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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


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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FAPF02 Air Filter, Replacement for FAP02-RS
(FAPF02)

The Filtrete FAPF02 Air Filter is the replacement air cleaning filter for the Filtrete Ultra Clean Air Purifier FAP02-RS, FAP02. This electrostatically charged filter attracts & retains microparticles that can aggravate allergies and ...


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FAPF02 Air Filter, Replacement for FAP02-RS
Our Price: $24.14
Retail: $29.99
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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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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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Holmes HWF100 Humidifier Replacement Filter 3-pack
(HWF100)

Holmes, Harmony Humidifier HWF100 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HM630, HM729, HM4600, HM6000, HM6000RC, HM6005, HM6600, HM7204, HM7305, HM7305RC, HM7306, BCM645, BCM5520RC, and more...


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Holmes HWF100 Humidifier Replacement Filter 3-pack
Our Price: $14.00
Retail: $17.00
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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
Our Price: $53.50
Retail: $59.99
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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..


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Holmes HWF65 Replacement Humidifier Filter
Our Price: $15.99
Retail: $20.00
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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
(X6670)

This Lennox X6670 Fir Filter Media is able to capture particles as small as 0.3 microns. This Lennox Pleated Filter Media offers greater dust-holding ability.


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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
Our Price: $36.88
Retail: $39.95
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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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Aprilaire Spacegard 2200 Air Cleaner Seal Kit
(Aprilaire 4725)

The Aprilaire Spacegard 2200 Air Cleaner Seal Kit (Aprilaire 4725) is for use with the Aprilaire 2200 air cleaner and the Space-Gard 2200 air cleaner. This kit includes the necessary seals which are used to seal the following contacts: (1) between t


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Aprilaire Spacegard 2200 Air Cleaner Seal Kit
Our Price: $22.30
Retail: $34.99
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Universal Cut to Fit Carbon Pre Filter-2 Pack
(R14ALLM)

The Universal Cut to Fit Carbon Pre Filter-2 Pack is a replacement pack of two carbon pre-filters that fit a variety of air purifiers and air cleaners, including models from Bionaire, DeLonghi, Duracraft, Holmes, Honeywell Enviracare, Hunter QuietFl


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Universal Cut to Fit Carbon Pre Filter-2 Pack
Our Price: $16.99
Retail: $19.99
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Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
(FFC21235TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTAH23M or FLR06073, which is a 21x23.5x5 Air Filter used in several Trane Air Cleaner.


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Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
Our Price: $98.00
Retail: $99.00
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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
Our Price: $32.95
Retail: $39.99
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Aprilaire SpaceGard 2200 Air Filter - MERV 8
(FFC20256SGM8)

The Aprilaire SpaceGard 2200 Air Filter is an economical alternative for the OEM Aprilaire 2200 and 2250 Air Filter Media Replacement.


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Aprilaire SpaceGard 2200 Air Filter - MERV 8
Our Price: $55.99
Retail: $59.99
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Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
(FFC175275TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast 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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Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
Our Price: $69.99
Retail: $99.99
You Save 30%!

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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 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: $29.90
Retail: $34.10
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Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
(FFC21235TRNM8)

For an economical alternative to the genuine OEM Trane 21x23x5 Perfect Fit BAYFTAH23M Filter, try this compatible Trane MERV 8 21x23x5 Perfect Fit BAYFTAH23M Filter.


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Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
Our Price: $65.00
Retail: $70.00
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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: $43.50
Retail: $73.34
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Trane Perfect Fit BAYFTAH23M2 20.1" x 23.2" x 5"
(BAYFTAH23M2)

The Trane Perfect Fit BAYFTAH23M2 23.5x21x5 Air Filter is a replacement air filter for the Trane model BAYFRAME215A and TFM215A0AH1 air cleaners. The Trane Perfect Fit filter measures approximately 23.5" x 21" x 5" and features a MERV 8 rating for t


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Trane Perfect Fit BAYFTAH23M2  20.1" x 23.2" x 5"
As Low As: $41.99
Retail: $50.99
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Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
(FFC20205TABM13)

The Trion 20x20x5 Air Bear Furnace Filter is the compatible version of the genuine Trion Air Bear Media Filter 20x20x5, 255649-103.


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Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
Our Price: $59.99
Retail: $80.00
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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.


Out of stock
Whirlpool 1183054 HEPA Filter
Our Price: $89.99
Retail: $149.99
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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: $46.99
Retail: $49.99
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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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Trane Perfect Fit BAYFTAH26M2A Filter 26x21x5
(BAYFTAH26M2A)

The Trane Perfect Fit BAYFTAH26M2A Filter 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, dirt, an


In stock! Ships in 1 business day.
Trane Perfect Fit BAYFTAH26M2A Filter 26x21x5
Our Price: $44.16
Retail: $49.99
You Save 12%!

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