.95
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Blueair 400 Series Particle Filter Replacement
(BAF-400SPF)

The Blueair 400 Series Particle Filter is a replacement particle air filter that traps dirt, dust, pet dander, bacteria, mold spores, dust mites, and other airborne allergens. It also removes odors and gases from the air. These Blueair 400 Series Pa


Discontinued Product Read Description.
Blueair 400 Series Particle Filter Replacement
Our Price: $59.95
Retail: $69.99
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Blueair 400 Series SmokeStop Filter Replacement
(BAF-400SSM)

The Blueair 400 Series SmokeStop Filter is a replacement carbon air filter that removes smoke, gases, and odors from your air, though it also filters dirt, dust, pet dander, bacteria, mold spores, dust mites, and other airborne allergens. These Blue

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Blueair 400 Series SmokeStop Filter Replacement
Our Price: $119.95
Retail: $129.99
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Blueair 500/600 Series Particle Filters - 3 Pack
(BAPF-501)

This is a three pack of Blueair 500/600 Series Particle Filters which trap dirt, dust, pet dander, bacteria, mold spores, dust mites, hair, pollen, and other airborne allergens. They use a combination of Blueair HEPA filtration and activated carbon


Discontinued Product Read Description.
Blueair 500/600 Series Particle Filters - 3 Pack
Our Price: $79.95
Retail: $89.95
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Blueair 500/600 Series SmokeStop Filters - 3 Pack
(BASS-501)

This is a three pack of Blueair 500/600 Series SmokeStop Filters which remove smoke, gases, and odors from your air, though they also filter dirt, dust, pet dander, bacteria, mold spores, dust mites, and other airborne allergens. These Blueair Smoke

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Discontinued Product Read Description.
Blueair 500/600 Series SmokeStop Filters - 3 Pack
Our Price: $149.95
Retail: $159.99
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Crane Drop Shape Humidifier Filter Replacement
(HS-3161)

This Crane Drop Shape Humidifier Filter (HS-3161) is a replacement demineralizing humidifier filter cartridge made specifically for Drop Shape Crane humidifiers. It helps to reduce the build up of white dust mineral deposits in Crane Drop Shape humi


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Crane Drop Shape Humidifier Filter Replacement
Our Price: $17.99

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3M Filtrete Window Air Conditioner Filter 15x24
(9808)

This 3M Filtrete Window Air Conditioner Filter (9808) is a universal 15" x 24" cut to fit room air conditioner filter replacement. The electrostatically charged fibers of this 3M 9808 air filter more efficiently reduce or remove dirt, dust, soot, po


Discontinued Product Read Description.
3M Filtrete Window Air Conditioner Filter 15x24
Our Price: $6.99
Retail: $19.99
You Save 65%!

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Holmes HAPF35 HEPA Filter Replacement (HAPF35CS)
(HAPF35)

The Holmes HAPF35 HEPA Filter Replacement fits Holmes air purifier models Holmes HAP290 (Holmes HAP-290) and Holmes HAP475 (Holmes HAP-475). The dimensions of this Holmes HEPA filter replacement are approximately 9 1/4" x 9 7/8" x 1 1/8".


Discontinued Product Read Description.
Holmes HAPF35 HEPA Filter Replacement (HAPF35CS)
Our Price: $29.99
Retail: $34.99
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3M Filtrete FAPF00C Filters for FAP00-RS
(FAPF00C)

3M Filtrete FAPF00C-4 Air Filter replacement for the 3M Filtrete Ultra Quiet Air Purifier (FAP00-RS) which is made for small rooms. - P-3M-Filtrete-FAP00-RS-Air-Purifier-Kit.asp These 3M Filtrete air filter replacements use a co


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3M Filtrete FAPF00C Filters for FAP00-RS
Our Price: $24.54
Retail: $24.99
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French Scents Air Filter Freshener - Fresh Flowers
(86117)

The French Scents Air Filter Freshener (86117 Fresh Flowers scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area.


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French Scents Air Filter Freshener - Fresh Flowers
Our Price: $2.99
Retail: $3.99
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French Scents Air Filter Freshener Mountain Breeze
(42068)

The French Scents Air Filter Freshener (42068 Mountain Breeze scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area. This French Sc


Discontinued Product Read Description.
French Scents Air Filter Freshener Mountain Breeze
Our Price: $1.99
Retail: $3.99
You Save 50%!

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Filters Fast - Air Filters

" Thank you for your expert service when helping me get the proper filters for my old pool and filter system. The new ones are perfect and work very well. All the best! " - Jim, Alamo, CA
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