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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:


BestAir A10WPR Replacement for Aprilaire 550 Humidifier Water Panel
(A10WPR)

The BestAir A10WPR fits Aprilaire, Chippewa, Hamilton, Honeywell, Lasko, Totaline, Healthy Climate and Lennox Humidifier systems.


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BestAir A10WPR Replacement for Aprilaire 550 Humidifier Water Panel
Our Price: $15.99
Retail: $19.99
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Lennox Y6606 PCO3-14-16 Air Filtration Filter PureAir 100908-12
(Y6606)

The Lennox Y6606 PCO3-14-16 PureAir 100908-12 Healthy Climate PureAir Air Purification System features a Precision Pleat MERV 16 filter that traps particles down to an amazing 0.01 micron.

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Lennox Y6606 PCO3-14-16 Air Filtration Filter PureAir 100908-12
Our Price: $90.95
Retail: $99.99
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Honeywell FC40R1169 14x30 Return Grille Air Filter
(FC40R1169)

The Honeywell FC40R1169 14x30 Return Grille Air Filter is a replacement air filter that fits most return filter grilles. This return air filter grille measures 14" x 30" and features a MERV 10 rating for the reduction of airborne contaminants. The H


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Honeywell FC40R1169 14x30 Return Grille Air Filter
Our Price: $34.95
Retail: $39.99
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BestAir A35WPR Replacement For Carrier P1103545
(Carrier P1103545 R)

The Carrier P1103545 Humidifier Water Panel Filter is the correct compatible replacement for: Several models of Carrier furnace humidifiers This humidifier water panel filter measures approximately 10" x 13 1/4" x 1 1/2". This Carrier water pa


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BestAir A35WPR Replacement For Carrier P1103545
As Low As: $11.45
Retail: $14.99
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Lennox X0584 MERV 11 Pleated Media Filter BMAC-14CE
(X0584)

The Lennox X0584 MERV 11 Pleated Media Filter is a pleated air filter that replaces the filter media in the Lennox BMAC-14CE box media air cleaner and also fits inside Lennox the EAC012 and EAC0-14 model air cleaner cabinets in place of its electron


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Lennox X0584 MERV 11 Pleated Media Filter BMAC-14CE
As Low As: $32.95
Retail: $81.70
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FiltersFast FFC20205HONM13 Replacement for Honeywell FC100A1011, 20x20x5 2-Pack
(FFC20205HONM13)

The FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack is a compatible version of the genuine Honeywell FC100A1011 20"x20" Media AC Filter. This filter replacement is also known as part number FFC20205HONM13.


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FiltersFast FFC20205HONM13 Replacement for Honeywell FC100A1011, 20x20x5 2-Pack
Our Price: $80.99
Retail: $90.00
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FiltersFast FFC16253TABM13 Replacement for Trion 16x25x3 Air Bear MERV13 3-Pack
(FFC16253TABM13)

The FiltersFast Brand Trion 16x25x3 Air Bear MERV13 3-Pack Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 16x25x3, 255649-101.


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FiltersFast FFC16253TABM13 Replacement for Trion 16x25x3 Air Bear MERV13 3-Pack
Our Price: $84.00
Retail: $100.00
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FiltersFast 1" Air Filters MERV 11 Replacement for Aerostar 1" MERV 11 6-Pack
(FFM11 6pk AS)

The FiltersFast 1" MERV 11 Pleated Air Filters 6-Pack is the compatible replacement for the Aerostar 1" MERV 11 Pleated Air Filters.


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FiltersFast 1" Air Filters MERV 11 Replacement for Aerostar 1" MERV 11 6-Pack
Our Price: $55.50
Retail: $77.94
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FiltersFast A10PR R Replacement for Honeywell HC22
(Honeywell HC22 R)

The Honeywell HC22 Humidifier Water Panel Filter is a replacement humidifier water panel filter that is compatible with several Honeywell furnace humidifier models. This evaporator pad measures approximately 9.5" x 10" x 1.5" and traps mineral pollu


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FiltersFast A10PR R Replacement for Honeywell HC22
As Low As: $6.99
Retail: $10.99
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BestAir A35PR Replacement for Lennox WB2-17 and WB2-18 Filter
(WB2-17 WB2-18)

The BestAir A35PR is the compatible replacement filter for the Lennox WB2-17 and WB2-18 Humidifier Metal Water Panel Filter.


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BestAir A35PR Replacement for Lennox WB2-17 and WB2-18 Filter
As Low As: $7.95
Retail: $9.99
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FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack
(FFM8PLEAT1)

The FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack is a set of replacement air filters for ideal use as service pleats or prefilters in commercial HVAC systems or industrial air cleaners. These pleated media filters arrive in a 6 pack and are ef


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FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack
Our Price: $39.95
Retail: $49.95
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Lennox 75X66 Genuine Metal Mesh Insert Fits PureAir Model PCO-2OC
(75X66)

The Lennox 75X66 Metal Mesh Filter is the correct replacement for the following air cleaner: Lennox Pureair PCO-2OC

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Lennox 75X66 Genuine Metal Mesh Insert Fits PureAir Model PCO-2OC
Our Price: $99.95
Retail: $199.99
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Honeywell FC40R1060 16x25 Return Air Grille Filter
(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.


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Honeywell FC40R1060 16x25 Return Air Grille Filter
Our Price: $34.99
Retail: $49.99
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Honeywell FC40R1045 14x25 Return Air Grille Filter
(FC40R1045)

Honeywell FC40R1045 14x25 Return Air Grille AC Filter is a high efficiency, replacement for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 14x25x4. Genuine Honeywell Part.


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Honeywell FC40R1045 14x25 Return Air Grille Filter
Our Price: $29.99
Retail: $44.99
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FiltersFast FFC20265WRM8 Replacement for White Rodgers 20x26x5 F825-0549 2-Pack
(FFC20265WRM8)

The FiltersFast Brand 20x26x5 Air Filter F825-0549 is a compatible alternative for the OEM White Rodgers 20x26x5 Air Filter. This filter is made of fine carbon powder bonded to lofted polyester media for odor reduction.


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FiltersFast FFC20265WRM8 Replacement for White Rodgers 20x26x5 F825-0549 2-Pack
Our Price: $41.99
Retail: $50.00
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Lennox X5425 MERV 16 Pleated Furnace Filter Media
(X5425)

This Lennox X5425 MERV 16 Pleated Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store. This pleated filter is a genuine MERV 16 filter.

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Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $91.95
Retail: $122.10
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Honeywell 50000293-001 Post Air Filter 2-Pack 2-Pack
(50000293-001)

The Honeywell 50000293-001 is a post filter that fits the following electronic air cleaner models: Honeywell F50F Honeywell F300E The Honeywell 50000293-001 Post Air Filter - 16x10 improves the performance and efficiency of the air cleaner.


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Honeywell 50000293-001 Post Air Filter 2-Pack
Our Price: $43.90

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FiltersFast FFC16255TABM13 Replacement for Trion 16x25x5 Air Bear MERV13 - 2-Pack
(FFC16255TABM13)

The FiltersFast Brand Trion 16x25x5 Air Bear MERV13 2-Pack Furnace Filter is the compatible version of the genuine Trion Air Bear Media AC Filter 16x25x5, 255649-105.

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FiltersFast FFC16255TABM13 Replacement for Trion 16x25x5 Air Bear MERV13 - 2-Pack
Our Price: $94.00
Retail: $100.00
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Honeywell HAC-700 Humidifier Filter B 2-Pack
(HAC-700)

This Honeywell HAC-700 humidifier filter eliminates minerals and pollutants from water and helps keep your humidifier clean and pure. This Honeywell humidifier filter has a ProTec AntiMicrobial Treatment, which helps to prevent bacteria.


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Honeywell HAC-700 Humidifier Filter B 2-Pack
As Low As: $14.55
Retail: $19.95
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FilterFast FFC215215TRNM13 Replacement for Trane BAYFTAH21M, 21.5x21x5 Perfect Fit - MERV13, 2-Pack
(FFC215215TRNM13)

The FilterFast Brand Trane 21.5x21x5 Perfect Fit Filter BAYFTAH21M, FLR06072, BAYFTAH21M2 is a compatible economical alternative for the genuine Trane 21.5x21x5 Perfect Fit Filter that comes in a 2-pack value set.


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FilterFast FFC215215TRNM13 Replacement for Trane BAYFTAH21M, 21.5x21x5 Perfect Fit - MERV13, 2-Pack
Our Price: $69.95
Retail: $140.00
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FiltersFast A10PR R Replacement for Bryant P1101045
(Bryant P1101045 R)

The Bryant P1101045 Humidifier Water Panel Filter is a replacement evaporator pad for the Bryant HUMBBSBP2212-A and HUMBBSBP2272-A humidifier models. This humidifier filter measures approximately 9.5" x 9.75" and utilizes honeycomb filtration to tra


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FiltersFast A10PR R Replacement for Bryant P1101045
As Low As: $6.99
Retail: $10.99
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FiltersFast A10PR R Replacement for American Standard BAYPAD01A1010A
(BAYPAD01A1010A R)

The American Standard BAYPAD01A1010A is the compatible replacement for the following humidifier: American Standard HUMD200A Humidifier American Standard HUMD200T Humidifier


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FiltersFast A10PR R Replacement for American Standard BAYPAD01A1010A
As Low As: $6.99
Retail: $10.99
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Lennox X4138 HEPA 40-60 Carbon PreFilter
(X4138)

This Lennox X4138 HEPA 40-60 Carbon PreFilter is a part of the Lennox “Healthy Climate” line of indoor air quality products. This Lennox HEPA 60 filter has an estimated life of 6 months.


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Lennox X4138 HEPA 40-60 Carbon PreFilter
Our Price: $31.95
Retail: $38.51
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Aprilaire 4897 Conversion Frame for Model 5000
(4897)

The Aprilaire 4897 Conversion Frame upgrades your Honeywell, Trion, Carrier, General, or Lennox brand media style air cleaner filters to use Aprilaire replacements.


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Aprilaire 4897 Conversion Frame for Model 5000
Our Price: $7.95
Retail: $19.99
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BioStrike CFF Ceiling Fan Air Filter - 93880
(BioStrike CFF)

The BioStrike Ceiling Fan Air Filter (BioStrike CFF) can be used with most ceiling fans to reduce dust, dirt, hair, pollen, pet dander, mold, and other airborne allergens. It attaches to the ceiling fan blade(s) to provide air filtration every time


Special Order. Ships in 33 days.
BioStrike CFF Ceiling Fan Air Filter - 93880
Our Price: $11.49
Retail: $14.99
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Filters Fast - Air Filters

" I just received my filters - thank you for the excellent work that you guys do! I'm a very happy customer. " - Mike, San Marcos, TX
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