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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:


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 8 to 9 business days.
Crane HS-1934 Replacement Air Purifier Filter Set
Our Price: $22.99
Retail: $24.99
You Save 8%!

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$2,000 Premium Fiberglass Air Filter
(Air 2000)

How does one simple fiberglass air filter cost $2,000? Must be one really good air filter, right?

Free shipping within the continental United States!

Out of stock
$2,000 Premium Fiberglass Air Filter
Our Price: $2,001.00

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Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack 2-Pack
(HAPF92)

The Holmes HAPF92CS Carbon Odor Pre-Filter 2-pack fits the Holmes Air Purifier model HAP292. It extends the life of your air purifier's HEPA filter (Holmes model HAPF38CS) by trapping over 4000 chemicals and eliminates odors.


In Stock! Ships in 1 to 2 business days.
Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack
Our Price: $15.98

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Honeywell FC200E1003 MERV 13 Media Filter-16x20x5
(FC200E1003)

The Honeywell FC200E1003 Media Filter fits all Honeywell 16x20 Air Cleaners including the F200E Enviracaire Elite Series and others. Genuine Honeywell Part.


In Stock! Ships in 2 to 3 business days.
Honeywell FC200E1003 MERV 13 Media Filter-16x20x5
As Low As: $77.49
Retail: $79.99
You Save 3%!

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Trion Air Bear Supreme 20x20 Media Air Cleaner
(455602-225)

The Trion Air Bear Supreme 20x20 Media Air Cleaner, part number 455604-019, provides a clean and controlled indoor air environment in your home by removing dirt, dust, pollen and other microscopic particles such as grease and soot from your air.

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In Stock! Ships in 22 to 23 business days.
Trion Air Bear Supreme 20x20 Media Air Cleaner
Our Price: $111.99
Retail: $120.74
You Save 7%!

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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


In Stock! Ships in 16 to 17 business days.
Lennox 69H85 Whole House Air Purifier Filter
Our Price: $71.10

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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.


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Lennox 72H09 EAC-2000 Carbon Filter Replacement
Our Price: $80.82
Retail: $111.40
You Save 27%!

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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.


In Stock! Ships in 14 to 15 business days.
Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack
Our Price: $37.95

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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: $95.00

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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: $39.99

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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.


In Stock! Ships in 7 to 8 business days.
Lennox 98N45 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $42.96

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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 6 to 7 business days.
Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $37.96

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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


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Lennox 91X23 MERV 8 Pleated Air Filters 4-Pack
Our Price: $31.95
Retail: $38.95
You Save 18%!

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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.


In Stock! Ships in 8 to 9 business days.
Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack
Our Price: $37.95

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Lennox 91X25 MERV 8 Pleated Air Filters 4-Pack
(91X25)

The Lennox 91X25 MERV 8 Pleated Air Filters 4-Pack is a replacement set of pleated air filters that arrives in a 4 pack. These Healthy Climate furnace filters boast a MERV 8 rating, which can reduce mold spores, dust, and tiny particles from your ai


In Stock! Ships in 9 to 10 business days.
Lennox 91X25 MERV 8 Pleated Air Filters
Our Price: $35.96

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Lennox X6666 MERV 16 Pleated Air Filter Media 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.

Free shipping within the continental United States!

In Stock! Ships in 1 to 2 business days.
Lennox X6666 MERV 16 Pleated Air Filter Media
Our Price: $509.75

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Duracraft HEP-5020 Air Cleaner Filter Replacement
(Duracraft HEP-5020 R)

The Duracraft HEP-5020 is the compatible replacement for the Duracraft air purifiers.


Out of stock
Duracraft HEP-5020 Air Cleaner Filter Replacement
Our Price: $44.99
Retail: $66.95
You Save 33%!

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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


In Stock! Ships in 8 to 9 business days.
Essick Air 1104 Carbon PreFilter Replacement
Our Price: $60.18

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Lennox X8346 MERV 16 Filter Upgrade Kit
(X8346)

The Lennox X8346 MERV 16 Filter Upgrade Kit is the correct upgrade for the following whole-house purification system: Lennox PureAir PCO 12C This Lennox upgrade kit contains 4 PureAir UV-A lamps, and 1 PureAir MERV 16 filter. This upgrade kit

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In Stock! Ships in 1 to 2 business days.
Lennox X8346 MERV 16 Filter Upgrade Kit
Our Price: $190.19
Retail: $215.00
You Save 12%!

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Lennox X7751 HCC20-28 Replacement Filter Cabinet
(X7751)

The Lennox X7751 replacement Healthy Climate Cabinet is used in air conditioning systems to provide whole house filtration. The metal construction provides durability for year round home comfort with little maintenance. The unit is not powered for r

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In Stock! Ships in 5 to 6 business days.
Lennox X7751 HCC20-28 Replacement Filter Cabinet
Our Price: $301.95
Retail: $349.99
You Save 14%!

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Lennox X8303 MERV 10 Expandable Filter Kit
(X8303)

The Lennox X8303 MERV 10 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


In Stock! Ships in 5 to 6 business days.
Lennox X8303 MERV 10 Expandable Filter Kit
Our Price: $49.50
Retail: $49.99
You Save 1%!

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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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In Stock! Ships in 1 to 2 business days.
Lennox X8304 MERV 10 Expandable Filter Kit
Our Price: $101.99
Retail: $104.99
You Save 3%!

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Lennox X8305 MERV 10 Expandable Filter Kit
(X8305)

The Lennox X8305 MERV 10 Expandable Filter Kit is a filter kit that includes a replacement expandable furnace filter and a replacement inner housing reusable filter frame. This expandable filter measures approximately 20x20x5.


In Stock! Ships in 5 to 6 business days.
Lennox X8305 MERV 10 Expandable Filter Kit
Our Price: $60.99
Retail: $99.99
You Save 39%!

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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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In Stock! Ships in 2 to 3 business days.
Lennox X8306 MERV 16 Expandable Filter Kit
Our Price: $142.00
Retail: $169.99
You Save 16%!

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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

Free shipping within the continental United States!

In Stock! Ships in 17 to 18 business days.
Lennox X8307 MERV 16 Expandable Filter Kit
Our Price: $137.00
Retail: $169.99
You Save 19%!

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Filters Fast - Air Filters

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