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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:


12488101 Refrigerator Air Filter
(12488101)

The 12488101 Refrigerator Air Filter fits some newer Amana models.


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12488101 Refrigerator Air Filter
Our Price: $12.99
Retail: $14.99
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FiltersFast FFC145275TRNM8 Replacement for Trane BAYFTFR14M2 14.5x27x5 Air Filter 2-Pack
(FFC145275TRNM8)

The Trane BAYFTFR14M2 Air Filter is a replacement furnace air filter that fits the TFM145BOFRO Perfect Fit High Efficiency Air Cleaner. This Trane filter is MERV 8 rated to reduce airborne particulates and improve indoor air quality.


In Stock! Ships in 3 to 4 business days.
FiltersFast FFC145275TRNM8 Replacement for Trane BAYFTFR14M2 14.5x27x5 Air Filter
Our Price: $57.00

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BestAir HM2PR Replacement for Honeywell 32000146-001
(7098 13 R)

The BestAir HM2PR Humidifier Filter replaces the filter of the Honeywell HE120A and Honeywell HE120B humidifier models.


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BestAir HM2PR Replacement for Honeywell 32000146-001
Our Price: $8.01
Retail: $9.99
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Holmes HAPF41 Air Purifier Carbon Prefilter 2-Pack
(ROHAPF41M)

The Holmes HAPF41 Air Purifier Carbon PreFilter-2 Pack is a replacement pack of carbon pre-filters for the Holmes HAP-300 and Holmes HAP-3004 air purifiers. This two pack of carbon filters protects the HEPA filter of your Holmes air cleaner and prev


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Holmes HAPF41 Air Purifier Carbon Prefilter
Our Price: $17.96

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BestAir A10WPR Replacement for Lennox WB2-12 Humidifier Filter
(Lennox WB2-12 1R)

The BestAir A10WPR Humidifier Paper Water Panel Filter has approximate dimensions of 9 1/2 x 10 x 1 1/2 and fits the Lennox WB2-12 model of humidifier.


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BestAir A10WPR Replacement for Lennox WB2-12 Humidifier Filter
Our Price: $15.99
Retail: $19.99
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FiltersFast FFC145275TRN Replacement for Trane BAYFTFR14M2 14.5x27x5 2-pack
(FFC145275TRN)

The Trane BAYFTFR14M2 Air Filter is a replacement furnace air filter that fits the TFM145BOFRO Perfect Fit High Efficiency Air Cleaner. This Trane filter is MERV 11 rated to reduce airborne particulates and improve indoor air quality.


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FiltersFast FFC145275TRN Replacement for Trane BAYFTFR14M2 14.5x27x5 2-pack
Our Price: $55.99
Retail: $59.99
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BestAir R14ALLM Replacement For Kenmore 83157 2-Pack
(KENMORE 83157 1 R)

The Kenmore 83157 Carbon PreFilter 2-Pack is the correct replacement for: several Kenmore air cleaner models This carbon prefilter is a cut to fit sheet that measures 15 3/4" x 48". This Kenmore prefilter removes large particles and common hou


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BestAir R14ALLM Replacement For Kenmore 83157 2-Pack
Our Price: $17.99
Retail: $19.99
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BestAir D19-C Replacement for Honeywell HC-818 Humidifier Filter
(Honeywell HC-818 R)

The BestAir D19-C Humidifier Wick Filter works with your Honeywell Cool Moisture Humidifier and features an antimicrobial agent for extra protection.


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BestAir D19-C Replacement for Honeywell HC-818 Humidifier Filter
Our Price: $10.45
Retail: $16.99
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Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter
(X8313)

The Lennox X8313 Healthy Climate HCXF20-16 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.

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Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter
Our Price: $89.95
Retail: $131.25
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American Metal Filter Replacement For GE WB02X10776
(OEMRCP0410)

This is a Replacement Microwave Filter (OEMRCP0410) made by American Metal Filter Company which is a compatible microwave filter replacement primarily for the GE WB02X10776 filter. This microwave filter is a combination filter composed of


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American Metal Filter Replacement For GE WB02X10776
Our Price: $12.99
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FiltersFast A10PR R Replacement for Totaline P110-0007
(Totaline P110-0007 R)

The FiltersFast A10PR R is the correct replacement for the Totaline P110-0007 and for the following humidifier models:


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FiltersFast A10PR R Replacement for Totaline P110-0007
As Low As: $6.99
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Trion Air Bear AB-51625-8 Supreme 1400 Comp Air Filters 2-Pack
(AB-51625-8)

The Trion AB-51625-8 replaces the following Trion Air Bear air filters: Air Bear 1400 - 255649-103 Air Bear 1400 - 229990-103 Air Bear 2000 - 255649-102


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Trion Air Bear AB-51625-8 Supreme 1400 Comp Air Filters
Our Price: $63.90

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Lennox X6661 HCC20-28 Healthy Climate HC16 Cabinet
(X6661)

The Lennox X6661 HCC20-28 Healthy Climate HC16 Cabinet is a replacement filter cabinet for Lennox Healthy Climate air cleaner models HC10 and HC 16. This air filter cabinet measures approximately 20x25x5 and is also known as the HCC20-28.

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In Stock! Ships in 2 to 3 business days.
Lennox X6661 HCC20-28 Healthy Climate HC16 Cabinet
Our Price: $89.95
Retail: $120.95
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Electrolux EAF1CB Replacement for Frigidaire 241575002
(241575002)

The Frigidaire 241575002 Replacement Air Filter fits Icon and Pure Advantage refrigerator models manufactured by Electrolux and Frigidaire. This refrigerator air filter, also known as the Frigidaire EAF1CB, uses a combination of activated carbon, ze


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Electrolux EAF1CB Replacement for Frigidaire 241575002
Our Price: $12.99
Retail: $14.99
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GeneralAire F1018, 4571 MERV 11 16x25x4 Media Filter
(4571)

The General Aire F1018 MERV 11 16x25x4 Media Filter is the correct filter replacement for the General Air TERSus 1200, and removes airborne allergens and particles down to 0.3 microns to improve indoor air quality of your home dramatically.


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GeneralAire F1018, 4571 MERV 11 16x25x4 Media Filter
Our Price: $51.99
Retail: $59.99
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GeneralAire F1021, 4572 MERV 13 16x25x4 Media Filter
(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, 4572 MERV 13 16x25x4 Media Filter
Our Price: $53.74
Retail: $59.99
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Honeywell 32000146-001 Humidifier Pad for HE120
(32000146-001)

The Honeywell 32000146-001 is the Replacement Humidifier Pad for HE120. Comes complete with clips. Also known as 32000146-001/U. Geniune Honeywell Replacement Part.


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Honeywell 32000146-001 Humidifier Pad for HE120
Our Price: $21.99
Retail: $29.00
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Honeywell TRN2121T1 Replacement for Trane BAYFTAH21M, 21.5x21x5 Perfect Fit - 3-Pack
(TRN2121T1)

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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In Stock! Ships in 8 to 9 business days.
Honeywell TRN2121T1 Replacement for Trane BAYFTAH21M, 21.5x21x5 Perfect Fit - 3-Pack
Our Price: $149.00
Retail: $150.00
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FiltersFast FFC16265WRMM13 Replacement for White Rodgers F825-0548, 16x26x5 - 2-Pack
(FFC16265WRMM13)

The FiltersFast Brand White Rodgers 16x26x5 F825-0548 2Pack is a compatible economical alternative to the genuine 16x26x5 air furnace filter.


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FiltersFast FFC16265WRMM13 Replacement for White Rodgers F825-0548, 16x26x5 - 2-Pack
Our Price: $71.00
Retail: $90.00
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Aprilaire 4270 Pleat Spacers for 2400/5000 6-Pack
(Aprilaire 4270)

The Aprilaire 4270 Pleat Spacers for 2400/5000 fit the Aprilaire 2400 and Aprilaire 5000 air cleaner models. This pleat spacer is shaped like a comb and supports filter media for even support of particulates throughout the filter. With these genuine


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Aprilaire 4270 Pleat Spacers for 2400/5000
Our Price: $85.98

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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: $149.95
Retail: $198.40
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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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Duracraft 5010 Replacement for Honeywell 10590 HEPA Filter
(Honeywell 10590 R)

The Honeywell 10590 HEPA Filter Replacement is a replacement air filter for use with several Honeywell and Duracraft air cleaner models. This HEPA filter measures approximately 10 7/8" OD x 6 1/4" ID x 4" H and removes up to 99.97% of airborne parti


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Duracraft 5010 Replacement for Honeywell 10590 HEPA Filter
Our Price: $30.99
Retail: $59.99
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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 2-Pack
(BAYFTFR24M2A)

The Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 fits the TFM245B0FR0 Perfect Fit High Efficiency Air Cleaner and easily slides in for quick use. This Trane Perfect Fit filter measures approximately 24.5" x 27" x 5" and has a MERV 8 rating for


Special Order. Ships in 11 days.
Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5
Our Price: $103.46

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Honeywell FC100A1029 Replacement for Honeywell FC35A1001 - 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


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Honeywell FC100A1029 Replacement for Honeywell FC35A1001 - 16x25x5
As Low As: $36.00
Retail: $37.00
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