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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 product list


Honeywell FC40R1029 20x30x3 Return Grille Filter
(FC40R1029)

The Honeywell FC40R1029 is a high-efficiency, replacement filter for return grille applications that will capture airborne particles as small as 0.3 microns in size.


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Honeywell FC40R1029 20x30x3 Return Grille Filter
Our Price: $45.00
Retail: $74.81
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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
(FFC16255HONM13)

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


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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
Our Price: $74.99
Retail: $90.00
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Skuttle Air Cleaner Filter Replacement for DB2520
(448-002)

The Skuttle Air Cleaner Filter Replacement for DB2520 is a replacement air filter for the Skuttle DB-25-20 Air Cleaner. The deep-pleated, MERV 8 filter media of this replacement filter provides high-volume service that traps airborne particles to pr


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Skuttle Air Cleaner Filter Replacement for DB2520
Our Price: $29.95
Retail: $39.95
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FF 30900 Filter Replacement
(FF 30900)

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


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FF 30900 Filter Replacement
Our Price: $15.99
Retail: $24.99
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Lennox X0445 MERV 10 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 10 Pleated Furnace Filter Media
Our Price: $29.90
Retail: $34.10
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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
(50000293-004)

The Honeywell 50000293-004 Post Filter 12.5x20 2-Pack is a replacement post filter for the 20x25 and 20x12.5 F300E and F50F air cleaners. The Honeywell post filter increases the efficiency of your Honeywell electronic air purifier model and has only


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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
Our Price: $40.09
Retail: $44.99
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Carrier GAPCCCAR2020 Air Purifier Filter
(GAPCCCAR2020)

The Carrier GAPCCCAR2020 Air Purifier Filter is a genuine OEM factory replacement air filter for the Carrier Infinity Air Purifier, Bryant Perfect Air Purifier, as well as other compatible air purifiers made by BDP, Payne, Day and Night Infinity, an


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Carrier GAPCCCAR2020 Air Purifier Filter
Our Price: $90.09
Retail: $94.59
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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
(FFC162766SG)

The Filters Fast 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 Filters Fast Space Gard Compatible 16x27x6!


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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
Our Price: $45.00
Retail: $59.99
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Honeywell FC100A1037 Compatible MERV 13 2-PACK
(FFC20255HONM13)

The Honeywell 20x25x5 Filter FC100A1037 is a compatible media air filter with a MERV 13 energy efficiency rating. This replacement filter is also known as part number FFC20255HONM13.


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Honeywell FC100A1037 Compatible MERV 13 2-PACK
Our Price: $82.99
Retail: $90.00
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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
Our Price: $42.93
Retail: $49.99
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Whirlpool 1183054 HEPA Filter
(1183054)

The Whirlpool 1183054 replacement HEPA filter filter removes airborne contaminants known known to cause or worsen respiratory problems. The synthetic-based filter membrane captures microscopic air particles such as dust, pollen, and smoke.


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Whirlpool 1183054 HEPA Filter
Our Price: $89.99
Retail: $149.99
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Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5
(BAYFTFR17M2)

The Trane BAYFTFR17M2 is a Trane Perfect Fit filter for use in the following enclosures: Trane Perfect Fit Trane Air-Tite American Standard Perfect Fit American Standard Air-Tite The Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5 has no


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Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5
Our Price: $42.99
Retail: $49.99
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Hunter 30973 - Germicidal Replacement Air Filter
(30973)

The Hunter 30973 - Germicidal Replacement Air Filter is a replacement HEPA air filter for the Hunter Model 30890, 30891, 30892, 30895, and 30405 Air Purifiers. This Hunter air filter replacement features HEPA-type media with electricity applied thro


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Hunter 30973 - Germicidal Replacement Air Filter
Our Price: $39.99
Retail: $49.99
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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: $11.99
Retail: $14.99
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Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
(FFC21275TRNM8)

The Trane 21x27x5 Perfect Fit BAYFTFR21M Filter is an economical compatible alternative to the genuine OEM Trane 21x27x5 Perfect Fit BAYFTFR21M Filter.


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Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
Our Price: $65.00
Retail: $70.00
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Trion 16x25x3 Air Bear Cub Filter - MERV 8 3pk
(FFC16253TABM8)

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


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Trion 16x25x3 Air Bear Cub Filter - MERV 8 3pk
Our Price: $39.99
Retail: $59.99
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Lennox H/C X6664 MERV 10 Air Filter Replacement
(X6664)

The Lennox H/C X6664 MERV 10 Air Filter Replacement is a replacement air filter for the Lennox PCO-12C PureAir air cleaner. This pleated air filter features a MERV 10 rating and can trap airborne particulates down to as small as 0.3 microns.


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Lennox H/C X6664 MERV 10 Air Filter Replacement
Our Price: $25.99
Retail: $104.00
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Carrier EXPXXFIL0020 EZ-FLEX Air Purifier Filter
(EXPXXFIL0020)

The Carrier EXPXXFIL0020 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 EXPXXFIL0020 EZ-FLEX Air Purifier Filter
Our Price: $41.95
Retail: $49.95
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Lennox X8788 MERV 16 PureAir Filter Replacement
(X8788)

The Lennox X8788 MERV 16 filter is made for your PureAir PC020-28 unit. Also known as a healthy climate filter, this pleated filter will remove harmful airborne contaminants from your home. If you or your family members suffer from asthma or allergi

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Lennox X8788 MERV 16 PureAir Filter Replacement
Our Price: $102.67
Retail: $109.99
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Lennox X8790 MERV 16 Air Filter Replacement
(X8790)

The Lennox X8790 MERV 16 Air Filter Replacement is a replacement air filter for the Lennox PCO14-23 PureAir Air Filtration System. This furnace filter measures approximately 20" x 21" x 5" and features a MERV 16 rating. A higher MERV rating results


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Lennox X8790 MERV 16 Air Filter Replacement
Our Price: $96.00
Retail: $229.00
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Trane Perfect Fit BAYFTFR21M Compat. 21x27x5 2pk
(FFC21275TRNM11)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTFR21M or FLR06070, which is a 21x27x5 Air Filter used in several Trane Air Cleaners


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Trane Perfect Fit BAYFTFR21M Compat. 21x27x5 2pk
Our Price: $99.00
Retail: $100.00
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Lennox X6667 MERV 11 Air Filter Media Replacement
(X6667)

The Lennox X6667 MERV 11 Air Filter Media Replacement is a replacement air filter for Lennox Healthy Climate PureAir PCO-20 air cleaners. This box media utilizes a MERV 11 pleated filter that captures particles as small as 0.3 microns in size.


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Lennox X6667 MERV 11 Air Filter Media Replacement
Our Price: $31.20
Retail: $39.99
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Trane Perfect Fit BAYFTAH21M Compat. 21.5x21x5 2pk
(FFC215215TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTAH21M or FLR06072, which is a 21.5x21x5 Air Filter used in several Trane Air Cleaners


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Trane Perfect Fit BAYFTAH21M Compat. 21.5x21x5 2pk
Our Price: $98.00
Retail: $99.00
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Holmes HAPF21, 9000436 Replacement Filter
(HAPF21)

The Holmes HAPF21 Replacement Filter is the main HEPA filter in Holmes models HAP222, HAP221, HAP220, HAP223, and HAP2234. Also known as part number HAPF21CS.


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Holmes HAPF21, 9000436 Replacement Filter
Our Price: $10.00
Retail: $11.00
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Whirlpool 8171433 Air Pre-Filter (Small)
(8171433)

The Whirlpool 8171433 Activated Carbon Air Pre-Filter fits Whirlpool Model AP150 and AP250. This pre-filter pre-cleans the air, reduces odors and filtering out larger particles therefore extending the life of your HEPA filter. Four pack.


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Whirlpool 8171433 Air Pre-Filter (Small)
Our Price: $25.99
Retail: $30.00
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