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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 A10WPR Replacement for Lennox WB2-12 Humidifier Filter
(Lennox WB2-12)

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: $16.99
Retail: $19.99
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FiltersFast FFC20265WRM13 Replacement for White Rodgers F825-0549 - MERV13
(FFC20265WRM13)

The FiltersFast Brand White Rodgers F825-0549 MERV13 2Pack is a compatible alternative that's a part of the White Rodgers F825 Series residential air cleaner replacement filters.

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FiltersFast FFC20265WRM13 Replacement for White Rodgers F825-0549 - MERV13
Our Price: $81.00
Retail: $99.99
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BestAir A10WPR Replacement for Carrier P110-0007 Filter
(Carrier P110-0007 1R)

The Carrier P110-0007 paper water panel filter measures 9-7/16" x 10-1/16" x 1-5/8" (approx.), and is the correct filter for many humidifiers models by BDP, AprilAire, Bryant, Lennox, Autoflo, Healthy Climate, Hamilton, Carrier, Lasko and Totaline.


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BestAir A10WPR Replacement for Carrier P110-0007 Filter
Our Price: $16.99
Retail: $19.99
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BestAir R14ALLM Replacement For Bemis 1104 2-Pack
(Bemis 1104)

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


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BestAir R14ALLM Replacement For Bemis 1104 2-Pack
Our Price: $19.95
Retail: $24.99
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Free Flow 93524 Room Air Conditioner Filter, 1777 - 15" x 24"
(93524)

This Free Flow Room Air Conditioner Filter (1777) is a universal 15" x 24" cut to fit black foam room air conditioner filter. It filters dirt, dust, soot, pollen, and other allergens.


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Free Flow 93524 Room Air Conditioner Filter, 1777 - 15" x 24"
Our Price: $11.99
Retail: $15.99
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Honeywell 50000293-003 Post Air Filter - 10x20 2 pack
(50000293-003)

The Honeywell 50000293-003 Post Air Filter - 10x20 2 pack is a post filter that fits the following electronic air cleaner models: Honeywell F50F, Honeywell F58F, Honeywell F300.


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Honeywell 50000293-003 Post Air Filter - 10x20 2 pack
Our Price: $74.99
Retail: $99.99
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BestAir R14ALLM Replacement For Kenmore 83125 2-Pack
(KENMORE 83125)

The Kenmore 83125 Carbon PreFilter 2-Pack is cut-to-fit activated. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


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BestAir R14ALLM Replacement For Kenmore 83125 2-Pack
Our Price: $19.95
Retail: $24.99
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Filtrete One Inch Odor Air Filter - 20 x 30 x 1 4-Pack
(Filtrete-Odor-20301)

The Filtrete One Inch Odor Air Filter - 20 x 30 x 1 is constructed with activated carbon to remove common odors from your home, including pet, smoke, cooking, mildew, and cleaning chemicals. In addition to creating a more breathable atmosphere, this


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Filtrete One Inch Odor Air Filter - 20 x 30 x 1
Our Price: $90.44

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Lennox 98N44 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N44)

This Lennox 98N44 MERV 8 Pleated Furnace Filters 4-Pack package is pleated filters that capture airborne particles and allergens between three to ten microns in size. The Lennox 98N44 MERV 8 filters come in this cost-cutting 4-pack package.


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Lennox 98N44 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $43.99

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Lennox Y2921, HCC16-28 Filter Cabinet System MERV 16
(Y2921)

The Lennox HCC16-28 Filter Cabinet System MERV 16 is an air cleaner cabinet that attaches directly to your HVAC system without causing any additional energy costs. The Lennox Healthy Climate HCC16-28 is ideal for whole-house air filtration. The Lenn

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This item has been discontinued. Please review the product description for more information.
Lennox Y2921, HCC16-28 Filter Cabinet System MERV 16
Our Price: $302.99
Retail: $355.99
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Honeywell F300E1035 20x25 Electronic Air Cleaner
(F300E1035)

The Honeywell F300E1035 20x25 Electronic Air Cleaner operates with all gas, oil and electric forced warm air furnaces and air conditioning systems.

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Honeywell F300E1035 20x25 Electronic Air Cleaner
Our Price: $642.99
Retail: $755.99
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Lennox 69H85 Whole House Air Purifier Filter 6-Pack
(69H85)

The Lennox 69H85 Whole House Air Purifier Filter is a replacement air filter for the EAC12-14 and EAC-14 Healthy Climate Electronic Air Cleaner from Lennox. This washable pre-filter traps large pollutants, like dust and dirt particles, and helps you


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Lennox 69H85 Whole House Air Purifier Filter
Our Price: $77.10

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BestAir R14ALLM Replacement For Kenmore 83134 2-Pack
(KENMORE 83134 1)

The Kenmore 83134 Carbon PreFilter comes in this money-saving 2-pack package. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


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BestAir R14ALLM Replacement For Kenmore 83134 2-Pack
Our Price: $19.95
Retail: $24.99
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Honeywell TRN2427T1 Replacement for Trane BAYFTFR24M, 24x27x5 Perfect Fit Filter - 3-Pack
(TRN2427T1)

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 66 to 67 business days.
Honeywell TRN2427T1 Replacement for Trane BAYFTFR24M, 24x27x5 Perfect Fit Filter - 3-Pack
Our Price: $151.00
Retail: $179.99
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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: $59.99
Retail: $69.99
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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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Lennox X6661 HCC20-28 Healthy Climate HC16 Cabinet
Our Price: $99.95
Retail: $120.99
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Lennox X8307 MERV 16 Expandable Filter Kit
(X8307)

The Lennox X8307 MERV 16 Expandable Filter Kit is the correct replacement for several models of the following brands of air cleaners: Bryant & Carrier Honeywell Lennox Trion This Lennox Healthy Climate filter kit contains one filter and one

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Lennox X8307 MERV 16 Expandable Filter Kit
Our Price: $138.00
Retail: $169.99
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BestAir R14ALLM Replacement For Shop-Vac 8017062 2-Pack
(SHOP-VAC 8017062)

The Shop-Vac 8017062 Carbon PreFilter 2-Pack is a replacement two pack of carbon pre-filters for the Shop-Vac 1030000 air cleaner model. These carbon filters reduce airborne contaminants down to 5 microns and allows you to reduce dust and dirt from


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BestAir R14ALLM Replacement For Shop-Vac 8017062 2-Pack
Our Price: $19.95
Retail: $24.99
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Lennox 91X25 MERV 8 Pleated Air Filters 4-Pack
(91X25)

The Lennox 91X25 MERV 8 Pleated Air Filters 4-Pack is a replacement set of pleated air filters that arrives in a 4 pack. These Healthy Climate furnace filters boast a MERV 8 rating, which can reduce mold spores, dust, and tiny particles from your ai


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Lennox 91X25 MERV 8 Pleated Air Filters
Our Price: $39.96

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Carrier 318501-761 Humidifier Water Filter Pad
(Carrier 318501-761)

The Carrier 318501-761 Humidifier Water Filter Pad helps your humidifier generate the humidity needed during the heating season.


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Carrier 318501-761 Humidifier Water Filter Pad
Our Price: $29.95
Retail: $34.99
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BestAir A10WPR Replacement for Carrier HUMBBSBP2312-A
(C HUMBBSBP2312-A 1R)

The BestAir A10WPR Paper Water Panel Filter has approximate dimensions of 9 1/2 x 10 x 1 1/2, and is the correct compatible replacement for the Carrier HUMBBSBP2312-A and Carrier HUMCCSBP2312-A models of humidifiers.


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BestAir A10WPR Replacement for Carrier HUMBBSBP2312-A
Our Price: $16.99
Retail: $19.99
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Honeywell FC40R1052 16x20 Return Air Grille Filter 5-Pack
(FC40R1052)

The Honeywell FC40R1052 is a high-efficiency, replacement AC filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x20x4. Genuine Honeywell Part.


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Honeywell FC40R1052 16x20 Return Air Grille Filter
Our Price: $264.95

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Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
(455601-001C)

The Trion Duct Mount HE Plus 1400, 455601-001C is an Electronic Whole House Air Purification System. The HE Plus 1400 includes an elctronic air flow sensor. Genuine Trion Fedders product. Learn how the HE Plus 1400 can help you live a healthy life..

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In Stock! Ships in 38 to 39 business days.
Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
Our Price: $449.95
Retail: $517.95
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BestAir R14ALLM Replacement For Duracraft D530 2-Pack
(Duracraft D530)

The Duracraft D530 is the correct replacement for the following air purifiers: Duracraft HEPA 260 Air Purifier Duracraft DA-5030 Air Purifier


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BestAir R14ALLM Replacement For Duracraft D530 2-Pack
Our Price: $19.95
Retail: $24.99
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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: $30.99
Retail: $44.99
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Filters Fast - Air Filters

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