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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


Honeywell FC40R1136 18x24 Return Grille Air Filter 5-Pack
(FC40R1136)

The Honeywell FC40R1136 is the correct replacement for the following air return grille filters: Most air return filter grilles The Honeywell FC40R1136 18x24 Return Grille Air Filter measures 18 inches by 24 inches. This Honeywell FC40R1136 is


In Stock! Ships in 7 to 8 business days.
Honeywell FC40R1136 18x24 Return Grille Air Filter
Our Price: $165.90

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Honeywell F100F2010 20x25 Media Air Cleaner
(F100F2010)

The Honeywell F100F2010 20x25 Media Air Cleaner uses a 4-inch extended media that makes replacement quick and easy.


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Honeywell F100F2010 20x25 Media Air Cleaner
Our Price: $100.86
Retail: $104.99
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FC40R1830 18x30 Honeywell Return Grille AC Filter 5-Pack
(FC40R1830)

The Honeywell FC40R1830 18x30 Return Air Grille Filter is a high efficiency, replacement air filter for return grille applications. Honeywell replacement furnace filters capture airborne particles that circulate through the furnace filter.


In Stock! Ships in 6 to 7 business days.
FC40R1830 18x30 Honeywell Return Grille AC Filter
Our Price: $217.50

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Lennox X8349 MERV 10 Filter Maintenance Kit
(X8349)

The Lennox X8349 MERV 10 Filter Maintenance Kit is a filter maintenance kit for the Lennox PCO-12C PureAir Air Purification System. This maintenance kit includes one MERV 10 filter (X6664), one catalyst insert (75X73), and four UV bulbs (X8149). The

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Lennox X8349 MERV 10 Filter Maintenance Kit
Our Price: $196.00
Retail: $225.25
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Honeywell FC40R1094 12x12x3 Return Grille Filter
(FC40R1094)

The Honeywell FC40R1094 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x12x4. Genuine Honeywell Part.


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Honeywell FC40R1094 12x12x3 Return Grille Filter
As Low As: $39.50
Retail: $50.00
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GeneralAire F1020 MERV 13 Filter Media Replacement
(4562)

The General Air F1020 MERV 13 Filter Media measures 20"x25"x4" (approx.), and is correct filter for General Aire TERSus2000 Air Purification Systems.


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GeneralAire F1020 MERV 13 Filter Media Replacement
Our Price: $63.91
Retail: $69.99
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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: $7.97
Retail: $19.99
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Hoover Air Purifier HEPA & Pre-filter AH60010
(AH60010)

The Hoover AH60010 is the correct replacement for the following models of air purifiers: Hoover WH10100 Hoover WH10200 The Hoover Air Purifier HEPA & Pre-filter AH60010 contains a rinsable pre-filter and a HEPA media filter. The pre-filter of


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Hoover Air Purifier HEPA & Pre-filter AH60010
Our Price: $19.70
Retail: $19.99
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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter 6-Pack
(92X09)

This Lennox Healthy Climate Filter offers efficient air-filtration performance. This Lennox HEPA 60 carbon filter should be replaced every 2-5 years.


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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter
Our Price: $226.20

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Honeywell HRF-B2 Carbon PreFilter 2-Pack
(HRF-B2 1 R)

The Honeywell HRF-B2 Carbon PreFilter 2-Pack is the correct replacement for the following models of Honeywell air purifiers: HHT-090 HHT-011 HHT-145 HPA-150 HPA-050 This carbon prefilter removes mold spores, pet dander, tobacco smoke, and


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Honeywell HRF-B2 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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RPS Ceiling Fan Air Filter 6-Pack
(CF2)

The RPS Ceiling Fan Air Filter comes in this convenient, cost effective 2-pack value set.


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RPS Ceiling Fan Air Filter
Our Price: $23.94

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Carrier 356066-1202 Charcoal Filter for EACBAXCC00 2-Pack
(356066-1202)

The Carrier 356066-1202 Charcoal Filter is a genuine OEM factory replacement charcoal carbon filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0014 Electronic Air Cleaner.


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Carrier 356066-1202 Charcoal Filter for EACBAXCC00
Our Price: $127.24

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Filters Fast 5" Trane BAYFTFR21M Compatible 2-Pack
(FFC21275TRN OKGM)

The Filters Fast 5" Trane Perfect Fit BAYFTFR21M Compatible FFC21275TRN OKGM fits the following: any air cleaner that calls for a 21" x 27" x 5" filter This Filters Fast air filter also replaces the Trane Perfect Fit BAYFTFR21M filter. This Tr


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Filters Fast 5" Trane BAYFTFR21M Compatible 2-Pack
Our Price: $100.00
Retail: $104.99
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Lennox X8313 MERV 16 Expandable Filter Replacement
(X8313)

The Lennox X8313 MERV 16 Expandable Filter Replacement is the correct replacement for any furnace the needs a 20x25x5 filter. This expandable filter has a MERV rating of 16. The Lennox X8313 MERV 16 Expandable Filter Replacement specifica

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Special Order. Ships in 7 days.
Lennox X8313 MERV 16 Expandable Filter Replacement
Our Price: $109.55
Retail: $131.25
You Save 17%!

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GeneralAire G99 Ventilator Filter Gage
(4002)

The GeneralAire G99 is the correct replacement for the following Ventilators: GeneralAire Whole House Ventilato


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GeneralAire G99 Ventilator Filter Gage
Our Price: $14.62
Retail: $49.99
You Save 71%!

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Trion Air Bear Supreme 1400 Media Air Cleaner
(455602-119C)

The Trion Air Bear Supreme 1400 Media Air Cleaner, part number 455602-119C, provides a clean and controlled indoor air environment in your home by removing dirt, dust, pollen and other microscopic particles and other microscopic particles.


In Stock! Ships in 27 to 28 business days.
Trion Air Bear Supreme 1400 Media Air Cleaner
Our Price: $100.95
Retail: $120.75
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Trion Air Bear Right Angle Media Air Cleaner
(447380-010)

The Trion Air Bear Right Angle Media Air Cleaner, part number 447380-002, provides a clean and controlled indoor air environment in your home. Ideal for installations that normally require a 90 degree duct adaptor.

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In Stock! Ships in 30 to 31 business days.
Trion Air Bear Right Angle Media Air Cleaner
Our Price: $123.83
Retail: $199.99
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Lennox 92X10 40/60 HEPA Filter Replacement
(92X10)

This Lennox Charcoal Carbon Filter 92X10 is designed to capture 99.97% of particulates down to 0.3 micron that pass through it. The Lennox Healthy Climate filter should be replaced every 2-5 years.

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Lennox 92X10 40/60 HEPA Filter Replacement
Our Price: $261.99
Retail: $284.96
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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
You Save 28%!

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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,


In Stock! Ships in 16 to 17 business days.
Trion Trim T / Trim TX Air Cleaner Prefilter
Our Price: $22.99
Retail: $29.99
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GeneralAire F1021 MERV 13 16x25x4 Media Filter 10-Pack
(4572)

The General Aire F1021 MERV 13 16x25x4 Media Filter is the correct replacement filter for the GeneralAir TERSus1200, and removes airborne particles and allergens as small as 0.3 micron to improve indoor the air quality of your home dramatically.


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GeneralAire F1021 MERV 13 16x25x4 Media Filter
Our Price: $537.40

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Honeywell FC35A1001 Replacement Air Filter 16x25x5
(FC35A1001)

The Honeywell FC35A1001 is the correct replacement filter for the following air cleaners: Honeywell 16x25 F100 Media Air Cleaners Honeywell 16x25 F200 Media Air Cleaners The Honeywell FC35A1001 Replacement Air Filter 16x25x5 is a genuine Hone


In stock! Ships in 1 business day.
Honeywell FC35A1001 Replacement Air Filter 16x25x5
As Low As: $36.00
Retail: $37.00
You Save 3%!

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Honeywell F100F2044 25x20 Whole House Air Cleaner
(F100F2044)

The Honeywell F100F2044 25x20 Whole House Air Cleaner does not require electrical connections and mounts in the return air duct in any position.

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In Stock! Ships in 1 to 2 business days.
Honeywell F100F2044 25x20 Whole House Air Cleaner
Our Price: $123.69
Retail: $134.99
You Save 8%!

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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.


In Stock! Ships in 27 to 28 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 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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Special Order. Ships in 3 days.
Lennox 92X17 HEPA Filter Cartridge Replacement
Our Price: $128.25
Retail: $198.40
You Save 35%!

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