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Find Replacement Air Filters Fast & Easy!

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.


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Air Filters product list


Lennox 72H03 Air Cleaner Filter Cell
(72H03)

This Lennox 72H03 Air Cleaner Filter Cell is a high quality filter cell that provides effective air filtration. The Lennox 72H03 Air Cleaner Filter Cell is a Genuine Lennox replacement filter for central air cleaners.

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Lennox 72H03 Air Cleaner Filter Cell
Our Price: $328.40
Retail: $349.99
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Lennox X8344 MERV 16 Filter 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 MERV 16 Filter Upgrade Kit
Our Price: $273.27
Retail: $299.99
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GeneralAire DC4E Elite Dehumidistat Control
(4685)

The GeneralAire DC4E is the correct replacement for the following ventilators: GeneralAire Heat Recovery Ventilators and GeneralAire Energy Recovery Ventilators.

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GeneralAire DC4E Elite Dehumidistat Control
Our Price: $200.69
Retail: $249.99
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Lennox Y2920 Whole House Air Filter Cabinet
(Y2920)

The Lennox Y2920 Whole House Air Filter Cabinet is the correct system that is: Compatible with any HVAC system and does not require an additional power source


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Lennox Y2920 Whole House Air Filter Cabinet
Our Price: $91.75
Retail: $119.00
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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. These ventilator filter pads will comp


Special Order. Ships in 12 days.
GeneralAire 100328 Ventilator Filter Replacement
Our Price: $39.99
Retail: $49.99
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Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack
(98N46)

This Lennox 98N46 MERV 8 Pleated Furnace Filters 4-Pack serves as an excellent choice to upgrade from the generic fiberglass filters in your local hardware store. The healthy climate filters come in this money-saving 4-pack package.


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Lennox 98N46 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $29.96
Retail: $39.96
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Lennox X8306 MERV 16 Expandable Filter Kit
(X8306)

The Lennox X8306 expandable filter is a MERV 16 furnace filter for your home. This Lennox healthy climate filter measures 16x25x5 inches.

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Lennox X8306 MERV 16 Expandable Filter Kit
Our Price: $140.00
Retail: $169.99
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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: $135.00
Retail: $169.99
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Lennox X8303 MERV 10 Expandable Filter Kit
(X8303)

The Lennox X8303 MERV 10 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


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Lennox X8303 MERV 10 Expandable Filter Kit
Our Price: $47.50
Retail: $49.99
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Lennox X8304 MERV 10 Expandable Filter Kit
(X8304)

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 X8304 MERV 10 Expandable Filter Kit
Our Price: $99.99
Retail: $104.99
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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: $299.95
Retail: $349.99
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General Aire Air Cleaner Prefilter G8-0885
(4783)

The General Aire Air Cleaner Prefilter G8-0885 is a replacement air filter for the GeneralAire GA52F32 Grill Mount Air Cleaner. The G8-0885 prefilter captures large airborne particles within your home and sends the smaller particles to the main air


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General Aire Air Cleaner Prefilter G8-0885
Our Price: $29.99
Retail: $39.99
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General Aire Air Cleaner On/Off Switch C5-0223
(4787)

The General Aire Air Cleaner On/Off Switch C5-0223 fits the following model of air cleaner: GeneralAire GA52F32 This GeneralAire air cleaner switch is the air cleaner's on/off switch. The GeneralAire air cleaner on/off switch C5-0223 is also k


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General Aire Air Cleaner On/Off Switch C5-0223
Our Price: $29.99
Retail: $39.99
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General Aire Important Label EACGM-19
(GeneralAire 4793)

The General Aire Important Label EACGM-19 is a replacement Important Label for the GeneralAire Model GA52F32 Grill Mount Air Cleaner. The GeneralAire EACGM-19 Important Label is an optional component of your GA52F32 air cleaner and is an OEM replace


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General Aire Important Label EACGM-19
Our Price: $13.97
Retail: $19.99
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Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 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.


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Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 12-Pack
Our Price: $537.60
Retail: $588.24
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Crane Humidifier Cleaner and Descaler - 8 Ounces 6-Pack
(HS-1933)

This 8 ounce bottle of Crane Humidifier Cleaner and Descaler (HS-1933) is a liquid descaler and cleaner which removes lime, calcium, and similar types of mineral scale from humidifiers, evaporators, vaporizers, and other similar units. It also contr


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Crane Humidifier Cleaner and Descaler - 8 Ounces 6-Pack
Our Price: $109.08
Retail: $114.53
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Whirlpool Air Purifier Whispure 450 (Large Room)
(AP45030K)

The Whirlpool Whispure 450 (AP45030K) is a home air purifier which filters the dust, dander, pollen, mold spores, smoke, fabric fibers, allergens, and other contaminants in your air. The Whirlpool Whispure 450 air purifier features a True HEPA air pu

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Whirlpool Air Purifier Whispure 450 (Large Room)
Our Price: $249.99
Retail: $289.00
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Honeywell F300E1027 20x20 Electronic Air Purifier
(F300E1027)

The Honeywell F300E1027 20x20 Electronic Air Purifier has a rugged zinc-coated, roll-formed cabinet that provides superior strength and corrosion protection.

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Honeywell F300E1027 20x20 Electronic Air Purifier
Our Price: $569.99
Retail: $599.99
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Honeywell F200E1037 20x25 Whole-Home Air Cleaner
(F200E1037)

The Honeywell F200E1037 20x25 Whole-Home Air Cleaner does not require maintenance except for periodic battery changes and media filter replacement.

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Discontinued Product Read Description.
Honeywell F200E1037 20x25 Whole-Home Air Cleaner
Our Price: $229.99
Retail: $299.99
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Honeywell HCM-800P Humidifier
(HCM800-P)

The Honeywell HCM-800 PermaFresh Cool Moisture Humidifier helps relieve discomfort caused by dry air with soothing invisible moisture.


Discontinued Product Read Description.
Honeywell HCM-800P Humidifier
Our Price: $79.99
Retail: $89.99
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Honeywell 203373 Electronic Pre-Filter - 20x20
(203373)

The Honeywell 203373 Electronic Pre-Filter - 20x20 is a replacement pre-filter for 20" x 20" Honeywell model F50A or F50E air cleaner models. This electronic air cleaner pre-filter measures 10" x 19" x 3/4" and helps capture larger particulates in y


Discontinued Product Read Description.
Honeywell 203373 Electronic Pre-Filter - 20x20
Our Price: $24.89
Retail: $29.99
You Save 17%!

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BlueAir 16x25x1 High Efficiency Air Filter Kit
(BCST1625)

The BlueAir 16x25x1 High Efficiency Air Filter Kit includes two MERV 15 air filters, the MX2 Particle Charger, and an Automated Filter Check Timer. This BlueAir filter kit converts your existing central air system into an air purifier. The BlueAir h

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Discontinued Product Read Description.
BlueAir 16x25x1 High Efficiency Air Filter Kit
Our Price: $149.95
Retail: $199.99
You Save 25%!

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BlueAir 20x20x1 High Efficiency Air Filter Kit
(BCST2020)

The BlueAir 20x20x1 High Efficiency Air Filter Kit includes two replacement air filters, the MX2 Particle Charger, and an Automated Filter Check Timer. This BlueAir filter kit converts your existing central air system into a high efficiency air puri

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Discontinued Product Read Description.
BlueAir 20x20x1 High Efficiency Air Filter Kit
Our Price: $149.95
Retail: $199.99
You Save 25%!

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BlueAir 20x25x1 High Efficiency Air-Furnace Filter
(BCST2025)

The BlueAir 20x25x1 High Efficiency Air-Furnace Filter is a BlueAir filter kit that includes two replacement air filters, the MX2 Particle Charger, and an Automated Filter Check Timer that will convert your existing central air system into a high ef

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Discontinued Product Read Description.
BlueAir 20x25x1 High Efficiency Air-Furnace Filter
Our Price: $149.95
Retail: $199.99
You Save 25%!

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Hoover WindTunnel Vacuum Filter - Secondary Micron
(38765019 OEM)

This Hoover WindTunnel Vacuum Filter is a Hoover secondary micron vacuum filter for Hoover WindTunnel vacuums and Hoover Self-Propelled Wind Tunnel vacuum cleaners. Also known by part numbers 38765019 OEM and H-38765019.


Discontinued Product Read Description.
Hoover WindTunnel Vacuum Filter - Secondary Micron
Our Price: $3.99
Retail: $6.99
You Save 43%!

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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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