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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


Frigidaire 241575002 Replacement Air Filter
(241575002)

The Frigidaire 241575002 Replacement Air Filter fits Icon and Pure Advantage refrigerator models manufactured by Electrolux and Frigidaire. This refrigerator air filter, also known as the Frigidaire EAF1CB, uses a combination of activated carbon, ze


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Frigidaire 241575002 Replacement Air Filter
Our Price: $11.99
Retail: $14.99
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Trion Air Bear Supreme Filter 20x20x5 MERV11
(259112-103)

The Trion Air Bear Supreme Filter 20x20x5 MERV11 is an Air Bear filter with a MERV 11 rating and built-in frame strength. This genuine Air Bear filter boasts pre-applied gasketing on the pre-assembled filter in order to prevent air bypass. The MERV


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Trion Air Bear Supreme Filter 20x20x5 MERV11
Our Price: $46.99
Retail: $49.99
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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.


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GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
Our Price: $20.99
Retail: $29.99
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FiltersFast Brand White Rodgers 16x26x5 F825-0548 2Pack
(FFC16265WRMM13)

The FiltersFast Brand White Rodgers 16x26x5 F825-0548 2Pack is a compatible economical alternative to the genuine 16x26x5 air furnace filter.


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FiltersFast Brand White Rodgers 16x26x5 F825-0548 2Pack
Our Price: $70.00
Retail: $90.00
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GeneralAire F1018 MERV 11 16x25x4 Media Filter
(4571)

The General Aire F1018 MERV 11 16x25x4 Media Filter is the correct filter replacement for the General Air TERSus 1200, and removes airborne allergens and particles down to 0.3 microns to improve indoor air quality of your home dramatically.


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GeneralAire F1018 MERV 11 16x25x4 Media Filter
Our Price: $50.99
Retail: $59.99
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Lennox 75X66 Metal Mesh Filter
(75X66)

The Lennox 75X66 Metal Mesh Filter is the correct replacement for the following air cleaner: Lennox Pureair PCO-2OC The Lennox Pureair air cleaner is the only air cleaner made that destroys odors and VOC's, and has a MERV rating of MERV 16.

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Lennox 75X66 Metal Mesh Filter
Our Price: $153.00
Retail: $199.99
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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: $36.99
Retail: $39.99
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Honeywell FC40R1094 12x12x3 Return Grille Filter
(FC40R1094)

The Honeywell FC40R1094 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x12x4. Genuine Honeywell Part.


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Honeywell FC40R1094 12x12x3 Return Grille Filter
As Low As: $38.50
Retail: $50.00
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Universal Carbon Range Hood Filter - Trim to Fit
(RYM1518C)

This Universal Carbon Oven Range Hood Filter (RYM1518C) is a trim to fit oven range oven carbon filter for use with many over the range oven hoods (ducted and non-ducted), microwave ovens, and other similar applications requiring odor elimination. I


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Universal Carbon Range Hood Filter - Trim to Fit
Our Price: $14.99
Retail: $19.99
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Awair Glow Plug-In Air Quality Sensor
(AWAIR GLOW)

Take control of the air you breath inside your home with the Bitfinder Awair Glow Plug-In Air Quality Sensor.


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Awair Glow Plug-In Air Quality Sensor
Our Price: $114.00
Retail: $155.00
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Honeywell 209894 Replacement 16x20 Air Filter
(209894 R)

The Honeywell 209894 Replacement 16x20 Air Filter is a replacement furnace air filter for use with Honeywell 16 x 20 Air Cleaners, including the Honeywell F100F1004, F100B1008, F150E1000, F100F2028, and other models. This Honeywell furnace filter, a


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Honeywell 209894 Replacement 16x20 Air Filter
As Low As: $29.99
Retail: $49.99
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American Metal OEMRCP0205 Replacement For GE WB02X10943
(OEMRCP0205)

This Microwave Filter Replacement (OEMRCP0205) made by American Metal Filter Company is a compatible replacement microwave filter primarily for the GE WB02X10943 filter. It is a recirculating charcoal carbon microwave filter for use with non-ducted


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American Metal OEMRCP0205 Replacement For GE WB02X10943
Our Price: $3.99
Retail: $4.99
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Honeywell Replacement HEPA Filter, 23500
(23500)

The Honeywell 23500 Replacement HEPA Filter fits Honeywell Enviracaire Air Purifiers models 13530, 13531, 13532, 13533 (300i), 50200, 50201, and 52000 and Sears Kenmore models 83165 and 83331. Genuine Honeywell part.


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Honeywell Replacement HEPA Filter, 23500
Our Price: $48.32
Retail: $64.99
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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk 2-Pack
(AB-51625-8)

The Trion AB-51625-8 replaces the following Trion Air Bear air filters: Air Bear 1400 - 255649-103 Air Bear 1400 - 229990-103 Air Bear 2000 - 255649-102


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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk
Our Price: $61.90

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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


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Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
Our Price: $20.90

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Lennox X6669 MERV 16 Pleated Filter Media
(X6669)

The Lennox X6669 is a pleated box filter for your Pureair air cleaner. This air filter box measures 21x26x4 inches and is a pleated air filter. The Lennox x6669 furnace filter box can also be used to upgrade your older Pureair unit to a MERV 16.

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Lennox X6669 MERV 16 Pleated Filter Media
Our Price: $118.83
Retail: $149.99
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GeneralAire 4556 MERV 11 Replacement For GeneralAire 4531
(4531)

The General Aire 5FM2020 MERV10 Media Cartridge measures 20"x20"x5", and is used on GeneralAire MAC 2020 Series and TRION AirBear Supreme 20x20 Systems. This General Aire filter will reduce airborne particulates to provide healthier indoor air.


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GeneralAire 4556 MERV 11 Replacement For GeneralAire 4531
Our Price: $34.99
Retail: $49.99
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Holmes HAPF220 Purifier Carbon PreFilter
(ROHAPF220CSM)

The Holmes HAPF220 Purifier Carbon PreFilter-2 Pack fits the following models of Holmes air purifiers: HAP222 HAP223 HAP2234 HAP412 HAP412G HAP422B HAP422G This air purifier pre filter reduces odors such as pet odors, musty odors, cookin


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Holmes HAPF220 Purifier Carbon PreFilter
Our Price: $5.49
Retail: $7.49
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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter 6-Pack
(92X09)

This Lennox Healthy Climate Filter offers efficient air-filtration performance. This Lennox HEPA 60 carbon filter should be replaced every 2-5 years.


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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter
Our Price: $220.20

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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack 4-Pack
(98N42)

The Lennox 98N42 is a MERV 8 furnace filter 4-pack for your home. This furnace filter will protect your home from unhealthy contaminants and help keep your heating and cooling bill low.


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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack
Our Price: $33.95

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GeneralAire G99 Ventilator Filter Gage
(4002)

The GeneralAire G99 is the correct replacement for the following Ventilators: GeneralAire Whole House Ventilato


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GeneralAire G99 Ventilator Filter Gage
Our Price: $13.62
Retail: $49.99
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Free Flow Room Air Conditioner Filter - 15" x 24"
(93524)

This Free Flow Room Air Conditioner Filter (1777) is a universal 15" x 24" cut to fit black foam room air conditioner filter. It filters dirt, dust, soot, pollen, and other allergens.


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Free Flow Room Air Conditioner Filter - 15" x 24"
Our Price: $9.99
Retail: $15.99
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FiltersFast Brand F825-0549 White Rodgers 20x26x5 2Pack
(FFC20265WR)

The Filters Fast Compatible 20x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0549. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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FiltersFast Brand F825-0549 White Rodgers 20x26x5 2Pack
Our Price: $72.99
Retail: $79.99
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Lennox X8349 MERV 10 Filter Maintenance Kit
(X8349)

The Lennox X8349 MERV 10 Filter Maintenance Kit is a filter maintenance kit for the Lennox PCO-12C PureAir Air Purification System. This maintenance kit includes one MERV 10 filter (X6664), one catalyst insert (75X73), and four UV bulbs (X8149). The

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Special Order. Ships in 9 days.
Lennox X8349 MERV 10 Filter Maintenance Kit
Our Price: $195.00
Retail: $225.25
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Totaline DTLP102-1625 16x25 MERV 11 Filter
(DTLP102-1625)

The Totaline DTLP102-1625 16x25 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


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Totaline DTLP102-1625 16x25 MERV 11 Filter
Our Price: $36.44
Retail: $44.99
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