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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 product list


GeneralAire 101790 Enthalpy Core for ERV3220
(4674)

The GeneralAire 101790 is the correct replacement for the following ventilator: GeneralAire Whole House ERV3220 Ventilator.

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GeneralAire 101790 Enthalpy Core for ERV3220
Our Price: $611.99
Retail: $640.49
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Lennox X8308 MERV 16 Expandable Filter Kit
(X8308)

This Lennox Expandable Filter is a genuine Lennox part. The Lennox Healthy Climate Filter is a viable replacement for several Air Cleaner Models.

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Lennox X8308 MERV 16 Expandable Filter Kit
Our Price: $131.99
Retail: $149.99
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Lennox X7751 HCC20-28 Replacement Filter Cabinet
(X7751)

The Lennox X7751 replacement Healthy Climate Cabinet is used in air conditioning systems to provide whole house filtration. The metal construction provides durability for year round home comfort with little maintenance. The unit is not powered for r

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Lennox X7751 HCC20-28 Replacement Filter Cabinet
Our Price: $301.95
Retail: $349.99
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Lennox X8346 MERV 16 Filter Upgrade Kit
(X8346)

The Lennox X8346 MERV 16 Filter Upgrade Kit is the correct upgrade for the following whole-house purification system: Lennox PureAir PCO 12C This Lennox upgrade kit contains 4 PureAir UV-A lamps, and 1 PureAir MERV 16 filter. This upgrade kit

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Lennox X8346 MERV 16 Filter Upgrade Kit
Our Price: $190.19
Retail: $215.00
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General Aire White Cover Assembly C5-0608
(4708)

The General Aire White Cover Assembly C5-0608 fits the following models of air cleaners: GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This GeneralAire part 4708 is the air cleaner's cover assembly and is white in color. The GeneralAire white

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General Aire White Cover Assembly C5-0608
Our Price: $664.13
Retail: $695.24
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General Aire Gray Cover Assembly C5-0609
(4709)

The General Aire Gray Cover Assembly C5-0609 fits the following models of air cleaners: GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This General Aire part 4709 is the air cleaner's cover assembly, and is gray in color. The GeneralAire cover

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General Aire Gray Cover Assembly C5-0609
Our Price: $664.13
Retail: $695.24
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General Aire Power Compartment Cover G8-0610
(4789)

The General Aire Power Compartment Cover G8-0610 fits the following model of air cleaner: GeneralAire GA52F32 This GeneralAire part 4789 is the air cleaner's power compartment cover. The GeneralAire power comprartment cover G8-0610 is also kno

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General Aire Power Compartment Cover G8-0610
Our Price: $272.10
Retail: $299.99
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General Aire Contact Tray G8-0522
(4792)

The General Aire G8-0522 Contact Tray is the correct replacement part which attaches to the inside lower base section of the main General Air GA52F32 unit. Also known as General Air part number 4792.


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General Aire Contact Tray G8-0522
Our Price: $51.99
Retail: $59.99
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General Aire Air Cleaner Fan Motor C5-070D
(4704)

The General Aire Air Cleaner Fan Motor C5-070D is a replacement fan motor for the GeneralAire SSCB15 Ceiling Mount Air Cleaners. The GeneralAire C5-070D fan motor attaches to the C5-0710 fan blade and ensures the proper filtration of airborne partic

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General Aire Air Cleaner Fan Motor C5-070D
Our Price: $401.99
Retail: $499.99
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GeneralAire Air Cleaner Cell C5-0400
(4712)

The General Aire Air Cleaner Cell C5-0400 fits the following models of air cleaners: GeneralAire GA52F32 GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This GeneralAire part number 4712 is the air c

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GeneralAire Air Cleaner Cell C5-0400
Our Price: $301.99
Retail: $399.99
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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
(1000-3000-0101)

The Trion 1000-3000-0101 Replacement Air Filter 2-Pack is a replacement air filter for the Trion CAC500 and CAC500 air cleaners. This CAC500M filter features pleated media to trap contaminants and improve overall indoor air quality. This Trion filte

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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
Our Price: $217.67
Retail: $299.99
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FiltersFast 5" Trane Compatible Air Filter 2-Pack
(FFC175275TRN OKGM)

The FiltersFast 5" Trane Compatible FFC175275TRN OKGM is a compatible replacement air filter that replaces the Trane BAYFTFR17M and Trane FLR06069 air filters, both of which can be used in several models of Trane Air Cleaners. This 5" filter boasts


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FiltersFast 5" Trane Compatible Air Filter 2-Pack
Our Price: $70.99
Retail: $104.99
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Bionaire Foam Humidifier Prefilter A0327W 2-Pack
(A0327W)

The Bionaire A0327W Foam Humidifier Prefilter is used to reduce airborne particles & pollutants with Bionaire CP0305 & CP0306 humidifier systems.


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Bionaire Foam Humidifier Prefilter A0327W
Our Price: $9.98

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Hoover Air Purifier HEPA & Pre-filter AH60010
(AH60010)

The Hoover AH60010 is the correct replacement for the following models of air purifiers: Hoover WH10100 Hoover WH10200 The Hoover Air Purifier HEPA & Pre-filter AH60010 contains a rinsable pre-filter and a HEPA media filter. The pre-filter of


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Hoover Air Purifier HEPA & Pre-filter AH60010
Our Price: $19.70
Retail: $19.99
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Honeywell Comfort System Kit YTHX9421R5069
(YTHX9421R5069)

The Honeywell PRESTIGE IAQ 2.0 Comfort System Kit YTHX9421R5069 is a high definition touch screen thermostat for your home. This Honeywell comfort system thermostat can control up to 4 heat/2 cool heat pumps or 3 heat/2 cool conventional systems. Fo

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Honeywell Comfort System Kit YTHX9421R5069
Our Price: $319.99
Retail: $349.99
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FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack 6-Pack
(FFM8PLEAT1)

The FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack is a set of replacement air filters for ideal use as service pleats or prefilters in commercial HVAC systems or industrial air cleaners. These pleated media filters arrive in a 6 pack and are ef


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FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack
Our Price: $239.70

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Austin Air HM405 Allergy Machine - Sandstone
(HM405 Sandstone)

The Austin Air HM405 Allergy Machine - Sandstone is an air purifier ideal for allergy and asthma sufferers. This Austin Air air purifier promotes better sleep and less coughing & sneezing through the reduction of smoke, mold, mildew, fungi, allergen

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Austin Air HM405 Allergy Machine - Sandstone
Our Price: $634.99

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Austin Air HM405 Allergy Machine - Black
(HM405 Black)

The Austin Air HM405 Allergy Machine - Black is an air cleaner that provides clean air for allergy and asthma sufferers. This Austin Air purifier offers users better sleep and less coughing & sneezing through the reduction of smoke, mold, mildew, fu

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Austin Air HM405 Allergy Machine - Black
Our Price: $634.99

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Austin Air HM405 Allergy Machine - White
(HM405 White)

The Austin Air HM405 Allergy Machine - White is an air cleaner that provides clean air for allergy and asthma sufferers. This Austin Air purifier offers users better sleep and less coughing & sneezing through the reduction of smoke, mold, mildew, fu

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Austin Air HM405 Allergy Machine - White
Our Price: $634.99

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Austin Air HM405 Allergy Machine - Midnight Blue
(HM405 MB)

The Austin Air HM405 Allergy Machine - Midnight Blue is an air cleaner that provides clean air for allergy and asthma sufferers. This Austin Air purifier offers users better sleep and less coughing & sneezing through the reduction of smoke, mold, mi

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In Stock! Ships in 2 to 3 business days.
Austin Air HM405 Allergy Machine - Midnight Blue
Our Price: $634.99

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Lennox 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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In Stock! Ships in 8 to 9 business days.
Lennox HCC16-28 Filter Cabinet System MERV 16
Our Price: $301.99
Retail: $349.99
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Lennox Y0629 - PCO20-28 Installation Kit
(Y0629)

The Lennox Y0629 is for use with the following air purification system: Lennox Healthy Climate PureAir PCO20-28 The Lennox Y0629 - PCO20-28 Pureair Filter System is the installation kit for the PCO20-28. This Lennox PureAir kit is made from qu

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In Stock! Ships in 10 to 11 business days.
Lennox Y0629 - PCO20-28 Installation Kit
Our Price: $101.99
Retail: $149.99
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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


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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Skuttle Air Cleaner Filter 16x20x5 000-0448-004 3-Pack
(000-0448-004)

The Skuttle 000-0448-004 Air Cleaner Filter can be used on air cleaners requiring 16"x20"x5" filters. The Skuttle 448-4 dramatically removes airborne particulates such as pollen, mold spores, dust, dust mites and allergens from your indoor air.


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Skuttle Air Cleaner Filter 16x20x5 000-0448-004
Our Price: $96.00

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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.


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GeneralAire F1021 MERV 13 16x25x4 Media Filter
Our Price: $537.40

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Filters Fast - Air Filters

" Thank you for your expert service when helping me get the proper filters for my old pool and filter system. The new ones are perfect and work very well. All the best! " - Jim, Alamo, CA
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