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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 full product list:


Lennox X8311 MERV 11 Expandable Filter Replacement
(X8311)

The Lennox X8311 is the correct filter for the following air cleaner: Lennox Healthy Climate HCXF14 Air Filtration System


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Lennox X8311 MERV 11 Expandable Filter Replacement
Our Price: $34.39
Retail: $38.71
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3M Filtrete Home Odor AC Filter - 20 x 25 x 1
(Filtrete-Odor-20251)

The 3M Filtrete Home Odor AC Filter - 20 x 25 x 1 features activated carbon technology along with electrostatically charged fibers to provide high performance air filtration in your home. This Filtrete air filter can remove common odors such as pet,


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3M Filtrete Home Odor AC Filter - 20 x 25 x 1
Our Price: $21.61
Retail: $29.99
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FiltersFast 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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FiltersFast A35WPR Replacement For Carrier P1103545
As Low As: $11.45
Retail: $14.99
You Save 24%!

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FAPF02 Air Filter, Replacement for FAP02-RS
(FAPF02)

The Filtrete FAPF02 Air Filter is the replacement air cleaning filter for the Filtrete Ultra Clean Air Purifier FAP02-RS, FAP02. This electrostatically charged filter attracts & retains microparticles that can aggravate allergies and ...


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FAPF02 Air Filter, Replacement for FAP02-RS
Our Price: $26.14
Retail: $29.99
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Lennox Y6605-16x26x5 MERV 16 PureAir PCO3-16-16
(Y6605)

The FiltersFast FF-Y6605 is the compatible replacement for the Lennox Y6605- PureAir PCO3-16-16.

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Lennox Y6605-16x26x5 MERV 16 PureAir PCO3-16-16
Our Price: $106.95
Retail: $109.95
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Trion Air Bear Supreme Filter 20x20x5 MERV11 4-PacK
(259112-103 4pack)

The 259112-103 is the correct filter replacement for the following Trion Air Bear and Air Bear Supreme air cleaning systems.

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Trion Air Bear Supreme Filter 20x20x5 MERV11 4-PacK
Our Price: $111.99
Retail: $189.99
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FiltersFast A35WPR Replacement For Lennox WB2-17/WB2-18
(WB2-17/WB2-18 R)

The Lennox WB2-17/WB2-18 Humidifier Water Panel Filter will help keep your humidifier running at its best. This humidifier panel measure 10" x 13 1/4" x 1.5" inches and the honeycomb design will trap mineral pollutants keeping them out of your humid


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FiltersFast A35WPR Replacement For Lennox WB2-17/WB2-18
As Low As: $11.45
Retail: $14.99
You Save 24%!

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3M Filtrete Dust & Pollen Furnace Filter 6-Pack LB
(Dust and Pollen 6-Pk)

The 3M Filtrete Dust & Pollen Furnace Filter is an electrostatically charged furnace filter ideal for high velocity HVAC systems. 3M Filtrete filters are an economical upgrade from cheap one month filters.


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3M Filtrete Dust & Pollen Furnace Filter 6-Pack LB
Our Price: $59.25
Retail: $60.11
You Save 1%!

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Trion Air Bear Cub Filter 16x25x3 MERV 11
(259112-101)

The 259112-101 is the correct filter replacement for all air cleaning sytems requiring a 16" x 25" x 3" air filter. The Trion Air Bear Cub Filter is a genuine Air Bear filter.


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Trion Air Bear Cub Filter 16x25x3 MERV 11
Our Price: $26.99

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Hamilton Humidifier Evaporator Pad EP-036
(EP-036)

The Hamilton EP-036 is the correct replacement for the following humdifier: Hamilton 10F flow through humidifier The Hamilton Humidifier Evaporator Pad EP-036 is the part of the humidifier that collects moisture and then distributes it into th


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Hamilton Humidifier Evaporator Pad EP-036
Our Price: $14.99
Retail: $19.99
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FiltersFast Trane 21x26x5 Perfect Fit BAYFTAH26M M13 x2
(FFC26215TRNM13)

If you are looking for an economical compatible version of the genuine Trane/American Standard BAYFTAH26M Perfect Fit Air Filter, try this FiltersFast Trane 21x26x5 Perfect Fit BAYFTAH26M M13 with a MERV 13 energy efficiency rating.

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FiltersFast Trane 21x26x5 Perfect Fit BAYFTAH26M M13 x2
Our Price: $111.00
Retail: $140.00
You Save 21%!

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GeneralAire HF500 HEPA Filter for AC500
(4620)

The GeneralAire HF500 HEPA Filter for AC500 is a replacement air filter for the GeneralAire Model AC500 Air Cleaner. This HEPA filter is 99.7% efficient at reducing airborne particles down to 0.30 microns. This HEPA air filter, also known as the RHF

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GeneralAire HF500 HEPA Filter for AC500
Our Price: $96.62
Retail: $149.99
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Lennox X0584 MERV 11 Pleated Media Filter
(X0584)

The Lennox X0584 MERV 10 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
As Low As: $33.95
Retail: $81.70
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Honeywell Enviracaire HC22A1007 Filter - HE220a
(HC22A 1007)

The Honeywell Enviracaire Elite HC22A 1007 Humidifier Pad replaces the humidifier pad in the Honeywell HE220A,B Bypass Flow-Through Humidifier or Aprilaire 550 Humidifier. Genuine Honeywell part.


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Honeywell Enviracaire HC22A1007 Filter - HE220a
Our Price: $12.99
Retail: $13.00
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Honeywell HFC40R1011 Return Grille Filter 20"x25"
(HFC40R1011)

The Honeywell HFC40R1011 20"x25" Return Air Grille Filter is a high efficiency replacement air filter for return grille air filtration applications. Honeywell replacement filters efficiently capture harmful airborne particles such as dust, pet dande


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Honeywell HFC40R1011 Return Grille Filter 20"x25"
Our Price: $51.99
Retail: $60.00
You Save 13%!

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FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack
(FFC20205HONM8)

FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack Air Filter is an economical compatible version of the OEM Honeywell FC100A1011 20"x20" Media AC Filter. To save money, this air filter replacement comes in a 2pk value set.


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FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack
Our Price: $44.90
Retail: $50.00
You Save 10%!

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Lennox X2660 Humidifier Water Panel Filter
(X2660)

The Lennox X2660 Humidifier Water Panel Filter is a replacement water panel filter for several Lennox Healthy Climate model humidifiers. This evaporator pad is also compatible with several humidifier models from Aprilaire. This humidifier filter rep


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Lennox X2660 Humidifier Water Panel Filter
Our Price: $14.99
Retail: $61.45
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FiltersFast Brand Bryant,Carrier FILXXFNC0021 Filter 2-Pack
(FILXXFNC0021)

FiltersFast Brand Bryant,Carrier FILXXFNC0021 Filter


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FiltersFast Brand Bryant,Carrier FILXXFNC0021 Filter 2-Pack
Our Price: $55.99
Retail: $69.99
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Aprilaire 12 Replacement Water Panel
(Aprilaire 12)

This is an Aprilaire 112 & 445 Humidifier Water Panel Evaporator for the Aprilaire 440 Humidifier, Aprilaire 445 Humidifier, Aprilaire 445A Humidifier, Aprilaire 448 Humidifier, Aprilaire 112 Humidifier, and Aprilaire 224 Humidifier. The Aprilaire w


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Aprilaire 12 Replacement Water Panel
Our Price: $20.25
Retail: $22.99
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FiltersFast A35WPR Replacement For Honeywell HC26P
(Honeywell HC26 R)

The Honeywell HC26 Humidifier Water Panel Filter is a replacement humidifier water panel filter that fits several Honeywell furnace humidifier models. This evaporator pad measures approximately 10" x 13.25" x 1.5" and features anti-microbial furna


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FiltersFast A35WPR Replacement For Honeywell HC26P
As Low As: $11.45
Retail: $14.99
You Save 24%!

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Honeywell HC-14 Replacement Humidifier Filter Wick
(HC-14)

The Honeywell HC-14 Humidifier Filter Replacement reduces waterborne minerals and contaminants to keep your humidifier clean.


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Honeywell HC-14 Replacement Humidifier Filter Wick
Our Price: $24.99
Retail: $25.99
You Save 4%!

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GeneralAire 12758 MERV 11 Filter Media Replacement
(4001)

The GeneralAire 12758 MERV 11 Filter Media Replacement is a replacement air filter for the GeneralAire AC1 and AC22 model air cleaners. This replacement filter media features a MERV 11 rating and Micro Fiber construction for the reduction of airborn


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GeneralAire 12758 MERV 11 Filter Media Replacement
Our Price: $50.99
Retail: $63.99
You Save 20%!

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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: $44.00
Retail: $46.00
You Save 4%!

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FiltersFast Brand White Rodgers 20x26x5 F825-0549 2Pack
(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 Brand White Rodgers 20x26x5 F825-0549 2Pack
Our Price: $41.99
Retail: $50.00
You Save 16%!

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FiltersFast Brand Honeywell 20x20x5 FC100A1011 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 Brand Honeywell 20x20x5 FC100A1011 2-Pack
Our Price: $80.99
Retail: $90.00
You Save 10%!

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