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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


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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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.

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Lennox X6666 MERV 16 Pleated Air Filter Media
Our Price: $509.75

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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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Lennox X7751 HCC20-28 Replacement Filter Cabinet
Our Price: $301.95
Retail: $349.99
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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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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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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: $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.


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Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $37.96

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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: $95.00

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Lennox 72H03 Air Cleaner Filter Cell
(72H03)

This Lennox 72H03 Air Cleaner Filter Cell is a high quality filter cell that provides effective air filtration. The Lennox 72H03 Air Cleaner Filter Cell is a Genuine Lennox replacement filter for central air cleaners.

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Lennox 72H03 Air Cleaner Filter Cell
Our Price: $330.40
Retail: $349.99
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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: $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
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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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Trion Air Bear 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 Supreme 1400 Air Cleaner Merv 11
Our Price: $111.99
Retail: $129.99
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Trion Air Bear Supreme 20x20 Air Cleaner Merv 11
(455602-725)

The Trion Air Bear Supreme 20x20 Air Cleaner is a for your whole house air cleaner. The Trion Supreme 20x20 features an easy installation that mounts directly to your heating or cooling system.The Trion 45560

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Trion Air Bear Supreme 20x20 Air Cleaner Merv 11
Our Price: $101.99
Retail: $109.99
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Trion Air Bear 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 Cub Air Cleaner 16x25x3 Merv  8
Our Price: $81.99
Retail: $99.99
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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 38 to 39 business days.
Trion Air Bear Cub Air Cleaner 16x25x3 Merv 11
Our Price: $86.99
Retail: $99.99
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Hoover WindTunnel Vacuum Belt Replacement 2-Pack
(40201160)

The Hoover WindTunnel Vacuum Belt Replacement 2-Pack is a genuine Hoover vacuum belt. These belts for Hoover vacuum cleaners fit upright vacuums including WindTunnel (except Self-Propelled), Bagless Widepath, Bagless PowerMax, Bagless Tempo, and


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Hoover WindTunnel Vacuum Belt Replacement 2-Pack
Our Price: $8.18
Retail: $9.99
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Crane Air Purifier with HEPA Filter - Shark Design
(EE-5064)

This Crane Air Purifier with HEPA filter is a personal air purifier designed to look like a shark (see above picture). It features an advanced five level filtration system to remove germs, viruses, and bacteria as well as many different airborne all


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Crane Air Purifier with HEPA Filter - Shark Design
Our Price: $72.25
Retail: $79.99
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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?

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

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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

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Honeywell Trane Perfect Fit 21.5x21x5 BAYFTAH21M 3-Pk
Our Price: $149.00
Retail: $150.00
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ED Lab Indoor Air Home Mold Test Kit 10-Pack
(BMSC)

This ED Lab Indoor Air Home Mold Test Kit is used to screen the air in your home for different mold types as well as fungal propagules. FiltersFast has teamed up with Environmental Diagnostics Lab (ED Lab) to provide this advanced home mold testing


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ED Lab Indoor Air Home Mold Test Kit
Our Price: $529.90

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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
(40120101)

This Hoover Power-Drive WindTunnel Vacuum Final Filter is a replacement vacuum final filter for Hoover Self-Propelled WindTunnel Upright vacuums with the Hoover Allergen Filtration System.


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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
Our Price: $11.47
Retail: $19.99
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Hoover SteamVac Vacuum Filter Recovery Tank F5851
(38762010)

This Hoover SteamVac Vacuum Filter is a Hoover replacement vacuum cleaner filter for the Hoover SteamVac and the Hoover Extractor. It fits Hoover models: F5815, F5817, F5821, F5825, F5827, F5831-900, F5833-900, F5859-900, F5863-900, F5858-920.


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Hoover SteamVac Vacuum Filter Recovery Tank F5851
Our Price: $13.08

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Crane Humidifier Filter Replacement - Licensed Ch.
(HS-1931)

This Crane Humidifier Filter (HS-1931) is a replacement demineralizing humidifier filter cartridge for the line of licensed character Crane humidifiers. It helps to reduce the build up of white dust mineral deposits in Crane humidifiers caused by ha


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Crane Humidifier Filter Replacement - Licensed Ch.
Our Price: $10.99

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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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In Stock! Ships in 53 to 54 business days.
Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
Our Price: $371.95
Retail: $440.00
You Save 15%!

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Filters Fast - Air Filters

" Thank you for your expert service when helping me get the proper filters for my old pool and filter system. The new ones are perfect and work very well. All the best! " - Jim, Alamo, CA
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