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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.


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Air Filters full product list:


Goodman GDMHEPA400 Whole House HEPA Air Purifier
(GDMHEPA400)

The Goodman GDMHEPA400 Whole House HEPA Air Purifier is a high-efficiency air purifier is a True HEPA air cleaner that is engineered to improve the quality of indoor air.

Free shipping within the continental United States!

Special Order. Ships in 10 days.
Goodman GDMHEPA400 Whole House HEPA Air Purifier
Our Price: $340.99
Retail: $399.99
You Save 15%!

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GeneralAire F1021 MERV 13 16x25x4 Media Filter 10-Pack
(4572)

The General Aire F1021 MERV 13 16x25x4 Media Filter is the correct replacement filter for the GeneralAir TERSus1200, and removes airborne particles and allergens as small as 0.3 micron to improve indoor the air quality of your home dramatically.


Special Order. Ships in 4 days.
GeneralAire F1021 MERV 13 16x25x4 Media Filter
Our Price: $537.40

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General Aire 3-Position Switch -Gray- H9-0220
(4717)

The General Aire 3-Position Switch -Gray- H9-0220 fits the following air cleaners: GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This GeneralAire part 4717 is the air cleaner's 3-position switch and


Special Order. Ships in 7 days.
General Aire 3-Position Switch -Gray- H9-0220
Our Price: $51.99
Retail: $59.99
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General Aire 3-Position Switch -Black- H9-0219
(4718)

The GeneralAir H9-0219 Black, 3-Position Switch is a replacement part attached to the power control board & transformer assembly on General Aire SSCB7-X and SSCB15-X Electronic Air Cleaner systems.


Special Order. Ships in 7 days.
General Aire 3-Position Switch -Black- H9-0219
Our Price: $51.99
Retail: $59.99
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General Aire Fibreboard C5-0526
(4719)

GeneralAire C5-0526 Fiberboard is an internal part attached to the power control board and transformer assembly on GeneralAir SSCB15-X and SSCB7-X Air Cleaner systems.


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General Aire Fibreboard C5-0526
Our Price: $41.99
Retail: $49.99
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General Aire 24V Transformer C5-074D
(4723)

The GeneralAire 4723 fits the following models of air cleaners: GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R The General Aire 24V Transformer C5-074D is one of the air cleaner's electronic parts. T


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General Aire 24V Transformer C5-074D
Our Price: $41.99
Retail: $49.99
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Trion 4008 Humidifier Filter Pad Replacement
(Trion 4008)

The Trion 4008 Humidifier Filter Pad Replacement is a replacement filter pad for the Herrmidifier Model 4000 and 4000C Humidifiers. This Trion humidifier filter measures approximately 15.5 inches x 11.25 inches x 1.25 inches. This Trion humidifier p


Special Order. Ships in 10 days.
Trion 4008 Humidifier Filter Pad Replacement
Our Price: $31.99
Retail: $39.99
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Hamilton Humidifier Evaporator Pad EP-037 14-Pack
(EP-037)

The Hamilton EP-037 is the correct replacement for the following model of humidifier: Hamilton 12HF The Hamilton Humidifier Evaporator Pad EP-037 collects moisture in the humidifier, converting it into humidity in your indoor air. This humidif

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Hamilton Humidifier Evaporator Pad EP-037 14-Pack
Our Price: $252.86
Retail: $419.86
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Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 4-Pack
(BAYFTAH26P4A)

The Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 is a furnace air filter that fits several electronic and media air cleaner models from Trane. This Trane air filter boasts a MERV 8 rating for the reduction of particulates in your air, including


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Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1
Our Price: $215.20

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Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 12-Pack 12-Pack
(FC2400A1005)

The Honeywell FC2400A1005 is a compatible AC filter for the Aprilaire and Space Gard 2400 (filter model 401) and is also used in Research Products cabinet models 2200, 2250 and 2400. This filter boasts a MERV 10 rating.


Special Order. Ships in 5 days.
Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 12-Pack
Our Price: $561.60

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Hunter 30925 HEPAtech Purifier Filter 6-Pack
(30925)

The Hunter 30925 HEPAtech v Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


Special Order. Ships in 8 days.
Hunter 30925 HEPAtech Purifier Filter
Our Price: $150.00

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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.


Special Order. Ships in 4 days.
Hunter 30936 QuietFlo HEPA Purifier Filter
Our Price: $58.95
Retail: $299.97
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Hunter 30938 QuietFlo HEPA Purifier Filter 3-Pack
(30938)

The Hunter 30938 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


Special Order. Ships in 3 days.
Hunter 30938 QuietFlo HEPA Purifier Filter
Our Price: $188.58

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Hunter 30960 QuietFlo HEPA Purifier Filter 3-Pack
(30960)

The Hunter 30960 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


Special Order. Ships in 8 days.
Hunter 30960 QuietFlo HEPA Purifier Filter
Our Price: $210.75

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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 3 days.
Hunter 30962 QuietFlo HEPA Purifier Filter
Our Price: $73.99
Retail: $85.00
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Aprilaire EZ Kleen Filter Replacement 2-Pack 2-Pack
(5153)

The Aprilaire 5153 fits the following model ventilator: 8100 Energy Recovery Ventilator Aprilaire EZ Kleen Filter Replacement 2-Pack is a washable replacement filter.


Special Order. Ships in 10 days.
Aprilaire EZ Kleen Filter Replacement 2-Pack
Our Price: $43.00

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Holmes HAPF91 Purifier Carbon PreFilter 25 2-Pack
(ROHAPF91M)

This Holmes HAPF91 carbon odor filter, a Genuine OEM Holmes Filter, can trap up to 4,000 odors and impurities from your home. The Holmes carbon filter comes 2 per pack.


Special Order. Ships in 1 days.
Holmes HAPF91 Purifier Carbon PreFilter 25
Our Price: $167.00

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Holmes HAPF41 Air Purifier Carbon Prefilter 2-Pack
(ROHAPF41M)

The Holmes HAPF41 Air Purifier Carbon PreFilter-2 Pack is a replacement pack of carbon pre-filters for the Holmes HAP-300 and Holmes HAP-3004 air purifiers. This two pack of carbon filters protects the HEPA filter of your Holmes air cleaner and prev


Special Order. Ships in 30 days.
Holmes HAPF41 Air Purifier Carbon Prefilter
Our Price: $17.96

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3M Filtrete OAC250 Replacement Air Cleaner Filter 6-Pack
(OAC250RF)

The 3M Filtrete OAC250 Replacement Air Cleaner Filter is used in the 3M Filtrete OAC250 Office Air Cleaner Purifier. This filter replacement is also known as part number OAC250RF.


Special Order. Ships in 15 days.
3M Filtrete OAC250 Replacement Air Cleaner Filter
Our Price: $305.94

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Carrier 356066-1201 Charcoal Filter EACBAXCC0020 2-Pack
(356066-1201)

The Carrier 356066-1201 Charcoal Filter is a genuine OEM factory replacement charcoal carbon filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0020 Electronic Air Cleaner.


Special Order. Ships in 7 days.
Carrier 356066-1201 Charcoal Filter EACBAXCC0020
Our Price: $96.96

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Spacegard Aprilaire 2600 Filter Media Replacement 10-Pack
(Aprilaire 261)

This genuine Spacegard Aprilaire 2600 Filter Media Replacement, also known as the Aprilaire 261 Filter, is the replacement filter used in the Spacegard Aprilaire 2600 Air Cleaner. The Aprilaire 261 Air Filter / Aprilaire 2600 Replacement Filter is a


Special Order. Ships in 7 days.
Spacegard Aprilaire 2600 Filter Media Replacement
Our Price: $639.90

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Honeywell HDC-200 Humidifier Filters 2-Pack
(HDC-200)

The Honeywell HDC-200 Humidifier Filter is a genuine Honeywell Demineralization Cartridge. This humidifier filter replacement comes in a package of 2 filter cartridges.

Free shipping within the continental United States!

Special Order. Ships in 14 days.
Honeywell HDC-200 Humidifier Filters
Our Price: $17.98

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BestAir Ceiling Fan Air Filter 6-Pack
(CF2)

The BestAir Ceiling Fan Air Filter comes in this convenient, cost effective 2-pack value set.


Special Order. Ships in 7 days.
BestAir Ceiling Fan Air Filter
Our Price: $23.94

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Water Sentinel AF-1 Refrigerator Air Filter 12-Pack
(102565)

Keep the inside of your refrigerator and freezer smelling great with the Water Sentinel AF-1 Refrigerator Air Filter.


Special Order. Ships in 10 days.
Water Sentinel AF-1 Refrigerator Air Filter
Our Price: $167.40

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3M Filtrete OAC50RF Filter Replacement
(OAC50RF)

3M Filtrete OAC50 Replacement Air Cleaner Filter is the replacement filter for the OAC50 Office Air Cleaner for cubicles. This air cleaner filter is also known as replacement filter OAC50RF.


Discontinued Product Read Description.
3M Filtrete OAC50RF Filter Replacement
Our Price: $81.43
Retail: $89.99
You Save 10%!

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Filters Fast - Air Filters

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