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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 D11-C Replacement for Honeywell HC-811 Humidifier Filter
(Honeywell HC-811 R)

The BestAir D11-C Replacement for Honeywell HC-811 Humidifier Filter will remove minerals and pollutants from the water, preventing them from being released into your homes air.


In stock! Ships in 1 business day.
BestAir D11-C Replacement for Honeywell HC-811 Humidifier Filter
Our Price: $9.99
Retail: $12.99
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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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In Stock! Ships in 3 to 4 business days.
Lennox X8344 PureAir PCO-20C MERV 16 Upgrade Kit
Our Price: $249.95
Retail: $299.99
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Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
(X8314)

The Lennox X8314 is the correct replacement for the following air cleaner: Lennox PMAC-20C Healthy Climate Air Cleaner

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In Stock! Ships in 2 to 3 business days.
Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
Our Price: $89.95
Retail: $114.99
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Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
(356066-0601)

The Carrier 356066-0601 Pre Filter - 2 Pack is a genuine OEM factory replacement pre filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0020 Electronic Air Cleaner.


Special Order. Ships in 17 days.
Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
Our Price: $59.95
Retail: $71.99
You Save 17%!

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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.


In stock! Ships in 1 business day.
BestAir A10WPR Replacement for Lennox WB2-12 Humidifier Filter
Our Price: $16.99
Retail: $19.99
You Save 15%!

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BestAir HM2PR Replacement for Trion Herrmidifier 1220
(7098 11 R)

The BestAir HM2PR Humidifier Filter replaces the filter in your Herrmidifier models 465-C1 and 465-1.


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BestAir HM2PR Replacement for Trion Herrmidifier 1220
As Low As: $12.99
Retail: $19.99
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FiltersFast Replacement for Trane BAYFTFR14M2 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 1 to 2 business days.
FiltersFast Replacement for Trane BAYFTFR14M2 Air Filter - 2-Pack
Our Price: $52.95
Retail: $59.99
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Honeywell TRN1727T1 Replacement for Trane BAYFTFR17M, 17.5x27x5 Perfect Fit - 3-Pack
(TRN1727T1)

These three Honeywell TRN1727T1 Replacement for Trane BAYFTFR17M, 17.5x27x5 Perfect Fit - 3-Pack Honeywell air filters are compatible furnace filters that can be used as upgrades over the Trane Perfect Fit filter of the same size.

Free shipping within the continental United States!

Out of stock
Honeywell TRN1727T1 Replacement for Trane BAYFTFR17M, 17.5x27x5 Perfect Fit - 3-Pack
Our Price: $149.95
Retail: $169.99
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Hunter 30962 QuietFlo HEPA Purifier Filter
(30962)

The Hunter 30962 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


Special Order. Ships in 10 days.
Hunter 30962 QuietFlo HEPA Purifier Filter
Our Price: $59.99
Retail: $69.99
You Save 14%!

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BestAir R14ALLM Replacement For Kenmore 83120 2-Pack
(83120)

The Kenmore 83120 Carbon PreFilter 2-Pack is the correct replacement for: several models of Kenmore air purifiers. This carbon prefilter has a shipping weight of 3 lbs. This Kenmore prefilter 2-pack comes with 2 filters in each pack.


In stock! Ships in 1 business day.
BestAir R14ALLM Replacement For Kenmore 83120 2-Pack
Our Price: $19.95
Retail: $24.99
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Honeywell FC100A1003 Replacement for Honeywell FC35A1035 - 16x20x5
(FC35A1035)

The Honeywell FC35A1035 is a replacement air cleaner filter that is the correct compatible replacement for the following air filter: Honeywell FC100A1003 The Honeywell FC35A1035 Furnace/ AC Air Filter 16x20x5 fits Honeywell 16 inch x 20 inch


In stock! Ships in 1 business day.
Honeywell FC100A1003 Replacement for Honeywell FC35A1035 - 16x20x5
As Low As: $38.99
Retail: $49.99
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3M Filtrete 300 MPR Basic Dust & Lint Air Filter 6-Pack
(Filtrete 300)

The Filtrete 300 Dust Reduction Filter is a replacement non-electrostatic pleated filter that attracts and captures household dust


In stock! Ships in 1 business day.
3M Filtrete 300 MPR Basic Dust & Lint Air Filter
Our Price: $71.70

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GeneralAire F1020 MERV 13 Filter Media Replacement
(4562)

The General Air F1020 MERV 13 Filter Media measures 20"x25"x4", and is correct filter for General Aire TERSus2000 Air Purification Systems.


Special Order. Ships in 18 days.
GeneralAire F1020 MERV 13 Filter Media Replacement
Our Price: $79.95
Retail: $85.99
You Save 7%!

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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
(40120101)

This Hoover Power-Drive WindTunnel Vacuum Final Filter is a replacement vacuum final filter for Hoover Self-Propelled WindTunnel Upright vacuums with the Hoover Allergen Filtration System.


In stock! Ships in 1 business day.
Hoover PowerDrive WindTunnel HEPA Vacuum Filter
Our Price: $12.95
Retail: $19.99
You Save 35%!

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FiltersFast H64-C Replacement for Honeywell HC-24
(Honeywell HC-24)

The FiltersFast H64-C Replacement for Honeywell HC-24 is a compatible of the Honeywell HC-24 Humidifier Wick Filter Replacement for humidifiers.


In stock! Ships in 1 business day.
FiltersFast H64-C Replacement for Honeywell HC-24
Our Price: $12.95
Retail: $14.99
You Save 14%!

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FiltersFast 23500 Replacement for Honeywell 23500
(23500)

The Honeywell 23500 Replacement HEPA Filter fits Honeywell Enviracaire Air Purifiers models 13530, 13531, 13532, 13533 (300i), 50200, 50201, and 52000 and Sears Kenmore models 83165 and 83331.


In stock! Ships in 1 business day.
FiltersFast 23500 Replacement for Honeywell 23500
Our Price: $69.95
Retail: $79.99
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Lennox 92X08 HEPA 40/60 Foam PreFilter Genuine Lennox Part
(92X08)

The Lennox 92X08 HEPA 40/60 Foam PreFilter is a replacement foam pre-filter for the HEPA 40 and HEPA 60 Lennox Healthy Climate Indoor Air Quality HEPA systems. Contaminated air passes through this carbon pre-filter, allowing it trap large dirt.


Out of stock
Lennox 92X08 HEPA 40/60 Foam PreFilter Genuine Lennox Part
Our Price: $79.95
Retail: $89.99
You Save 11%!

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AirCare 1050 Evaporative Humidifier Air Filter 6-Pack 6-Pack
(1050)

The Essick Air 1050 Tabletop Air Humidifier Filter is a two-stage air cleaning filter that fits several Bemis by Essick Air air purifier models. This tabletop air cleaner filter removes dust, pollen, smoke, and odors from your air and utilizes


Special Order. Ships in 11 days.
AirCare 1050 Evaporative Humidifier Air Filter 6-Pack
Our Price: $59.94

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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.


In stock! Ships in 1 business day.
GeneralAire 4366 Replacement for GeneralAire 4352 - GA100A29
Our Price: $39.99
Retail: $44.99
You Save 11%!

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GeneralAire 100328 Ventilator Filter Replacement
(4663)

The GeneralAire filter pads are for use on your GeneralAire Venitlator. This ventilator filter media will keep your unit running at its best. The 100328 filter media is a genuine OEM part from the manufacturer.


Special Order. Ships in 17 days.
GeneralAire 100328 Ventilator Filter Replacement
Our Price: $49.99
Retail: $54.99
You Save 9%!

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Honeywell FC200E1003 MERV 13 Media Filter-16x20x5
(FC200E1003)

The Honeywell FC200E1003 Media Filter fits all Honeywell 16x20 Air Cleaners including the F200E Enviracaire Elite Series and others. Genuine Honeywell Part.


In Stock! Ships in 60 to 61 business days.
Honeywell FC200E1003 MERV 13 Media Filter-16x20x5
As Low As: $63.45
Retail: $79.99
You Save 21%!

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FiltersFast FFC145275TRN Replacement for Trane BAYFTFR14M2 14.5x27x5 2-pack
(FFC145275TRN)

The Trane BAYFTFR14M2 2 Pack 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.


In Stock! Ships in 1 to 2 business days.
FiltersFast FFC145275TRN Replacement for Trane BAYFTFR14M2 14.5x27x5 2-pack
Our Price: $64.99
Retail: $85.99
You Save 24%!

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Aprilaire 4510 Replacement Air Filter - 1700, 1710A
(4510)

The Aprilaire 4510 is the correct replacement for the following dehumidifier: Aprilaire 1700 Dehumidifier


In stock! Ships in 1 business day.
Aprilaire 4510 Replacement Air Filter - 1700, 1710A
Our Price: $38.95
Retail: $44.99
You Save 13%!

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Lennox 94X98 HEPA 20 Filter System Carbon Canister
(94X98)

The Lennox 94X98 HEPA 20 Filter System Carbon Canister is a replacement carbon canister for the Lennox HEPA 20 whole house air cleaner, which is designed to be attached to the ductwork of a home or office.

Free shipping within the continental United States!

In Stock! Ships in 12 to 13 business days.
Lennox 94X98 HEPA 20 Filter System Carbon Canister
Our Price: $106.95
Retail: $140.99
You Save 24%!

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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.


In Stock! Ships in 1 to 2 business days.
Totaline P102-1625 16x25 MERV 11 Filter
Our Price: $39.95
Retail: $49.99
You Save 20%!

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