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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


RPS R14ALLM Replacement For Kenmore 83120 Carbon PreFilter 2-Pack
(KENMORE 83120 1 R)

The Kenmore 83120 Carbon PreFilter 2-Pack is the correct replacement for: several models of Kenmore air purifiers This carbon prefilter has a shipping weight of 3 lbs. This Kenmore prefilter 2-pack comes with 2 filters in each pack.


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kenmore 83120 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Honeywell F100F2036 20x20 Whole Home Air Purifier
(F100F2036)

The Honeywell F100F2036 20x20 Whole Home Air Purifier uses a 4-inch extended media that makes replacement quick and easy.


In Stock! Ships in 1 to 2 business days.
Honeywell F100F2036 20x20 Whole Home Air Purifier
Our Price: $89.99

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Hunter 30931 HEPAtech Purifier Filter
(30931)

The Hunter 30931 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


In stock! Ships in 1 business day.
Hunter 30931 HEPAtech Purifier Filter
Our Price: $40.75
Retail: $49.99
You Save 18%!

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Honeywell Trane Perfect Fit 21.5x21x5 BAYFTAH21M 3-Pk
(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

Free shipping within the continental United States!

Special Order. Ships in 15 days.
Honeywell Trane Perfect Fit 21.5x21x5 BAYFTAH21M 3-Pk
Our Price: $149.00
Retail: $150.00
You Save 1%!

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GeneralAire 201-12880 MERV 11 Filter Media
(4050)

The GeneralAire 201-12880 is a compatible replacement for the following air cleaners: Aprilaire 2200 Air Cleaner Aprilaire 2250 Air Cleaner


In Stock! Ships in 14 to 15 business days.
GeneralAire 201-12880 MERV 11 Filter Media
Our Price: $49.99
Retail: $59.99
You Save 17%!

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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 2-Pack
(BAYFTFR24M2A)

The Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 fits the TFM245B0FR0 Perfect Fit High Efficiency Air Cleaner and easily slides in for quick use. This Trane Perfect Fit filter measures approximately 24.5" x 27" x 5" and has a MERV 8 rating for


Special Order. Ships in 15 days.
Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5
Our Price: $103.46

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Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 4-Pack 4-Pack
(BAYFTAH26P4A)

The Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 is a furnace air filter that fits several electronic and media air cleaner models from Trane. This Trane air filter boasts a MERV 8 rating for the reduction of particulates in your air, including


Special Order. Ships in 23 days.
Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 4-Pack
Our Price: $215.20

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Lennox 92X08 HEPA 40/60 Foam PreFilter
(92X08)

The Lennox 92X08 HEPA 40/60 Foam PreFilter is a replacement foam pre-filter for the HEPA 40 and HEPA 60 Lennox Healthy Climate Indoor Air Quality HEPA systems. Contaminated air passes through this carbon pre-filter, allowing it trap large dirt.


In stock! Ships in 1 business day.
Lennox 92X08 HEPA 40/60 Foam PreFilter
Our Price: $59.99
Retail: $69.99
You Save 14%!

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RPS R14ALLM Replacement For Honeywell 32001 Carbon PreFilter 2-Pack
(Honeywell 32001 1 R)

The Honeywell 32001 Carbon PreFilter 2-Pack is a high quality carbon pre-filter that removes household odors and other impurities. This Honeywell 32001 Carbon PreFilter 2-Pack should be replaced every three months for optimum performance.


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Honeywell 32001 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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RPS R14ALLM Replacement For Honeywell 35200 Carbon PreFilter 2-Pack
(Honeywell 35200 1 R)

The Honeywell 35200 is the correct replacement for the following air purifiers: Honeywell HEPA Air Purifier Cleaners


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Honeywell 35200 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Lennox X8306 MERV 16 Expandable Filter Kit
(X8306)

The Lennox X8306 expandable filter is a MERV 16 furnace filter for your home. This Lennox healthy climate filter measures 16x25x5 inches.

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Special Order. Ships in 2 days.
Lennox X8306 MERV 16 Expandable Filter Kit
Our Price: $142.00
Retail: $169.99
You Save 16%!

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Honeywell Trane Perfect Fit Filter 21x27x5 BAYFTFR21M 3-Pack
(HTRN2127T1)

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

Free shipping within the continental United States!

Special Order. Ships in 12 days.
Honeywell Trane Perfect Fit Filter 21x27x5 BAYFTFR21M
Our Price: $154.50

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GeneralAire F1018 MERV 11 16x25x4 Media Filter
(4571)

The General Aire F1018 MERV 11 16x25x4 Media Filter is the correct filter replacement for the General Air TERSus 1200, and removes airborne allergens and particles down to 0.3 microns to improve indoor air quality of your home dramatically.


Special Order. Ships in 9 days.
GeneralAire F1018 MERV 11 16x25x4 Media Filter
Our Price: $51.99
Retail: $59.99
You Save 13%!

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Carrier FILCCCAR0020 Air Purifier Filter 2-Pack
(FILCCCAR0020)

The Carrier FILCCCAR0020 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 fits numerous units including model numbers FIL


In Stock! Ships in 17 to 18 business days.
Carrier FILCCCAR0020 Air Purifier Filter
Our Price: $57.90

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RPS R14ALLM Replacement For Kenmore 83134 Carbon PreFilter 2-Pack
(KENMORE 83134 1 R)

The Kenmore 83134 Carbon PreFilter comes in this money-saving 2-pack package. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kenmore 83134 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Lennox 72H09 EAC-2000 Carbon Filter Replacement
(72H09)

The Lennox 72H09 EAC-2000 Carbon Filter Replacement is a replacement carbon air filter for the Lennox EAC-20 and EAC-2000 air cleaners. This charcoal filter is an genuine Lennox part and is made from high quality construction material.


Special Order. Ships in 5 days.
Lennox 72H09 EAC-2000 Carbon Filter Replacement
Our Price: $80.82
Retail: $111.40
You Save 27%!

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Trion Air Bear Supreme 2000 Air Cleaner Merv 11
(455602-525)

The Trion Air Bear Supreme 2000 Air Cleaner Merv 11 is a whole house air cleaner that filters various airborne particles. With this Trion Air Bear cleaner you will be able to capture and hold pollutants from the air inside the filter, which will all

Free shipping within the continental United States!

In Stock! Ships in 15 to 16 business days.
Trion Air Bear Supreme 2000 Air Cleaner Merv 11
Our Price: $90.95
Retail: $199.99
You Save 55%!

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Honeywell 50000293-003 Post Air Filter - 10x20 2pk 2-Pack
(50000293-003)

The Honeywell 50000293-003 is a post filter that fits the following electronic air cleaner models: Honeywell F50F Honeywell F58F Honeywell F300 The Honeywell 50000293-003 Post Air Filter - 10x20 improves the performance and efficiency of the


In Stock! Ships in 2 to 3 business days.
Honeywell 50000293-003 Post Air Filter - 10x20 2pk
Our Price: $87.98

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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


Special Order. Ships in 2 days.
Lennox X2678 HEPA 20 Charcoal Carbon Filter
Our Price: $38.00
Retail: $40.28
You Save 6%!

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Honeywell Trane BAYFTFR17M Perfect Fit Filter 17.5x27x5 3-Pack
(HTRN1727T1)

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


In Stock! Ships in 3 to 4 business days.
Honeywell Trane BAYFTFR17M Perfect Fit Filter 17.5x27x5
Our Price: $144.00

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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 0.1 microns. This is a true HEPA filter and a genuine OEM Hunter part.


Special Order. Ships in 5 days.
Hunter 30965 QuietFlo HEPA Purifier Filter
Our Price: $110.97

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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

Free shipping within the continental United States!

In stock! Ships in 1 business day.
GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
Our Price: $105.99

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American Metal OEMRCP0205 Replacement For LG 5230W2A003C
(5230W2A003C)

The LG 5230W2A003C Comp. Microwave Charcoal Filter, made by the American Metal Filter Company, is a compatible replacement for the LG 5230W2A003C, LG 5230W2A003A, and GE WB02X10943 activated charcoal filters. This microwave grease filter reduces kit


In Stock! Ships in 12 to 13 business days.
American Metal OEMRCP0205 Replacement For LG 5230W2A003C
Our Price: $4.99

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Lennox 91X23 MERV 8 Pleated Air Filters 4-Pack
(91X23)

The Lennox 91X23 is a furnace and air conditioning filter that reduces the following allergens: Dust Pollen Mold spores


Special Order. Ships in 13 days.
Lennox 91X23 MERV 8 Pleated Air Filters 4-Pack
Our Price: $31.95
Retail: $38.95
You Save 18%!

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RPS R14ALLM Replacement For Kaz Premium Carbon PreFilter 2-Pack
(KAZ PREMIUM 1 R)

The Kaz Premium Carbon PreFilter 2-Pack is a replacement pack of pre-filters for the Kaza HEPAClean and HEPA Compact Tower model air purifiers. This two pack of carbon filters helps your HEPA filter reach maximum efficiency and reduces unwanted odor


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kaz Premium Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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