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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:


Trion 320283-002 TTM33 Charcoal Filter
(320283-002)

The Trion 320283-002 TTM33 Charcoal Filter is a replacement air filter for the Trion TTM33 that measures 18" x 24". This Trion filter features activated charcoal which absorbs unpleasant odors in your air so you can breathe easily. This activated ch


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Trion 320283-002 TTM33 Charcoal Filter
Our Price: $62.27
Retail: $72.99
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Trion 320283-003 19x19 Charcoal Filter
(320283-003)

The Trion 320283-003 19x19 Charcoal Filter measures 19" x 19". This Trion air filter replacement features activated charcoal which absorbs unpleasant odors in your air so you can breathe easily. This activated charcoal air filter should be replaced

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Trion 320283-003 19x19 Charcoal Filter
Our Price: $95.97
Retail: $111.99
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Magnetic Vent Cover HVAC Air Filter 4x18 100-Pack
(MAGNETIC VENT 4X18)

Add a durable and reusable barrier of protection from hair, dust, and bugs with an easy to install 4x18 Magnetic Vent Cover HVAC Air Filter. Constructed from a soft PVC grid using a polypropylene mesh the filter attaches to your metal register.


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Magnetic Vent Cover HVAC Air Filter 4x18
Our Price: $1,195.00

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Magnetic Vent Cover HVAC Air Filter 8x18 70-Pack
(MAGNETIC VENT 8X18)

Some of the best things in life are simple, like a washable 8x18 Magnetic Vent Cover HVAC Air Filter that installs in no time at all and prevent pesky hair, dirt, and bugs from going into or leaving your air vents.


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Magnetic Vent Cover HVAC Air Filter 8x18
Our Price: $1,046.50

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Aprilaire 113 Air Filter Media for Model 1110 - MERV 13
(Aprilaire 113)

Provide your family with the cleanest, freshest air possible with the Aprilaire 113.


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Aprilaire 113 Air Filter Media for Model 1110 - MERV 13
Our Price: $415.95
Retail: $478.95
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Holmes HAPF600 HEPA Filter for Harmony Series
(HAPF600)

The Holmes HAPF600 HEPA Filter fits new Harmony Series Modular Air Purifiers HAP615, HAP625, HAP650, HAP675, HAP725, HAP750, HAP1625, HAP1650, HAP1750, HAP1725 and replaces GE Brand 10633, 106643, and 106653.


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Holmes HAPF600 HEPA Filter for Harmony Series
Our Price: $26.00
Retail: $29.99
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Holmes HAPF21, 9000436 Replacement Filter
(HAPF21)

The Holmes HAPF21 Replacement Filter is the main HEPA filter in Holmes models HAP222, HAP221, HAP220, HAP223, and HAP2234. Also known as part number HAPF21CS.


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Holmes HAPF21, 9000436 Replacement Filter
Our Price: $12.00
Retail: $12.99
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Holmes HAPF22, 9000439 HEPA Replacement Filter
(HAPF22)

The Holmes HAPF22, 9000439 HEPA Replacement Filter is a HEPA filter with an activated carbon layer, great for trapping microscopic allergens & dust. Made for use in Holmes models HAP220, HAP221, HAP223, and HAP2234.


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Holmes HAPF22, 9000439 HEPA Replacement Filter
Our Price: $15.99
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Honeywell Replacement HEPA Filter, 21500
(21500)

The Honeywell 21500 Replacement HEPA Filter fits Honeywell models 50150, 51500, 83330, 61500, 11500 Series, 18150 Series, 11520 Series, and 17200 Series. Genuine Honeywell part.


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Honeywell Replacement HEPA Filter, 21500
Our Price: $74.99
Retail: $87.99
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3M Filtrete 4 Inch Allergen Media Filter 4-pack
(4 inch Allergen 4-pack)

3M Filtrete Allergen Reduction Filter for Media Air Cleaners are the smart choice if you're looking to upgrade or retrofit the air filter in your existing HVAC system. Captures 97% of large airborne allergens like pollen, mold spores, & dust mites.

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3M Filtrete 4 Inch Allergen Media Filter 4-pack
Our Price: $131.00
Retail: $152.99
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Holmes HWF100 Humidifier Replacement Filter 3-Pack
(HWF100)

Holmes, Harmony Humidifier HWF100 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HM630, HM729, HM4600, HM6000, HM6000RC, HM6005, HM6600, HM7204, HM7305, HM7305RC, HM7306, BCM645, BCM5520RC, and more...


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Holmes HWF100 Humidifier Replacement Filter 3-Pack
Our Price: $16.00
Retail: $17.99
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Holmes HWF65 Replacement Humidifier Filter
(HWF65)

Holmes HWF65 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HM1800, HM1840, HM1845, HM1850, HM1851, HM1855, HM1865, HM1888, HM1889, HM1895, HM2059, HM2060, HM2060W, HM3000, HM3800, HM3850, and more..


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Holmes HWF65 Replacement Humidifier Filter
Our Price: $17.99
Retail: $19.99
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Holmes HWF75 Humidifier Filter - HM1700, HM1280
(HWF75)

Holmes HWF75 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HM3500, HM3600, HM3640, HM3641, HM3650, HM3655, WWH3300, and WWHM3600.


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Holmes HWF75 Humidifier Filter - HM1700, HM1280
Our Price: $21.99
Retail: $24.99
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FiltersFast Custom Size Air Filters 6 Pack
(FFCAF)

FiltersFast Air Filters are an economical alternative if you're looking for a quality air filter without paying a premium price! FiltersFast Air Filters are now available in custom sizes! View details for order guidelines.


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FiltersFast Custom Size Air Filters 6 Pack
Our Price: $42.00
Retail: $48.99
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FiltersFast GeneralAire Compatible 20x24x5, 2-pack
(FFC20245GA)

The FiltersFast Compatible 20x24x5 MERV 11 Air Filter can be used as a replacement for GeneralAire part number 12758. Fits Generalaire AC-1 and Byrant 902BXX020.


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FiltersFast GeneralAire Compatible 20x24x5, 2-pack
Our Price: $50.25
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FiltersFast MERV 11 Return Grille Air Filter 5"
(FFRAGF)

The FiltersFast MERV 11 Return Grille Air Filter 5" are a great option for upgrading or replacing the traditional 1-inch air filter found in your home or office. View details to learn more...


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FiltersFast MERV 11 Return Grille Air Filter 5"
Our Price: $31.99
Retail: $39.99
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FiltersFast MERV 13 Return Grille Air Filter - 5"
(FFRAG13)

Protect your health, your environment and your wallet with a FiltersFast MERV 13 Return Grille Air Filter. MERV 13 is one of the highest efficiency ratings available, and FiltersFast now offers this rating in a 5" Return Air Grille application.


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FiltersFast MERV 13 Return Grille Air Filter - 5"
Our Price: $41.99
Retail: $49.99
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Hunter 30928 HEPAtech Purifier Filter
(30928)

The Hunter 30928 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


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Hunter 30928 HEPAtech Purifier Filter
Our Price: $36.95
Retail: $42.99
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Hunter 30940 QuietFlo HEPA Purifier Filter
(30940)

The Hunter 30940 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


In Stock! Ships in 8 to 9 business days.
Hunter 30940 QuietFlo HEPA Purifier Filter
Our Price: $81.99
Retail: $95.99
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Hunter 30943 QuietFlo HEPA Purifier Filter
(30943)

The Hunter 30943 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


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Hunter 30943 QuietFlo HEPA Purifier Filter
Our Price: $66.95
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Honeywell FC100A1052 12.5" x 20" Media Air Filter
(FC100A1052)

The Honeywell FC100A1052 12.5" x 20" Replacement Air Filter boasts an upgraded MERV 11 rating (based on ASHRAE Standard 52.2) and is used with the Honeywell Enviracaire F27F1032 Air Cleaner.


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Honeywell FC100A1052 12.5" x 20" Media Air Filter
As Low As: $30.00
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FiltersFast MERV 7 Pleated Filters 6 pk
(FFM7Pleat)

With an initial pressure drop of around .17, these FiltersFast 2" MERV 7 Pleated Panel Filters are comparable to or an upgrade over such other pleat filters as the American Air or AmAir PerfectPleat, the Airguard Xtreme Pleated Panel Filters ...


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FiltersFast MERV 7 Pleated Filters 6 pk
Our Price: $29.95
Retail: $38.99
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Whirlpool Refrigerator Air Filter System W10153422
(W10153422)

The Whirlpool W10153422 Refrigerator Air Filter and Housing installs easily into 22 - 25 cu. ft. Whirlpool and KitchenAid side by side refrigerators with air vents in the snack drawer. The activated carbon in this Whirlpool refrigerator air filter


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Whirlpool Refrigerator Air Filter System W10153422
Our Price: $16.99
Retail: $18.99
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Odor Killer Return Grille Air Filter - MERV 8, 5"
(FFRAGGM)

The Odor Killer Return Grille Air Filter eliminates smoke odors, cigarette odors, pet odors, gases and other contaminants from your indoor air. Since this return grille air filter is 5" deep compared to the standard 1" air filter, its greater surfac


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Odor Killer Return Grille Air Filter - MERV 8, 5"
Our Price: $30.99
Retail: $45.99
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Whirlpool Air Purifier Whispure 250 (Medium Room)
(AP25030K)

The Whirlpool Whispure 250 (AP25030K) 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 250 air purifier features a true HEPA air pu

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In Stock! Ships in 6 to 7 business days.
Whirlpool Air Purifier Whispure 250 (Medium Room)
Our Price: $199.99
Retail: $235.99
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Filters Fast - Air Filters

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