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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:


Trion Air Bear 455602-625 Supreme 1400 Air Cleaner Merv 11
(455602-625)

The Trion Air Bear Supreme 1400 Air Cleaner Merv 11 is a whole house air cleaner that captures and holds pollutants within its filter. The filter then efficiently allows the air to pass throughout the system. The Trion Supreme 1400 features a rugged

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Trion Air Bear 455602-625 Supreme 1400 Air Cleaner Merv 11
Our Price: $112.99
Retail: $131.99
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Trion Air Bear 455602-425 Cub Air Cleaner 16x25x3 Merv 8
(455602-425)

The Trion Air Bear Cub Air Cleaner 16x25x3 is a genuine filter for use in your heating and cooling system. This Trion Air Bear Media Air Cleaner has a MERV 8 rating that will rid your home of air contaminants including lint, dust, pollen, mold spore


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Trion Air Bear 455602-425 Cub Air Cleaner 16x25x3 Merv  8
Our Price: $82.99
Retail: $99.99
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Trion Air Bear 455602-925 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 26 to 27 business days.
Trion Air Bear 455602-925 Cub Air Cleaner 16x25x3 Merv 11
Our Price: $87.99
Retail: $102.99
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Trion Air Bear 447380-510 Right Angle Air Cleaner Merv 11
(447380-510)

The 447380-510 is the correct air cleaner that uses: 5" thick electrostatically charged pleated filter media.

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In Stock! Ships in 15 to 16 business days.
Trion Air Bear 447380-510 Right Angle Air Cleaner Merv 11
Our Price: $132.99
Retail: $155.99
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FiltersFast 14ALL Replacement For Bionaire 115-CS Air Purifier Carbon PreFilter
(Bionaire 115-CS R)

The Bionaire 115-CS Air Purifier Carbon PreFilter is a pre-filter that measures approximately 1/4" thick. This Bionaire filter helps to reduce household odors and keep dust and large particles from entering and clogging your filter.


Out of stock
FiltersFast 14ALL Replacement For Bionaire 115-CS Air Purifier Carbon PreFilter
As Low As: $10.95
Retail: $19.99
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FiltersFast 14ALL Replacement For Bionaire A0802C Air Purifier Carbon PreFilter
(Bionaire A0802C R)

The Bionaire A0802C Air Purifier Carbon PreFilter is for use in your Bionaire SH0840 Air Purifier. This prefilter has dimensions of 9.6" x 9.3" x 0.2" inches.The Bionaire A0802C will trap chemical substances and odors found in your air.


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FiltersFast 14ALL Replacement For Bionaire A0802C Air Purifier Carbon PreFilter
As Low As: $10.95
Retail: $19.99
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FiltersFast 14ALL Replacement For Hamilton Beach 04230 Prefilter
(Hamilton Beach 04230 R)

The Hamilton Beach 04230 carbon prefilter will protect your air purifiers HEPA filter. These carbon prefilters will trap harmful particulates and unpleasant odors.


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FiltersFast 14ALL Replacement For Hamilton Beach 04230 Prefilter
As Low As: $10.95
Retail: $19.99
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Lennox 69H85 Whole House Air Purifier Filter 6-Pack
(69H85)

The Lennox 69H85 Whole House Air Purifier Filter is a replacement air filter for the EAC12-14 and EAC-14 Healthy Climate Electronic Air Cleaner from Lennox. This washable pre-filter traps large pollutants, like dust and dirt particles, and helps you


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Lennox 69H85 Whole House Air Purifier Filter
Our Price: $77.10

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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: $41.95

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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack 4-Pack
(98N42)

The Lennox 98N42 is a MERV 8 furnace filter 4-pack for your home. This furnace filter will protect your home from unhealthy contaminants and help keep your heating and cooling bill low.


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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack
Our Price: $43.96

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Lennox 98N43 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N43)

The Lennox 98N43 MERV 8 Pleated Furnace Filters 4-Pack is the correct replacement for all furnaces that require a 20x20x1 filter. These Lennox Healthy Climate filters remove particles and bioaerosols as small as 3 microns


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Lennox 98N43 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $99.00

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Lennox 98N44 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N44)

This Lennox 98N44 MERV 8 Pleated Furnace Filters 4-Pack package is pleated filters that capture airborne particles and allergens between three to ten microns in size. The Lennox 98N44 MERV 8 filters come in this cost-cutting 4-pack package.


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Lennox 98N44 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $43.99

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Lennox 98N45 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N45)

This Lennox 98N45 MERV 8 Pleated Furnace Filters 4-Pack serve as an excellent choice to upgrade from the generic fiberglass filters in your local hardware store. The healthy climate filters come in this money-saving 4-pack package.


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Lennox 98N45 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $46.96

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Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N46)

This Lennox 98N46 MERV 8 Pleated Furnace Filters 4-Pack serves as an excellent choice to upgrade from the generic fiberglass filters in your local hardware store. The healthy climate filters come in this money-saving 4-pack package.


In Stock! Ships in 1 to 2 business days.
Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $41.96

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Lennox X6666 MERV 16 Pleated Air Filter Media for PCO-12C 5-Pack
(X6666)

This Lennox Box Filter is a genuine MERV 16 filter. The Lennox Furnace Filter Box should only be replaced every six months.

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Lennox X6666 MERV 16 Pleated Air Filter Media for PCO-12C
Our Price: $459.75

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Lennox X8304 MERV 10 Expandable Filter Kit
(X8304)

This Lennox Expandable Filter is a genuine Lennox part. The Lennox Healthy Climate Filter is a viable replacement for several Air Cleaner Models.

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Lennox X8304 MERV 10 Expandable Filter Kit
Our Price: $102.99
Retail: $119.99
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Lennox X8307 MERV 16 Expandable Filter Kit
(X8307)

The Lennox X8307 MERV 16 Expandable Filter Kit is the correct replacement for several models of the following brands of air cleaners: Bryant & Carrier Honeywell Lennox Trion This Lennox Healthy Climate filter kit contains one filter and one

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Lennox X8307 MERV 16 Expandable Filter Kit
Our Price: $138.00
Retail: $169.99
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Lennox X8308 MERV 16 Expandable Filter Kit
(X8308)

This Lennox Expandable Filter is a genuine Lennox part. The Lennox Healthy Climate Filter is a viable replacement for several Air Cleaner Models.

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Lennox X8308 MERV 16 Expandable Filter Kit
Our Price: $132.99
Retail: $155.99
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Holmes HWF64 Replacement for Honeywell HC-24 Humidifier Filter
(Honeywell HC-24 R)

The Holmes HWF64 Humidifier Filter Replacement is a J replacement humidifier filter for the Holmes Tabletop Cool Mist Humidifier models.


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Holmes HWF64 Replacement for Honeywell HC-24 Humidifier Filter
As Low As: $16.99
Retail: $25.99
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Essick Air 1104 Carbon PreFilter Replacement 6-Pack
(1104SS)

The Essick Aire 1104 carbon pre filter is manufactured for your 127 001 series air purifier. This air purifier removes 99.97% of all dust, pollen and bacteria, and the Essick Air 1104 filter will keep your purifier working at its best. The Essick ai


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Essick Air 1104 Carbon PreFilter Replacement
Our Price: $66.18

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FiltersFast 5" FFC175275TRN OKGM Air Filter - 2-Pack
(FFC175275TRN OKGM)

The FiltersFast 5" Trane Compatible FFC175275TRN OKGM is a compatible replacement air filter that replaces the Trane BAYFTFR17M and Trane FLR06069 air filters, both of which can be used in several models of Trane Air Cleaners. This 5" filter boasts


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FiltersFast 5" FFC175275TRN OKGM Air Filter - 2-Pack
Our Price: $71.99
Retail: $104.99
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Trion 3508 Humidifier Filter Pad Replacement
(3508)

The Trion 3508 Humidifier Filter Pad Replacement is a replacement humidifier pad for the Herrmidifier Model 3500 Humidifiers. This Trion humidifier filter is also known as a foam filter belt and measures approximately 16 inches x 11 3/8 inches x 1 1


In Stock! Ships in 17 to 18 business days.
Trion 3508 Humidifier Filter Pad Replacement
Our Price: $22.19
Retail: $24.99
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Lennox Y2921, HCC16-28 Filter Cabinet System MERV 16
(Y2921)

The Lennox HCC16-28 Filter Cabinet System MERV 16 is an air cleaner cabinet that attaches directly to your HVAC system without causing any additional energy costs. The Lennox Healthy Climate HCC16-28 is ideal for whole-house air filtration. The Lenn

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Lennox Y2921, HCC16-28 Filter Cabinet System MERV 16
Our Price: $302.99
Retail: $355.99
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Honeywell FC40R1185 Return Air Grille Filter 18x18 5-Pack
(FC40R1185)

The Honeywell FC40R1185 Return Air Grille Filter 18x18 is a replacement air filter that mounts in most return filter grilles. The Honeywell return air grille filter features four inches of depth, which provides a higher efficiency than standard one


In Stock! Ships in 53 to 54 business days.
Honeywell FC40R1185 Return Air Grille Filter 18x18
Our Price: $257.50

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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
(1000-3000-0101)

The Trion 1000-3000-0101 Replacement Air Filter 2-Pack is a replacement air filter for the Trion CAC500 and CAC500 air cleaners. This CAC500M filter features pleated media to trap contaminants and improve overall indoor air quality. This Trion filte

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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
Our Price: $218.67
Retail: $299.99
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