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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 FF 30900 Replacement For Hunter 30900
(FF 30900)

The FF 30900 Filter Replacement is a compatible version of the Hunter 30900 HEPAtech Purifier Filter.


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FiltersFast FF 30900 Replacement For Hunter 30900
Our Price: $17.99
Retail: $24.99
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Lennox X0581 MERV 11 Pleated Furnace Filter Media
(X0581)

This Lennox X0581 MERV 10 Pleated Furnace Filter Media provides high efficiency filtration. This Merv 10 furnace filter requires no assembly or combs.


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Lennox X0581 MERV 11 Pleated Furnace Filter Media
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Retail: $29.99
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Trane Perfect Fit BAYFTAH26M2 FLR06074 MERV 8 26x21x5
(BAYFTAH26M2)

The Trane / American Standard Perfect Fit BAYFTAH26M2 FLR06074 26x21x5 is a furnace air filter that fits several high efficiency air cleaners from Trane and American Standard.


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Trane Perfect Fit BAYFTAH26M2 FLR06074 MERV 8 26x21x5
As Low As: $46.95
Retail: $54.95
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Trion Air Bear Home Air Filter 16x25x3, 255649-101
(255649-101)

The Trion Air Bear Media AC Filter 16x25x3 part number 255649-101 is a genuine Trion Air Bear pleated media filter. The 255649101 can be used in Trion models Air Bear TM and Air Bear Cub. Replaces 229990-101 and 229990-001.


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Trion Air Bear Home Air Filter 16x25x3, 255649-101
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Retail: $35.00
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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
(4511)

The GeneralAire 5FM1625 MERV 10 Filter Media Cartridge is the correct replacement filter for the following models of air cleaners: GeneralAire MAC1400 GeneralAire MAC1400M Trion AirBear Supreme 1400 This GeneralAire replacment filter measu

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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
Our Price: $23.99
Retail: $34.99
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FiltersFast Trane Perfect Fit BAYFTFR21M 21x27x5 (2 Pack)
(FF-BAYFTFR21M)

These MERV 11 FiltersFast Brand compatible Furnace Filters are replacement filters for Trane Perfect Fit Air Filters. These FiltersFast Air Filters replace Trane part number BAYFTFR21M or FLR06070 , which is used in several Trane Air Cleaner models

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FiltersFast Trane Perfect Fit BAYFTFR21M 21x27x5 (2 Pack)
Our Price: $90.95
Retail: $109.95
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Honeywell FC40R1003 Return Grille Filter
(FC40R1003)

The Honeywell FC40R1003 a high-efficiency, replacement filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 20x20x4. Genuine Honeywell Part.


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Honeywell FC40R1003 Return Grille Filter
As Low As: $44.95
Retail: $73.34
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Lennox X2660 Humidifier Water Panel Filter
(X2660)

The Lennox X2660 Humidifier Water Panel Filter is a replacement water panel filter for several Lennox Healthy Climate model humidifiers. This evaporator pad is also compatible with several humidifier models from Aprilaire. This humidifier filter rep


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Lennox X2660 Humidifier Water Panel Filter
Our Price: $14.99
Retail: $61.45
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Carrier EXPXXFIL0024 EZ-FLEX Air Purifier Filter
(EXPXXFIL0024)

The Carrier EXPXXFIL0024 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.


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Carrier EXPXXFIL0024 EZ-FLEX Air Purifier Filter
Our Price: $42.95
Retail: $99.99
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FiltersFast A10PR R Replacement for BAYPAD01A1010A
(BAYPAD01A1010A R)

The American Standard BAYPAD01A1010A is the compatible replacement for the following humidifier: American Standard HUMD200A Humidifier American Standard HUMD200T Humidifier


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FiltersFast A10PR R Replacement for BAYPAD01A1010A
As Low As: $6.99
Retail: $10.99
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FiltersFast Trane BAYFTFR17M2 Air Filter 17.5x27x5
(BAYFTFR17M2)

The FiltersFast Trane BAYFTFR17M2 has nominal dimensions of 17 1/2 inches x 27 inches x 5 inches.


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FiltersFast Trane BAYFTFR17M2 Air Filter 17.5x27x5
Our Price: $46.99
Retail: $49.99
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GeneralAire 12758 MERV 11 Filter Media Replacement
(4001)

The GeneralAire 12758 MERV 11 Filter Media Replacement is a replacement air filter for the GeneralAire AC1 and AC22 model air cleaners. This replacement filter media features a MERV 11 rating and Micro Fiber construction for the reduction of airborn


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GeneralAire 12758 MERV 11 Filter Media Replacement
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Retail: $63.99
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Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter-21x27x5
(BAYFTFR21M2)

The Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter Kit- 21x27x5 features a MERV 8 rating for the reduction of dust, dirt, and various allergens in your air, and the improvement of indoor air quality.


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Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter-21x27x5
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Retail: $59.99
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FilterFast Brand Honeywell 20x25x5 FC100A1037 2-Pack
(FFC20255HONM8)

The FilterFast Brand Honeywell 20x25x5 FC100A1037 2-Pack is the compatible version of the OEM Honeywell 20x25x5 Air Filter FC100A1037.


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FilterFast Brand Honeywell 20x25x5 FC100A1037 2-Pack
Our Price: $40.99
Retail: $60.00
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Honeywell HRF-AP1 Replacement For Honeywell 38002
(38002)

The Honeywell Universal Replacement Pre-Filter 38002 can be used in place of pre-filters 32002, 33002, 34002, and 35002. This pre-filter fits all Round Honeywell HEPA Air Cleaner Models. Genuine Honeywell part.


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Honeywell HRF-AP1 Replacement For Honeywell 38002
Our Price: $14.95
Retail: $15.95
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FiltersFast ROHAPF60M Replacement For Holmes HAPF60 Pre-Filter 2-Pack 2-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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FiltersFast ROHAPF60M Replacement For Holmes HAPF60 Pre-Filter 2-Pack
Our Price: $19.90

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FiltersFast Replacement For Kenmore 14909 Humidifier Filters 2-Pack
(E2R R)

This is the FiltersFast compatible replacement for the Kenmore 14909 Humidifier Filter.


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FiltersFast Replacement For Kenmore 14909 Humidifier Filters 2-Pack
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Retail: $22.99
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GeneralAire GA10 Humidifier Vapor Pad
(7900)

The GeneralAire GA10 Humidifier Vapor Pad is a replacement vapor pad for the GeneralAire 570 Elite Flow Through Humidifer, as well as several humidifier models from Honeywell, AprilAire, and Source1. The hot air from the humidifier's furnace is firs


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GeneralAire GA10 Humidifier Vapor Pad
Our Price: $13.95
Retail: $19.99
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FiltersFast Brand Trane PerfectFit BAYFTFR24M 24.5x27x5 2-Pack
(FFC24265TRN)

These FiltersFast Brand Trane Perfect Fit BAYFTFR24M 24.5x27x5 MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These FiltersFast Air Filters specifically replace Trane part number BAYFTFR24M, which is a 24.5x27x5


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FiltersFast Brand Trane PerfectFit BAYFTFR24M 24.5x27x5 2-Pack
Our Price: $70.95
Retail: $111.00
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Lennox X8310 MERV 11 Expandable Filter Replacement
(X8310)

The Lennox x8310 expandable MERV 11 filter is for use in your homes filter system. Also known as the healthy climate furnace filter, the X8310 measures 20x25x5 inches. This furnace filter media will protect your home from particles such as du


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Lennox X8310 MERV 11 Expandable Filter Replacement
Our Price: $31.95
Retail: $39.50
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Aprilaire 1213 Upgrade Kit - Aprilaire 2200 & 2120
(Aprilaire 1213)

The Aprilaire 1213 is an Aprilaire Upgrade Kit that allows owners of Aprilaire 2200 and Aprilaire 2120 air cleaners to use the MERV 13 Aprilaire 213 Filter instead of their MERV 10 Aprilaire 201 Filter.


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Aprilaire 1213 Upgrade Kit - Aprilaire 2200 & 2120
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FiltersFast 4-inch MERV 8 Air Filters 3-Pack
(FFM8PLEAT 4)

The FiltersFast 4-inch MERV 8 4"Air Filters 3-pack is compatible with: Aprilaire Space-Gard Trion Air Bear Honeywell and other top name brand air conditioning filters. Usable in residential, commercial, and industrial applications, the


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FiltersFast 4-inch MERV 8 Air Filters 3-Pack
Our Price: $43.95

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GeneralAire 6FM2025 MERV 11 Replacement For GeneralAire 5FM2025
(4501)

The General Aire 5FM2025 MERV 10 Filter Media Cartridge measures 20"x25"x5", and is the correct replacement part for General Air MAC 2000 and MACL Air Cleaner Systems; and TRION AirBear Supreme 2000 Air Cleaner Systems.


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GeneralAire 6FM2025 MERV 11 Replacement For GeneralAire 5FM2025
As Low As: $19.95
Retail: $40.95
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GeneralAire 4556 6FM2020 MERV11 Air Filter 20x20x5
(4556)

This is the GeneralAire 4556 6FM2020 MERV 11 Air Filter 20x20x5.


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GeneralAire 4556 6FM2020 MERV11 Air Filter 20x20x5
As Low As: $19.95
Retail: $49.99
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Holmes HWF65 Replacement Humidifier Filter
(HWF65)

Holmes HWF65 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HM1800, HM1840, HM1845, HM1850, HM1851, HM1855, HM1865, HM1888, HM1889, HM1895, HM2059, HM2060, HM2060W, HM3000, HM3800, HM3850, and more..


This item has been discontinued. Please review the product description for more information.
Holmes HWF65 Replacement Humidifier Filter
Our Price: $16.99
Retail: $20.00
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