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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.


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Air Filters full product list:


FiltersFast MERV13 Replaces Honeywell 16x25x5FC100A1029
(FFC16255HONM13)

The FiltersFast MERV13 Replaces Honeywell 16x25x5 FC100A1029 is the compatible version of the genuine Honeywell FC100A Series Residential Air Cleaner Filter.


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FiltersFast MERV13 Replaces Honeywell 16x25x5FC100A1029
Our Price: $75.99
Retail: $90.00
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Whirlpool 8171434 Large Pre-Filter
(8171434)

Whirlpool Whispure 8171434 Pre-Filters fit Whirlpool Models AP350, AP450, and AP510. This Activated Carbon Pre-filter pre-cleans the air by helping reduce odors as it filters out larger particles, therefore extending the life of your HEPA filter.


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Whirlpool 8171434 Large Pre-Filter
Our Price: $47.99
Retail: $59.99
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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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Filter Monster 30985G Replacement For Hunter 30985
(30985)

The Hunter 30985 - Replacement Purifier Filter- 30480 is a replacement air filter for the Hunter 30408 and 30442 air purifiers. This replacement Hunter filter is an electric HEPA filter that traps up to 99.9% of airborne particles while also elimina


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Filter Monster 30985G Replacement For Hunter 30985
Our Price: $17.99
Retail: $24.99
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Honeywell 20X25 Air Filter Replacement - MERV 13
(FC200E1037)

The Honeywell 20X25 Air Filter Replacement is a MERV 13 rated high efficiency media air cleaner that can be used in all compatible size air ducts plus Honeywell cleaners that require a 20"W x 25"L x 4"D filter. It will also fit all Aprilaire, Space-


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Honeywell 20X25 Air Filter Replacement - MERV 13
Our Price: $48.99
Retail: $49.99
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TopTech DTT-FM-2025 20x25x4 MERV 11 Filter
(DTT-FM-2025)

The TopTech DTT-FM-2025 20x25x4 MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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TopTech DTT-FM-2025 20x25x4 MERV 11 Filter
Our Price: $35.99
Retail: $39.99
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Air Care 1051 Tabletop Air Purifier Filter
(1051SS)

The Essick Air 1051 is a two stage air cleaner filter for your Bemis air purifier. These air purifiers remove 97% of dust, allergens and bacteria from your homes air. The tabletop air cleaner filter will keep your air purifier working at its best by


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Air Care 1051 Tabletop Air Purifier Filter
As Low As: $14.99
Retail: $23.99
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Trane Perfect Fit BAYFTAH26M2A MERV 8 26x21x5
(BAYFTAH26M2A)

The Filtersfast Trane Perfect Fit BAYFTAH26M2A 26x21x5 is a furnace air filter that fits several high efficiency air cleaners from Trane. This Trane air filter boasts a MERV 8 rating for the reduction of particulates in your air, including dust


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Trane Perfect Fit BAYFTAH26M2A MERV 8 26x21x5
Our Price: $50.95
Retail: $54.95
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Lennox X0445 MERV 11 Pleated Furnace Filter Media
(X0445)

This Lennox X0445 MERV10 Pleated Furnace Filter Media is a part of the Lennox “Healthy Climate” line of indoor air quality products. This Lennox Healthy Climate Filter is an expandable media air filter.


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Lennox X0445 MERV 11 Pleated Furnace Filter Media
Our Price: $32.95
Retail: $35.95
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Lennox X0586 MERV 11 Pleated Media Filter
(X0586)

This Lennox X0586 MERV 10 Pleated Media Filter is a genuine MERV 10 filter offering efficient and effective filtration. This Lennox Pleated Furnace Filter only needs to be replaced every 6 months.


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Lennox X0586 MERV 11 Pleated Media Filter
As Low As: $29.95
Retail: $39.99
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Lennox X0583 MERV 11 Air Cleaner Media Filter
(X0583)

This Lennox X0583 MERV 11 Air Cleaner Media Filter needs to be replaced every 6 months. The Lennox Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store.


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Lennox X0583 MERV 11 Air Cleaner Media Filter
Our Price: $35.95
Retail: $104.00
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FiltersFast A10PR R Replacement for Trane BAYPAD01A1010A
(BAYPAD01A1010A 1 R)

The FiltersFast A10PR R is the correct replacement for the Trane BAYPAD01A1010A 1 R and for the following humidifier models:


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FiltersFast A10PR R Replacement for Trane BAYPAD01A1010A
As Low As: $6.99
Retail: $10.99
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FiltersFast FFC16253TABM8 Trion MERV 8 16x25x3 Filter 3-Pack
(FFC16253TABM8)

The FiltersFast FFC16253TABM8 Trion MERV 8 16x25x3 Filter compatible MERV 8 filter replacement. This Air Bear Cub Filter is also known as part number FFC16253TABM8.


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FiltersFast FFC16253TABM8 Trion MERV 8 16x25x3 Filter 3-Pack
Our Price: $49.99
Retail: $59.99
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FiltersFast Brand Aprilaire SpaceGard 2400 16x27x6 2-Pack
(FFC162766SG)

The FiltersFast Compatible 16x27x6 MERV 11 Air Filter can be used as an upgrade for the Aprilaire Space Gard 2400. Upgrade your Space Gard AC filter today to the pre-assembled, easy to install FiltersFast Space Gard Compatible 16x27x6!


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FiltersFast Brand Aprilaire SpaceGard 2400 16x27x6 2-Pack
Our Price: $60.90
Retail: $99.99
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Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5
(BAYFTAH21M2)

The Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5 fits the TFM215B0AH0 Perfect Fit High Efficiency Air Cleaner. This Trane Perfect Fit filter has a MERV 8 rating that helps purify your air and improve overall indoor air quality. Measuring appro


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Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5
As Low As: $43.95
Retail: $49.99
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FiltersFast Trane Perfect Fit BAYFTFR17M 17.5x27x5 2pk
(FFC175275TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These FiltersFast Air Filters specifically replace Trane part number BAYFTFR17M or FLR06069, which is a 17.5x27x5 Air Filter used in several Trane Air Cleaner.


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FiltersFast Trane Perfect Fit BAYFTFR17M 17.5x27x5 2pk
Our Price: $70.99
Retail: $99.99
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GeneralAire GA19 Humidifier Vapor Pad Replacement
(7919)

The GeneralAire GA19 Humidifier Vapor Pad Replacement is a replacement vapor pad for the GeneralAire Elite Models 900 and 1000. Air passes through the GA19 vapor pad where moisture is absorbed into the heating system after which the home is humidifi


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GeneralAire GA19 Humidifier Vapor Pad Replacement
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Retail: $17.84
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FiltersFast Replacement 2-pack For BestAir SGMPR-B, Aprilaire 201
(SGMPR-B)

The Space-Gard SGMPR-B Compatible MERV 11 Media Filter (2-Pack) come pre-assembled and replace AprilAire 201 air filters for use on Space-Gard Models 2200 & 2250 Air Cleaners.


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FiltersFast Replacement 2-pack For BestAir SGMPR-B, Aprilaire 201
Our Price: $39.98
Retail: $49.99
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Carrier EXPXXFIL0016 EZ-FLEX Air Purifier Filter
(EXPXXFIL0016)

The Carrier EXPXXFIL0016 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 will fit many compatible air purifiers includin


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Carrier EXPXXFIL0016 EZ-FLEX Air Purifier Filter
Our Price: $53.98
Retail: $69.99
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TopTech DTT-FM-1625 16x25x4 MERV 11 Filter
(DTT-FM-1625)

The TopTech DTT-FM-1625 16x25x4 MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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TopTech DTT-FM-1625 16x25x4 MERV 11 Filter
Our Price: $33.99
Retail: $45.99
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FiltersFast Trane Perfect Fit BAYFTFR21M 21x27x5 2pk
(FFC21275TRNM11)

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 2pk
Our Price: $90.95
Retail: $109.95
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Trane Perfect Fit BAYFTFR17P4A Filter-17.5x27x1
(BAYFTFR17P4A)

The Trane Perfect Fit BAYFTFR17P4A Filter - 17.5x27x1 fits several air cleaner models manufactured by Trane. This Trane Perfect Fit filter is 1 inch and pleated for maximum purification of your air. This Trane furnace filter measures approximately 1


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Trane Perfect Fit BAYFTFR17P4A Filter-17.5x27x1
Our Price: $18.52
Retail: $19.99
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BestAir CBW9 Replacement For Bionaire 900 2-Pack
(CBW9)

The 900 Humidifier Filters Two-Pack, is a humidifier wick filter that works in your Bionaire Humidifier. The humidifier filter wick works with your Bionaire humidifier to produce the best humidified air quality for your home. These Bionaire


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BestAir CBW9 Replacement For Bionaire 900 2-Pack
As Low As: $12.99
Retail: $14.99
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Lennox X6675 MERV 16 Furnace Filter Replacement
(X6675)

The Lennox X6675 is a MERV 16 filter for your home. This air filter media is also known as a healthy climate air filter and is designed to fit the Lennox HCC20-28 air cleaner model.

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Lennox X6675 MERV 16 Furnace Filter Replacement
Our Price: $130.95
Retail: $149.99
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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
As Low As: $22.49
Retail: $35.00
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