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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:


Honeywell Trane Perfect Fit 21.5x21x5 BAYFTAH21M 3-Pack
(HTRN2121T1)

These three Honeywell air filters are compatible furnace filters that can be used as upgrades over the Trane Perfect Fit filter of the same size. Genuine Trane Perfect Fit filters have only a MERV 8 rating, while these compatible Honeywell furnace f

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Honeywell Trane Perfect Fit 21.5x21x5 BAYFTAH21M 3-Pack
Our Price: $149.00
Retail: $150.00
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Honeywell F100F2044 25x20 Whole House Air Cleaner
(F100F2044)

The Honeywell F100F2044 25x20 Whole House Air Cleaner does not require electrical connections and mounts in the return air duct in any position.

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Honeywell F100F2044 25x20 Whole House Air Cleaner
Our Price: $123.69
Retail: $134.99
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AMP-G8-1056 Replacement for Goodman G13MU2025 3-Pack
(G8-1056)

The Goodman G13MU2025 Air Filter Replacements - 3 Pack has more surface area, which means more collection area, lower static pressure and longer filter life.

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AMP-G8-1056 Replacement for Goodman G13MU2025 3-Pack
Our Price: $174.00
Retail: $199.99
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Lennox 92X17 HEPA Filter Cartridge Replacement
(92X17)

This Lennox 92X17 HEPA Filter Cartridge Replacement offers a 3-stage filtration process is used to create a very effective filtration system. The Lennox Hepa Air Filter offers possible air-filtration performance.

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Lennox 92X17 HEPA Filter Cartridge Replacement
Our Price: $128.25
Retail: $198.40
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FiltersFast A10PR R Replacement for Lasko 5000L
(Lasko 5000L R)

The FiltersFast A10PR R is the correct replacement for the Lasko 5000L R and for the following humidifier models:


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FiltersFast A10PR R Replacement for Lasko 5000L
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Retail: $10.99
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Honeywell HC-819 Humidifier Wick Filter
(Honeywell HC-819 R)

The Honeywell HC-819 Humidifier Wick Filter-3 Pack is the correct compatible replacement for the following models of humidifiers: Duracraft DH-8000 Duracraft DH-8002 Duracraft DH-8004 Duracraft DH-8005 This humidifier wick filter removes mi


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Honeywell HC-819 Humidifier Wick Filter
Our Price: $10.45
Retail: $16.99
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BestAir R14ALLM Replacement For Bionaire A1000C 2-Pack
(Bionaire A1000C 1 R)

The Bionaire A1000C Carbon PreFilter 2-Pack is the correct replacement for the following models of Bionaire air cleaners: SH1240 SH1260 SH1840 SH1860 This carbon prefilter's dimensions are 11.5" x 11.5" x 0.2". This Bionaire prefilter traps


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BestAir R14ALLM Replacement For Bionaire A1000C 2-Pack
Our Price: $17.99
Retail: $19.99
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3M OAC100RF Replacement Air Filter 6-Pack
(OAC100RF)

The 3M OAC100RF Replacement Air Filter is the replacement filter for the 3M Filtrete OAC100 Office Air Cleaner. This easy to change filter reduces airborne dust, pollen and particulates down to 0.01 microns.

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3M OAC100RF Replacement Air Filter 6-Pack
Our Price: $133.94
Retail: $162.00
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Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
(455601-001C)

The Trion Duct Mount HE Plus 1400, 455601-001C is an Electronic Whole House Air Purification System. The HE Plus 1400 includes an elctronic air flow sensor. Genuine Trion Fedders product. Learn how the HE Plus 1400 can help you live a healthy life..

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Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
Our Price: $371.95
Retail: $440.00
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Lennox X2678 HEPA 20 Charcoal Carbon Filter
(X2678)

The Lennox X2678 HEPA 20 Charcoal Carbon Filter is a replacement charcoal carbon filter for the Lennox Healthy Climate HEPA 20 Bypass Filtration Unit. This is an inner filter used in the third stage of filtration for the removal of odors


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Lennox X2678 HEPA 20 Charcoal Carbon Filter
Our Price: $38.00
Retail: $40.28
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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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3M Filtrete OAC200 Replacement Air Cleaner Filter 6-Pack 6-Pack
(OAC200RF)

The 3M Filtrete OAC200 Replacement Air Cleaner Filter is a replacement filter for the 3M Filtrete OAC200 Office Air Cleaner.


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3M Filtrete OAC200 Replacement Air Cleaner Filter 6-Pack
Our Price: $275.94

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Carrier 49BB680044 Humidifier Filter Replacement
(49BB680044)

The Carrier 49BB680044 is the correct replacement for the following humidifiers: Carrier 49BB001/910A Whole House Humidifiers Carrier 49BH/912A-912B Whole House Humidifiers Bryant Whole House Humidifiers


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Carrier 49BB680044 Humidifier Filter Replacement
Our Price: $56.99
Retail: $69.99
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Goodman G13MU1625 Replacement Air Filters 3-Pack
(G1-1056)

The Goodman G13MU1625 Replacement Air Filters uses both charged fibers and traditional mechanical filtration principles.

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Goodman G13MU1625 Replacement Air Filters 3-Pack
Our Price: $153.95
Retail: $179.99
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Totaline DTLP102-2025 20x25 MERV 11 Filter
(DTLP102-2025)

The Totaline DTLP102-2025 20x25 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 DTLP102-2025 20x25 MERV 11 Filter
Our Price: $41.99
Retail: $49.99
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Hunter 30965 QuietFlo HEPA Purifier Filter 3-Pack
(30965)

The Hunter 30965 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


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Hunter 30965 QuietFlo HEPA Purifier Filter
Our Price: $110.97

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Norelco CAF150 Carbon PreFilter 2-Pack
(NORELCO CAF150 1 R)

The Norelco CAF150 Carbon PreFilter 2-Pack is the correct replacement for the following models of Norelco air cleaners: CAS 1050 CAS 1051 CAS 2051 This carbon prefilter measures 7.28" x 2.36" x 9.45". This Norelco prefilter comes with two fi


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Norelco CAF150 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Lennox 92X10 40/60 HEPA Filter Replacement
(92X10)

This Lennox Charcoal Carbon Filter 92X10 is designed to capture 99.97% of particulates down to 0.3 micron that pass through it. The Lennox Healthy Climate filter should be replaced every 2-5 years.

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Lennox 92X10 40/60 HEPA Filter Replacement
Our Price: $261.99
Retail: $284.96
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Lennox 94X98 HEPA 20 Filter System Carbon Canister
(94X98)

The Lennox 94X98 HEPA 20 Filter System Carbon Canister is a replacement carbon canister for the Lennox HEPA 20 whole house air cleaner, which is designed to be attached to the ductwork of a home or office.

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Lennox 94X98 HEPA 20 Filter System Carbon Canister
Our Price: $101.86
Retail: $141.00
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Filtrete One Inch Odor Air Filter - 20 x 30 x 1 4-Pack
(Filtrete-Odor-20301)

The Filtrete One Inch Odor Air Filter - 20 x 30 x 1 is constructed with activated carbon to remove common odors from your home, including pet, smoke, cooking, mildew, and cleaning chemicals. In addition to creating a more breathable atmosphere, this


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Filtrete One Inch Odor Air Filter - 20 x 30 x 1
Our Price: $86.44

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3M Filtrete OAC150 Replacement Filter - 6-Pack 6-Pack
(OAC150RF)

The 3M Filtrete OAC150 Replacement Air Cleaner Filter is used in the 3M Filtrete OAC150 Office Air Cleaner. This replacement filter is also known as part number OAC150RF.

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3M Filtrete OAC150 Replacement Filter - 6-Pack
Our Price: $162.00

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Honeywell F300E1035 20x25 Electronic Air Cleaner
(F300E1035)

The Honeywell F300E1035 20x25 Electronic Air Cleaner operates with all gas, oil and electric forced warm air furnaces and air conditioning systems.

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Honeywell F300E1035 20x25 Electronic Air Cleaner
Our Price: $641.99
Retail: $699.99
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FiltersFast 5" Trane BAYFTFR21M Compatible 2-Pack
(FFC21275TRN OKGM)

The FiltersFast 5" Trane Perfect Fit BAYFTFR21M Compatible FFC21275TRN OKGM fits the following: any air cleaner that calls for a 21" x 27" x 5" filter This FiltersFast air filter also replaces the Trane Perfect Fit BAYFTFR21M filter. This Tr

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Discontinued Product Read Description.
FiltersFast 5" Trane BAYFTFR21M Compatible 2-Pack
Our Price: $100.00
Retail: $104.99
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BestAir R14ALLM Replacement For Bemis 1104 2-Pack
(Bemis 1104 1 R)

The Bemis 1104 is the correct replacement for the following air purifier: Bemis True HEPA Air Purification System 127-001.


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BestAir R14ALLM Replacement For Bemis 1104 2-Pack
Our Price: $17.99
Retail: $19.99
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FiltersFast A10PR R Replacement for Carrier P110-0007
(Carrier P110-0007 R)

The Carrier P110-0007 is the compatible replacement for the following humidifiers: Carrier HUMBBxxx, Carrier HUMBBSBP221-A, Carrier, Carrier P110-200 and Carrier Stainless Steel SBP2212 Humidifiers.


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FiltersFast A10PR R Replacement for Carrier P110-0007
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Retail: $10.99
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