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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:


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: $30.99
Retail: $49.99
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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.

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Lennox X6669 PCO-20C 21X26X4 Merv 16 Filter Replacement
Our Price: $112.95
Retail: $149.99
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GeneralAire F1021 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 MERV 13 16x25x4 Media Filter
Our Price: $53.74
Retail: $59.99
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Electrolux EAF1CB PureAdvantage Air Filter
(EAF1CB)

The Electrolux Pure Advantage Refrigerator Air Filter Cartridge fits Icon refrigetator models manufactured by Electrolux and Frigidaire. Reduces odors from foods such as onions, garlic, fish, stale milk, and over-ripe fruits.


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Electrolux EAF1CB PureAdvantage Air Filter
Our Price: $12.99
Retail: $14.99
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FiltersFast FF 30915 Replacement for Hunter 30915
(30915)

The Hunter 30915 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns.


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FiltersFast FF 30915 Replacement for Hunter 30915
Our Price: $12.99
Retail: $16.99
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Trion Air Bear 255649-101 Replacement For Trion Air Bear AB316258
(AB316258)

The 6-Pack Trion Air Bear Cub Filter is a replacement Trion filter that works in all of your Trion Air Bear cleaners requiring a 16x25x3 size filter. Recommended by the Green Building Council, the Trion Air Bear filters replacement is a HEPA 8 filte


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Trion Air Bear 255649-101 Replacement For Trion Air Bear AB316258
As Low As: $22.49
Retail: $35.00
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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: $43.95
Retail: $49.99
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Trion Air Bear Cub Filter 16x25x3 MERV 11
(259112-101)

The 259112-101 is the correct filter replacement for all air cleaning sytems requiring a 16" x 25" x 3" air filter. The Trion Air Bear Cub Filter is a genuine Air Bear filter.


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Trion Air Bear Cub Filter 16x25x3 MERV 11
Our Price: $26.99

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FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M
(FFC21235TRNM13)

The FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M is a compatible version of the genuine Trane Perfect fit 21x23x5 Air Filter.

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FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M
Our Price: $90.95
Retail: $140.00
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Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit
(X8345)

The Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit, part number x8345 is meant for your Lennox PureAir PCO-20C air filtration unit. This MERV 16 filter measures 21" x 26" x 4" inches.

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Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit
Our Price: $279.95
Retail: $343.15
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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: $21.99
Retail: $29.99
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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: $35.95
Retail: $49.99
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FiltersFast 1" MERV 11 Replacement For Honeywell 14x14x1 MERV 11 6-Pack
(50049536-003)

The Honeywell 14x14x1 MERV 11 Air Filter- TruDRY DR90 is a replacement filter for the Honeywell TrueDry DR90 Dehumidification System. This Honeywell air filter measures 14" x 14" x 1" and has a MERV 11 rating for the reduction of airborne contaminan


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FiltersFast 1" MERV 11 Replacement For Honeywell 14x14x1 MERV 11 6-Pack
Our Price: $53.50

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Aprilaire 4510 Replacement Air Filter-1700, 1710A
(4510)

The Aprilaire 4510 is the correct replacement for the following dehumidifier: Aprilaire 1700 Dehumidifier


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Aprilaire 4510 Replacement Air Filter-1700, 1710A
Our Price: $32.95
Retail: $39.99
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Honeywell FC40R1136 18x24 Return Grille Air Filter 5-Pack
(FC40R1136)

The Honeywell FC40R1136 is the correct replacement for the following air return grille filters: Most air return filter grilles The Honeywell FC40R1136 18x24 Return Grille Air Filter measures 18 inches by 24 inches. This Honeywell FC40R1136 is


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Honeywell FC40R1136 18x24 Return Grille Air Filter
Our Price: $165.90

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GeneralAire 401-13156 MERV 11 Filter Media
(4051)

The GeneralAire Merv 11 ventilator filter replacement is designed for use in GeneralAire Air Cleaners. This part is often called a GeneralAire 401-13156. A suitable AC24 filter replacement, this Merv 11 replacement filter is expandable.


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GeneralAire 401-13156 MERV 11 Filter Media
Our Price: $52.85
Retail: $69.99
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FiltersFast FFC16205HONM13 Replacement for Honeywell FC100A1003
(FFC16205HONM13)

The FiltersFast FFC16205HONM13 compatible air filter replaces the Honeywell FC100A1003 and effectively reduces indoor air contaminants using a deep pleated filter media.


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FiltersFast FFC16205HONM13 Replacement for Honeywell FC100A1003
Our Price: $57.95
Retail: $64.95
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GeneralAire 4365 Comp For General Aire 16x20 MERV10 Filter
(4350)

The GeneralAire GA100A03 16x20 MERV10 Filter Media is used on Honeywell F25 Series, F35 Series, F100 Series & F150 Series Media Style Air Cleaners, as well as Honeywell FC100A1003, F100F1004, F100B1008, F100F2028, and F150E1000 Air Cleaners.


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GeneralAire 4365 Comp For General Aire 16x20 MERV10 Filter
Our Price: $34.99

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Totaline P102-1625 16x25 MERV 11 Filter
(P102-1625)

The Totaline P102-1625 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 P102-1625 16x25 MERV 11 Filter
Our Price: $33.95
Retail: $44.99
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Aprilaire 4270 Pleat Spacers for 2400/5000 6-Pack
(Aprilaire 4270)

The Aprilaire 4270 Pleat Spacers for 2400/5000 fit the Aprilaire 2400 and Aprilaire 5000 air cleaner models. This pleat spacer is shaped like a comb and supports filter media for even support of particulates throughout the filter. With these genuine


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Aprilaire 4270 Pleat Spacers for 2400/5000
Our Price: $85.98

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Electrolux 241754001 Replacement Air Filter
(241754001)

The Electrolux 241754001 Replacement Air Filter is a replacement filter for Electrolux and Frigidaire PureAdvantage refrigerator models. The Frigidaire air filter, also known as the Frigidaire EAFCBF, reduces common odors from your refrigerator and


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Electrolux 241754001 Replacement Air Filter
As Low As: $11.95
Retail: $19.99
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Filtrete Deep 1500-2 Replacement 4" Air Filter 2-Pack
(Deep 1500-2)

The Filtrete Deep 1500-2 Replacement 4" Air Filter comes with greater depth for improved airflow and more effective containment reduction.


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Filtrete Deep 1500-2 Replacement 4" Air Filter
Our Price: $93.94

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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.

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Lennox Y6616 PCO3-14-16 PureAir Annual Maintenance Kit 612988-03
Our Price: $165.95
Retail: $178.54
You Save 7%!

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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: $21.90

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Carrier FILCCCAR0020 Air Purifier Filter 2-Pack
(FILCCCAR0020)

The Carrier FILCCCAR0020 Air Purifier Filter is a genuine OEM factory replacement air filter for Bryant, Carrier, Payne, Day-Night, as well as certain Honeywell, Space-Gard, and Trion air purifiers. It fits numerous units including model numbers FIL


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Carrier FILCCCAR0020 Air Purifier Filter 2-Pack
Our Price: $57.95
Retail: $79.99
You Save 28%!

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