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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.


Air Filters full product list:


Totaline P102-1625 16x25 MERV 11 Filter
(P102-1625)

The Totaline P102-1625 16x25 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


In Stock! Ships in 1 to 2 business days.
Totaline P102-1625 16x25 MERV 11 Filter
Our Price: $33.95
Retail: $44.99
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Trion Trim T / Trim TX Air Cleaner Prefilter
(123324-008)

The Trion Trim T / Trim TX Air Cleaner Prefilter is an aluminum prefilter for electronic air cleaners. Trion Trim T electronic air cleaners are whole house air cleaners built for air duct system. Electricity is utilized to attract and capture dust,


Special Order. Ships in 3 days.
Trion Trim T / Trim TX Air Cleaner Prefilter
Our Price: $22.99
Retail: $29.99
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Honeywell HF100F1625 16x25x4 Replacement for Honeywell F100F2002
(F100F2002)

The Honeywell F100F2002 16x25 Whole House Air Cleaner uses a high efficiency filter that captures airborne particles in the air circulated through the unit, as small as 0.3 microns.

Free shipping within the continental United States!

Special Order. Ships in 3 days.
Honeywell  HF100F1625 16x25x4 Replacement for Honeywell F100F2002
Our Price: $106.99
Retail: $149.99
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Holmes HAPF41 Air Purifier Carbon Prefilter 2-Pack
(ROHAPF41M)

The Holmes HAPF41 Air Purifier Carbon PreFilter-2 Pack is a replacement pack of carbon pre-filters for the Holmes HAP-300 and Holmes HAP-3004 air purifiers. This two pack of carbon filters protects the HEPA filter of your Holmes air cleaner and prev


Special Order. Ships in 13 days.
Holmes HAPF41 Air Purifier Carbon Prefilter
Our Price: $17.96

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GeneralAire GA23 Humidifier Vapor Pad Replacement 10-Pack
(7923)

Humidifier vapor pads, sometimes called humidifier filter pads or vapor pad replacements, are one of the most important elements in a humidifier. This is because they are the key component in creating the vapor that re-introduces moisture into dry a


In stock! Ships in 1 business day.
GeneralAire GA23 Humidifier Vapor Pad Replacement
Our Price: $109.90

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Lennox X4137 HEPA-20 92017-11 Carbon PreFilter Replacement
(X4137)

The Lennox X4137 HEPA 20 Carbon PreFilter Replacement is a replacement carbon pre-filter for the Lennox Healthy Climate HEPA 20 Filtration System. This carbon pre-filter is the first stage of the HEPA 20 filtration process.


In Stock! Ships in 5 to 6 business days.
Lennox X4137 HEPA-20 92017-11 Carbon PreFilter Replacement
Our Price: $34.95
Retail: $46.95
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Honeywell 32000146-001 Humidifier Pad for HE120
(32000146-001)

The Honeywell 32000146-001 is the Replacement Humidifier Pad for HE120. Comes complete with clips. Also known as 32000146-001/U. Geniune Honeywell Replacement Part.


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Honeywell 32000146-001 Humidifier Pad for HE120
Our Price: $21.99
Retail: $29.00
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Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack 4-Pack
(91X24)

The Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack is a set of pleated air filters that measures approximately 15x20x1 and has an a MERV 8 rating. This air conditioner filter arrives in a convenient 4 pack, which will last up to one year.


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Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack
Our Price: $37.95

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BestAir R14ALLM Replacement For Kenmore 83120 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.


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BestAir R14ALLM Replacement For Kenmore 83120 2-Pack
Our Price: $17.99
Retail: $19.99
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BestAir R14ALLM Replacement For Kenmore 83176 2-Pack
(KENMORE 83176 1 R)

The Kenmore 83176 Carbon PreFilter comes in this cost-cutting 2-pack package. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


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BestAir R14ALLM Replacement For Kenmore 83176 2-Pack
Our Price: $17.99
Retail: $19.99
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Honeywell FC40R1110 Return Grille Air Filter 14X20x3
(FC40R1110)

The Honeywell FC40R1110 is a return air grille filter that fits the following: Any return air grille that uses a 14 inch x 20 inch x 4 inch filter The Honeywell FC40R1110 Furnace Air Filter - 14X20 has a Minimum Efficiency Reporting Value (MER


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Honeywell FC40R1110 Return Grille Air Filter 14X20x3
Our Price: $62.95
Retail: $139.98
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Trion Air Bear Cub Air Cleaner 16x25x3 Merv 11
(455602-925)

The 455602-925 is the correct air cleaner that uses: 16" X 25" X 3" MERV 11 Air Bear Filter Replacements.

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In Stock! Ships in 3 to 4 business days.
Trion Air Bear Cub Air Cleaner 16x25x3 Merv 11
Our Price: $86.99
Retail: $99.99
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Duracraft ACA-1010 Air Cleaner Filter Replacement
(ACA-1010 R)

The Duracraft ACA-1010 Air Cleaner Filter Replacement is a HEPA filter which is 99.97% effective at removing dust, dirt, pollen, fibers, pet hair and dander, mold and spores as small as 0.3 microns.


In Stock! Ships in 2 to 3 business days.
Duracraft ACA-1010 Air Cleaner Filter Replacement
Our Price: $20.99
Retail: $24.39
You Save 14%!

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3M Filtrete Dust Reduction Filter - Filtrete 300 6-Pack
(Filtrete 300)

The Filtrete 300 Dust Reduction Filter is a replacement non-electrostatic pleated filter that attracts and captures household dust


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3M Filtrete Dust Reduction Filter - Filtrete 300
Our Price: $42.90

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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk 2-Pack
(AB-51625-8)

The Trion AB-51625-8 replaces the following Trion Air Bear air filters: Air Bear 1400 - 255649-103 Air Bear 1400 - 229990-103 Air Bear 2000 - 255649-102


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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk
Our Price: $63.90

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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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FiltersFast Replacement Filter For Trion Air Bear 20x25x5
(AB20258)

The AB20258 is the correct air filter replacement used in Trion Air Bear, Air Bear Classic, Air Bear Plus 2000 and Trion Air Bear Supreme 2000 Air Cleaners.


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FiltersFast Replacement Filter For Trion Air Bear 20x25x5
Our Price: $40.98
Retail: $50.00
You Save 18%!

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Carrier 318501-761 Humidifier Water Filter Pad
(Carrier 318501-761)

The Carrier 318501-761 is the correct replacement for the following humidifiers: Carrier 49WS020/914A Humidifiers Carrier 914AW066A Humidifiers Carrier P110-WTR2019A Humidifiers


Special Order. Ships in 12 days.
Carrier 318501-761 Humidifier Water Filter Pad
Our Price: $19.60
Retail: $19.99
You Save 2%!

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Lennox X8306 MERV 16 HCXF16-16 Expandable Filter Kit
(X8306)

The Lennox X8306 expandable filter HCXF16-16 is a MERV 16 furnace filter for your home. This Lennox healthy climate filter measures 16x25x5 inches.

Free shipping within the continental United States!

In Stock! Ships in 8 to 9 business days.
Lennox X8306 MERV 16 HCXF16-16 Expandable Filter Kit
Our Price: $142.95
Retail: $169.99
You Save 16%!

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Spacegard Aprilaire 2600 Filter Media Replacement 10-Pack
(Aprilaire 261)

This genuine Spacegard Aprilaire 2600 Filter Media Replacement, also known as the Aprilaire 261 Filter, is the replacement filter used in the Spacegard Aprilaire 2600 Air Cleaner. The Aprilaire 261 Air Filter / Aprilaire 2600 Replacement Filter is a


Special Order. Ships in 9 days.
Spacegard Aprilaire 2600 Filter Media Replacement
Our Price: $639.90

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BioStrike Ceiling Fan Air Filter - BioStrike CFF
(BioStrike CFF)

The BioStrike Ceiling Fan Air Filter (BioStrike CFF) can be used with most ceiling fans to reduce dust, dirt, hair, pollen, pet dander, mold, and other airborne allergens. It attaches to the ceiling fan blade(s) to provide air filtration every time


In stock! Ships in 1 business day.
BioStrike Ceiling Fan Air Filter - BioStrike CFF
Our Price: $11.49
Retail: $14.99
You Save 23%!

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FiltersFast 1" Air Filters MERV 8 Replacement for Rheem FPR 4 6-Pack
(FFM8 6pk RH)

The FiltersFast FFM8 6-Pack is the compatible replacement for the Rheem Basic Household Pleated Air Filter.


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FiltersFast 1" Air Filters MERV 8 Replacement for Rheem FPR 4 6-Pack
Our Price: $43.95
Retail: $49.99
You Save 12%!

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Crane HS-1934 Replacement Air Purifier Filter Set
(HS-1934)

The Crane HS-1934 replacement air purifier filter kit features an advanced four level filtration system which removes germs, viruses, and bacteria as well as many different airborne allergens such as dust, pollen, smoke, pet dander, mold spores.


In Stock! Ships in 5 to 6 business days.
Crane HS-1934 Replacement Air Purifier Filter Set
Our Price: $22.99
Retail: $24.99
You Save 8%!

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American Metal Filter RCP0907 Replacement Range Hood Filter
(RCP0907)

The GE WB2X8293 Compatible Range Hood Filter measures 9" x 10 1/2" x 3/8" (measure your old filter to ensure a perfect fit). This carbon range hood filter is a compatible replacement for the GE WB2X8293 and is not washable. This charcoal filter opti


In Stock! Ships in 7 to 8 business days.
American Metal Filter RCP0907 Replacement Range Hood Filter
Our Price: $7.09
Retail: $9.99
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FiltersFast A10PR R Replacement for BDP P110-0007
(BDP P110-0007 R)

The FiltersFast A10PR R is the correct replacement for the BDP P110-0007 R and for the following humidifier models:


In stock! Ships in 1 business day.
FiltersFast A10PR R Replacement for BDP P110-0007
As Low As: $6.99
Retail: $10.99
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