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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.


Air Filters full product list:


FiltersFast FFC21275TRNM13 Replacement for Trane BAYFTFR21M, 21x27x5 Perfect Fit - MERV13, 2-Pack
(FFC21275TRNM13)

FiltersFast Brand Trane 21x27x5 Perfect Fit BAYFTFR21M Merv 13 2 Pack 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.
FiltersFast FFC21275TRNM13 Replacement for Trane BAYFTFR21M, 21x27x5 Perfect Fit - MERV13, 2-Pack
Our Price: $89.95
Retail: $139.99
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Honeywell FC40R1060 16x25 Return Air Grille Filter
(FC40R1060)

Honeywell FC40R1060 16x25 Return Air Grille AC Filter is a high efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x25x4.


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Honeywell FC40R1060 16x25 Return Air Grille Filter
Our Price: $49.99
Retail: $59.99
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BestAir R14ALLM Replacement For Honeywell HRF-AP1 2-Pack
(HRF-AP1 1)

The Honeywell HRF-AP1 Carbon PreFilter 2-Pack is a replacement carbon pre-filter for all models of Honeywell Round Air, Honeywell Quietcare, and Honeywell Silent Comfort air purifiers. This two pack of carbon filters is cut-to-fit, reduces common


In stock! Ships in 1 business day.
BestAir R14ALLM Replacement For Honeywell HRF-AP1 2-Pack
Our Price: $19.95
Retail: $24.99
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FiltersFast 1" Air Filters MERV 11 Replacement for Nordic Pure MERV 10 6-Pack
(FFM11 6pk ND)

The FiltersFast FFM11 6-Pack is the compatible replacement for the Nordic Pure 1" MERV 10 Air Filters.


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FiltersFast 1" Air Filters MERV 11 Replacement for Nordic Pure MERV 10 6-Pack
Our Price: $69.95
Retail: $87.99
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BestAir R14ALLM Replacement For Kenmore 83157 2-Pack
(83157 1)

The Kenmore 83157 Carbon PreFilter 2-Pack is the correct replacement for: several Kenmore air cleaner models This carbon prefilter is a cut to fit sheet that measures 15 3/4" x 48". This Kenmore prefilter removes large particles and common hou


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BestAir R14ALLM Replacement For Kenmore 83157 2-Pack
Our Price: $19.95
Retail: $24.99
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FiltersFast FFC20265WR Replacement for White Rodgers F825-0549 20x26x5 2Pack
(F825-0549)

The FiltersFast 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 FFC20265WR Replacement for White Rodgers F825-0549 20x26x5 2Pack
Our Price: $59.95
Retail: $79.99
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GeneralAire 4401 13415 MERV 11 Filter Media for AC-4
(4401)

The GeneralAire 4401 air cleaner filter replacement is manufactured for your AC4 furnace air cleaner. This air cleaner filter cartridge features a MERV 11 rating that will capture particulates down to 3 microns in size.


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GeneralAire 4401 13415 MERV 11 Filter Media for AC-4
Our Price: $39.95
Retail: $44.99
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GE WB02X10700 Compatible Oven Range Hood Filter
(OEMRHP0808)

This is an Oven Hood Range Filter OEMRHP0808 made by American Metal Filter Company which is a compatible replacement range vent hood filter for the GE WB02X10700 range filter. This oven range hood filter is a combination filter composed of carbon


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GE WB02X10700 Compatible Oven Range Hood Filter
Our Price: $17.95
Retail: $24.99
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GeneralAire 4356 - GA100A37 20x25 MERV 10 Filter Media
(4356)

This GeneralAire 4356 - GA100A37 20x25 MERV 10 Filter Media consists of electrostatically charged synthetic material that dramatically reduces airborne particulates to provide healthier indoor air.


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GeneralAire 4356 - GA100A37 20x25 MERV 10 Filter Media
Our Price: $34.95
Retail: $39.99
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GeneralAire F1021, 4572 MERV 13 16x25x4 Media Filter
(4572)

The General Aire F1021 MERV 13 16x25x4 Media Filter is the correct replacement filter for the GeneralAir TERSus1200, and removes airborne particles and allergens as small as 0.3 micron to improve indoor the air quality of your home dramatically.


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GeneralAire F1021, 4572 MERV 13 16x25x4 Media Filter
Our Price: $69.95
Retail: $79.99
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FiltersFast FFC24265TRNM8 Replacement for Trane Perfect Fit BAYFTFR24M 2-Pack
(FFC24265TRNM8)

FiltersFast Brand Trane 24.5x27x5 Perfect Fit BAYFTFR24M air filter replacements are specifically designed to replace OEM Trane Perfect Fit BAYFTFR24M air filters.


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FiltersFast FFC24265TRNM8 Replacement for Trane Perfect Fit BAYFTFR24M 2-Pack
Our Price: $51.95
Retail: $69.99
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FiltersFast FFC20205HONM8 Replacement for Honeywell FC100A1011 - 20x20x5 2-Pack
(FFC20205HONM8)

FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack Air Filter is an economical compatible version of the OEM Honeywell FC100A1011 20"x20" Media AC Filter. To save money, this air filter replacement comes in a 2pk value set.


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FiltersFast FFC20205HONM8 Replacement for Honeywell FC100A1011 - 20x20x5 2-Pack
Our Price: $39.95
Retail: $52.99
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IcePure AF005 Replacement for GE Cafe Series ODORFILTER
(AF005)

The IcePure AF005 Replacement for the GE Cafe Series ODORFILTER Odor Filter uses a powerful charcoal filter to help reduce odor inside your refrigerator.


In stock! Ships in 1 business day.
IcePure AF005 Replacement for GE Cafe Series ODORFILTER
Our Price: $4.95
Retail: $23.99
You Save 79%!

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FiltersFast A12WPR Replacement for Aprilaire 12 Humidifier Panel
(A12WPR)

The FiltersFast A12WPR Replacement for Aprilaire 12 Humidifier Water Panel is a replacement water pad for your Aprilaire humidifier. This water pad helps to bring humidified air into your home.


Out of stock
FiltersFast A12WPR Replacement for Aprilaire 12 Humidifier Panel
As Low As: $12.95
Retail: $19.99
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FiltersFast FFC245275TRN Replacement for Trane BAYFTFR24M2, 24.5x27x5 - 2-Pack
(FFC245275TRN)

The FiltersFast Brand Trane 24.5x27x5 BAYFTFR24M2 MERV 13 Upgrade 2 Pack compatible air filter captures airborne pollutants that can cause a negative impact on respiratory health


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FiltersFast FFC245275TRN Replacement for Trane BAYFTFR24M2, 24.5x27x5 - 2-Pack
Our Price: $79.95
Retail: $89.99
You Save 11%!

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Honeywell FC40R1144 Return Air Filter - 20x24
(FC40R1144)

The Honeywell FC40R1144 Return Air Filter - 20x24 is a replacement air filter that mounts in most return filter grilles. The Honeywell return air grille filter features four inches of depth, which provides a higher efficiency than standard one inch


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Honeywell FC40R1144 Return Air Filter - 20x24
Our Price: $54.95
Retail: $69.99
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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 - 2-Pack 2-Pack
(BAYFTFR24M2A)

The Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 fits the TFM245B0FR0 Perfect Fit High Efficiency Air Cleaner and easily slides in for quick use. This Trane Perfect Fit filter measures approximately 24.5" x 27" x 5" and has a MERV 8 rating.


Special Order. Ships in 33 days.
Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 - 2-Pack
Our Price: $121.90

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GeneralAire 6FM2020 MERV 11 Replacement For GeneralAire 5FM2020
(4531)

The General Aire 5FM2020 MERV11 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 6FM2020 MERV 11 Replacement For GeneralAire 5FM2020
Our Price: $36.95
Retail: $49.99
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BestAir A35PR Replacement for SPACE-GARD 35
(SPACE-GARD 35 1R)

This BestAir A35PR humidifier water panel has approximate dimensions of 10" x 13 1/4" x 1 1/2". This metal water panel features honeycomb filtration that traps mineral pollutants.


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BestAir A35PR Replacement for SPACE-GARD 35
As Low As: $9.95
Retail: $14.99
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Lennox Y6616 PCO3-14-16 PureAir Annual Maintenance Kit 612988-03
(Y6616)

Lennox Y6616 PCO3-14-16 PureAir Annual Maintenance Kit 612988-03 has everything you need for your annual service.

Free shipping within the continental United States!

In Stock! Ships in 1 to 2 business days.
Lennox Y6616 PCO3-14-16 PureAir Annual Maintenance Kit 612988-03
Our Price: $169.95
Retail: $195.99
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BestAir D18-C Replacement for Honeywell HAC-500 Humidifier Filter
(HAC-500)

The BestAir D18-C Replacement for Honeywell HAC-500 Humidifier Filter Pad features honeycomb filtration to trap mineral pollutants found in water and help prevent them from entering your home.


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BestAir D18-C Replacement for Honeywell HAC-500 Humidifier Filter
As Low As: $7.95
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FiltersFast 1" Air Filters MERV 8 Replacement for Aerostar Air Filters 6-Pack
(FFM8 6pk AS)

The FiltersFast 1" Air Filters MERV 8 With Pleats 6-Pack is the compatible replacement for the Aerostar Air Filters MERV 8 1" Air Filter.


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FiltersFast 1" Air Filters MERV 8 Replacement for Aerostar Air Filters 6-Pack
Our Price: $55.95
Retail: $59.99
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Electrolux EAF1CB Replacement for Frigidaire 241504902
(241504902)

The Frigidaire 241504902 is a refrigerator air filtration cartridge that is the replacement for Frigidaire EAF1CB. The Frigidaire 241504902 Refrigerator Air Filter fits Frigidaire and Electrolux Pure Advantage


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Electrolux EAF1CB Replacement for Frigidaire 241504902
Our Price: $15.95
Retail: $19.99
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Lennox X4137 HEPA-20 92017-11 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.


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Lennox X4137 HEPA-20 92017-11 Carbon PreFilter Replacement
Our Price: $39.95
Retail: $46.99
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Lennox X6669 PCO-20C 21X26X4 Merv 16 Filter Replacement
(X6669)

The Lennox X6669 PCO-20C 21X26X4 Merv 16 Filter Replacement is a pleated box filter for your Pureair air cleaner. This air filter box measures 21x26x4 inches and is a pleated air filter.

Free shipping within the continental United States!

In Stock! Ships in 2 to 3 business days.
Lennox X6669 PCO-20C 21X26X4 Merv 16 Filter Replacement
Our Price: $129.95
Retail: $149.99
You Save 13%!

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Filters Fast - Air Filters

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