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Find Replacement Air Filters Fast & Easy!

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 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 7 to 8 business days.
Honeywell FC40R1185 Return Air Grille Filter 18x18
Our Price: $242.50

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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
Our Price: $35.00
Retail: $37.00
You Save 5%!

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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.


Special Order. Ships in 19 days.
Duracraft ACA-1010 Air Cleaner Filter Replacement
Our Price: $19.99
Retail: $24.39
You Save 18%!

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Lennox 69H98 Air Cleaner Carbon Filter
(69H98)

The Lennox 69H98 Air Cleaner Carbon Filter is a replacement air filter for the Lennox EAC12-14 and EAC-14 series air cleaners. This carbon filter replaces part number 69H9801 and is a genuine Lennox part that is constructed from high quality materia


Special Order. Ships in 29 days.
Lennox 69H98 Air Cleaner Carbon Filter
Our Price: $74.99
Retail: $79.99
You Save 6%!

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Kenmore 83120 Carbon PreFilter 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.


In stock! Ships in 1 business day.
Kenmore 83120 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Kenmore PF155 Carbon PreFilter 2-Pack
(KENMORE PF155 1 R)

The Kenmore PF155 Carbon PreFilter 2-Pack is a replacement pack of carbon pre-filters that is compatible with the Honeywell 51000 model air purifier and several other models from Kenmore. This carbon filter measures approximately 34 3/4" x 7" x 1/16


In stock! Ships in 1 business day.
Kenmore PF155 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Lennox X8314 MERV 16 Expandable Filter Replacement
(X8314)

The Lennox X8314 is the correct replacement for the following air cleaner: Lennox PMAC-20C Healthy Climate Air Cleaner

Free shipping within the continental United States!

Special Order. Ships in 12 days.
Lennox X8314 MERV 16 Expandable Filter Replacement
Our Price: $109.20
Retail: $114.99
You Save 5%!

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Hunter 30940 QuietFlo HEPA Purifier Filter
(30940)

The Hunter 30940 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


Discontinued Product Read Description.
Hunter 30940 QuietFlo HEPA Purifier Filter
Our Price: $78.99
Retail: $82.94
You Save 5%!

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Bemis 1104 Carbon PreFilter 2-Pack
(Bemis 1104 1 R)

The Bemis 1104 is the correct replacement for the following air purifier: Bemis True HEPA Air Purification System 127-001.


In stock! Ships in 1 business day.
Bemis 1104 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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GeneralAire FP12020X5 MERV 8 AC Filter Media
(4528)

The GeneralAire FP12020X5 MERV 8 AC Filter Media fits all furnaces or air conditioners that require the following size filter: 20" x 20" x 5" This GeneralAire FP12020x5 filter media is rated MERV 8. The GeneralAire FP12020X5 MERV 8 AC Filte


Special Order. Ships in 9 days.
GeneralAire FP12020X5 MERV 8 AC Filter Media
Our Price: $19.99
Retail: $29.99
You Save 33%!

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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 22 days.
Trion Trim T / Trim TX Air Cleaner Prefilter
Our Price: $20.99
Retail: $29.99
You Save 30%!

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Awair Glow Plug-In Air Quality Sensor
(AWAIR GLOW)

Take control of the air you breath inside your home with the Bitfinder Awair Glow Plug-In Air Quality Sensor.


In stock! Ships in 1 business day.
Awair Glow Plug-In Air Quality Sensor
Our Price: $109.00
Retail: $155.00
You Save 30%!

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Honeywell FC40R1177 Return Grille Filter - 24x30 5-Pack
(FC40R1177)

The Honeywell FC40R1177 Return Grille Filter - 24x30 is a cartridge-style air filter that mounts in most return filter grilles. The Honeywell return air grille filter is constructed 4 inches thick for a higher efficiency than 1 inch filters. This Ho


Discontinued Product Read Description.
Honeywell FC40R1177 Return Grille Filter - 24x30
Our Price: $199.75

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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

Free shipping within the continental United States!

Special Order. Ships in 6 days.
Lennox X8346 MERV 16 Filter Upgrade Kit
Our Price: $188.19
Retail: $215.00
You Save 12%!

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Honeywell FC40R1060 16x25 Return Air Grille Filter 5-Pack
(FC40R1060)

Honeywell FC40R1060 16x25 Return Air Grille AC Filter is a high efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x25x4.


In stock! Ships in 1 business day.
Honeywell FC40R1060 16x25 Return Air Grille Filter
Our Price: $210.00

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Hunter 30936 QuietFlo HEPA Purifier Filter 3-Pack
(30936)

The Hunter 30936 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


Special Order. Ships in 8 days.
Hunter 30936 QuietFlo HEPA Purifier Filter 3-Pack
Our Price: $247.92
Retail: $299.97
You Save 17%!

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Trion Air Bear 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.

Free shipping within the continental United States!

In Stock! Ships in 10 to 11 business days.
Trion Air Bear Right Angle Air Cleaner Merv 11
Our Price: $129.99
Retail: $149.99
You Save 13%!

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GE WB02X10700 Compatible Oven Range Hood Filter
(OEMRHP0808)

This is an Oven Hood Range Filter (OEMRHP0808) made by American Metal Filter Company which is a compatible replacement range vent hood filter for the GE WB02X10700 range filter. This oven range hood filter is a combination filter composed of carbon


In Stock! Ships in 14 to 15 business days.
GE WB02X10700 Compatible Oven Range Hood Filter
Our Price: $8.99
Retail: $9.99
You Save 10%!

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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.


Special Order. Ships in 37 days.
Trion Air Bear Supreme 1400 Media Air Cleaner
Our Price: $76.15
Retail: $120.75
You Save 37%!

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GeneralAire 401-13156 MERV 11 Filter Media
(4051)

The GeneralAire Merv 11 ventilator filter replacement is designed for use in GeneralAire Air Cleaners. This part is often called a GeneralAire 401-13156. A suitable AC24 filter replacement, this Merv 11 replacement filter is expandable.


Out of stock
GeneralAire 401-13156 MERV 11 Filter Media
Our Price: $50.85
Retail: $69.99
You Save 27%!

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Lennox X0582 MERV 10 Air Cleaner Media Filter 5-Pack
(X0582)

The Lennox X0582 MERV 10 Air Cleaner Media Filter is a furnace filter media that contains a MERV 10 air filter. This MERV 10 furnace filter is also known as the Lennox X0582 and measures 16x20x5 inches.


Special Order. Ships in 41 days.
Lennox X0582 MERV 10 Air Cleaner Media Filter
Our Price: $135.00

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Honeywell F100F2002 16x25 Whole House Air Cleaner
(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!

In Stock! Ships in 10 to 11 business days.
Honeywell F100F2002 16x25 Whole House Air Cleaner
Our Price: $113.59
Retail: $114.99
You Save 1%!

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Kaz Premium Carbon PreFilter 2-Pack
(KAZ PREMIUM 1 R)

The Kaz Premium Carbon PreFilter 2-Pack is a replacement pack of pre-filters for the Kaza HEPAClean and HEPA Compact Tower model air purifiers. This two pack of carbon filters helps your HEPA filter reach maximum efficiency and reduces unwanted odor


In stock! Ships in 1 business day.
Kaz Premium Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Kenmore 83237 Carbon PreFilter 2-Pack
(KENMORE 83237 1 R)

The Kenmore 83237 is the correct replacement for the following air cleaners: Kenmore Air Cleaners


In stock! Ships in 1 business day.
Kenmore 83237 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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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.

Free shipping within the continental United States!

Special Order. Ships in 5 days.
Lennox 94X98 HEPA 20 Filter System Carbon Canister
Our Price: $99.86
Retail: $141.00
You Save 29%!

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Filters Fast - Air Filters

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