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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.


Air Filters full product list:


BestAir 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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BestAir A35WPR Replacement For Lennox WB2-17 WB2-18
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Retail: $14.99
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FiltersFast A10PR R Replacement for Lennox WB2-1
(Lennox WB2-12 R)

The FiltersFast A10PR R Humidifier Water Panel Filter is the correct replacement for the Lennox WB2-1 and the following filters:


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FiltersFast A10PR R Replacement for Lennox WB2-1
As Low As: $6.99
Retail: $19.99
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FiltersFast FFC16253TAB Replacement for Trion 255649-101 3-Pack
(FFC16253TAB)

Replace your Trion Air Bear 255649-101 16x25x3 air filter with this FiltersFast compatible AC filter, which features a MERV 11 rating, an upgrade from the MERV 8 Trion Air Bear.


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FiltersFast FFC16253TAB Replacement for Trion 255649-101 3-Pack
Our Price: $66.00

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GeneralAire 4365 Replacement for GeneralAire 4350 MERV 10 Filter
(4350)

The GeneralAire GA100A03 16x20 MERV10 Filter Media is used on Honeywell F25 Series, F35 Series, F100 Series & F150 Series Media Style Air Cleaners, as well as Honeywell FC100A1003, F100F1004, F100B1008, F100F2028, and F150E1000 Air Cleaners.


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GeneralAire 4365 Replacement for GeneralAire 4350 MERV 10 Filter
Our Price: $34.99

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GeneralAire 4366 Replacement for GeneralAire 4352 - GA100A29
(4352)

The General Aire GA100A29 16x25 MERV10 Filter Media is the correct replacement filter for Honeywell F100 Series and Honeywell F150 Series Media Style Air Cleaners. These filters remove airborne particles to 1.0 micron to provide healthier indoor air.


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GeneralAire 4366 Replacement for GeneralAire 4352 - GA100A29
Our Price: $37.99
Retail: $39.99
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Universal Carbon Range Hood Filter - Trim to Fit
(RYM1518C)

This Universal Carbon Oven Range Hood Filter (RYM1518C) is a trim to fit oven range oven carbon filter for use with many over the range oven hoods (ducted and non-ducted), microwave ovens, and other similar applications requiring odor elimination. I


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Universal Carbon Range Hood Filter - Trim to Fit
Our Price: $20.99
Retail: $24.99
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Hunter 30936 QuietFlo HEPA Purifier Filter
(30936)

The Hunter 30936 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns.


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Hunter 30936 QuietFlo HEPA Purifier Filter
Our Price: $58.95
Retail: $299.97
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Totaline P102-1625 16x25 MERV 11 Filter
(P102-1625)

The Totaline P102-1625 16x25 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


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Totaline P102-1625 16x25 MERV 11 Filter
Our Price: $33.95
Retail: $44.99
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FiltersFast FFC24265TRNM13 Replacement for Trane BAYFTFR24M, 24x26x5 Perfect Fit - 2-Pack
(FFC24265TRNM13)

FiltersFast Brand Trane 24x26x5 Perfect Fit BAYFTFR24M

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FiltersFast FFC24265TRNM13 Replacement for Trane BAYFTFR24M, 24x26x5 Perfect Fit - 2-Pack
Our Price: $80.95
Retail: $140.00
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BestAir R14ALLM Replacement For Honeywell 35200 2-Pack
(Honeywell 35200 1 R)

The Honeywell 35200 is the correct replacement for the following air purifiers: Honeywell HEPA Air Purifier Cleaners


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BestAir R14ALLM Replacement For Honeywell 35200 2-Pack
Our Price: $17.99
Retail: $19.99
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FiltersFast FFC16265WR Replacement for White Rodgers F825-0548 16x26x5 2-Pack
(FFC16265WR)

The FiltersFast Compatible 16x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0548. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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FiltersFast FFC16265WR Replacement for White Rodgers F825-0548 16x26x5 2-Pack
Our Price: $45.95
Retail: $55.25
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Hunter 30931 HEPAtech Purifier Filter
(30931)

The Hunter 30931 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns.


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Hunter 30931 HEPAtech Purifier Filter
Our Price: $40.75
Retail: $49.99
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FiltersFast 1" MERV 11 Replacement For Honeywell 14x14x1 MERV 11 6-Pack
(50049536-003)

The Honeywell 14x14x1 MERV 11 Air Filter- TruDRY DR90 is a replacement filter for the Honeywell TrueDry DR90 Dehumidification System. This Honeywell air filter measures 14" x 14" x 1" and has a MERV 11 rating for the reduction of airborne contaminan


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FiltersFast 1" MERV 11 Replacement For Honeywell 14x14x1 MERV 11 6-Pack
Our Price: $53.50

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FiltersFast 1" Air Filters MERV 8 Replacement for Rheem FPR 4 6-Pack
(FFM8 6pk RH)

The FiltersFast FFM8 6-Pack is the compatible replacement for the Rheem Basic Household Pleated Air Filter.


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FiltersFast 1" Air Filters MERV 8 Replacement for Rheem FPR 4 6-Pack
Our Price: $43.95
Retail: $49.99
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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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In Stock! Ships in 7 to 8 business days.
Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $91.95
Retail: $122.10
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GeneralAire HMK500 Filter Replacement Kit 2-Pack 2-Pack
(4610)

The GeneralAire HMK500 is the correct replacement for the following air cleaner: GeneralAire AC500 Whole House HEPA Filtration System.


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GeneralAire HMK500 Filter Replacement Kit 2-Pack
Our Price: $83.98

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Carrier 324897-761 Humidifier Water Filter Pad
(Carrier 324897-761)

The Carrier 324897-761 Humidifier Water Filter Pad is a replacement humidifier water filter pad for several models of humidifiers from Carrier, Bryant, Totaline, and Day and Night. This Carrier wick filter utilizes honeycomb filtration to trap miner


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Carrier 324897-761 Humidifier Water Filter Pad
Our Price: $24.95
Retail: $29.95
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FiltersFast ROHAPF96M Replacement for Holmes HAPF96
(ROHAPF96M)

The Holmes HAPF96 is a holmes air filter for your Holmes air purifier. This carbon prefilter helps to remove large particles and odors in your homes air. This air purifier pre filter also protects your air purifiers HEPA filter.


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FiltersFast ROHAPF96M Replacement for Holmes HAPF96
Our Price: $9.00
Retail: $14.99
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Lennox X8344 PureAir PCO-20C MERV 16 Upgrade Kit
(X8344)

The Lennox X8344 MERV 16 Filter Upgrade Kit is an upgrade kit for the Lennox PCO-20C Healthy Climate PureAir Air Purification System. This Lennox PureAir filter kit includes one MERV 16 filter, also known by part number X6669, and six UV bulbs.

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Lennox X8344 PureAir PCO-20C MERV 16 Upgrade Kit
Our Price: $219.95
Retail: $299.99
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FiltersFast 1" Air Filters MERV 11 Replacement for Nordic Pure MERV 10 6-Pack
(FFM11 6pk ND)

The FiltersFast FFM11 6-Pack is the compatible replacement for the Nordic Pure 1" MERV 10 Air Filters.


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FiltersFast 1" Air Filters MERV 11 Replacement for Nordic Pure MERV 10 6-Pack
Our Price: $55.50
Retail: $77.94
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BestAir R14ALLM Replacement For Kenmore 83156 2-Pack
(KENMORE 83156 1 R)

The Kenmore 83156 Carbon PreFilter 2 Pack works with your Kenmore 83250 and 85250 model Air Purifier. These replacement carbon prefilters measure approximately 14.5" x 11" inches and will protect your HEPA filter while removing harmful particles and


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BestAir R14ALLM Replacement For Kenmore 83156 2-Pack
Our Price: $17.99
Retail: $19.99
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FiltersFast HAPF30 R Replacement for Holmes HAPF30D
(HAPF30D)

The Holmes HAPF30D compatible single Replacement HEPA Filter removes up to 99% of airborne dust and pollen, in addition to reducing pet dander, smoke and mold spores.


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FiltersFast HAPF30 R Replacement for Holmes HAPF30D
Our Price: $16.24
Retail: $29.99
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Lennox X8349 Maintenance Kit for PCO-12C Air Cleaner
(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 Maintenance Kit for PCO-12C Air Cleaner
Our Price: $185.95
Retail: $225.25
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FiltersFast FFC16205HONM13 Replacement for Honeywell FC100A1003
(FFC16205HONM13)

The FiltersFast FFC16205HONM13 compatible air filter replaces the Honeywell FC100A1003 and effectively reduces indoor air contaminants using a deep pleated filter media.


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FiltersFast FFC16205HONM13 Replacement for Honeywell FC100A1003
Our Price: $57.95
Retail: $64.95
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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 15 to 16 business days.
Honeywell FC40R1136 18x24 Return Grille Air Filter
Our Price: $165.90

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