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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.


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Air Filters product list


Filters Fast 15x20x5 MERV 8 Return Grille Filter
(FFRAGM8-15205)

The Filters Fast FFRAGM8-15205 fits the following: Most air returns that require a 15" x 20" filter The Filters Fast 15x20x5 MERV 8 Return Grille Filter will reduce pollen, dust, pet dander, and other allergens from the air inside your home. T


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Filters Fast 15x20x5 MERV 8 Return Grille Filter
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Filters Fast 16x24x5 MERV 8 Return Grille Filter
(FFRAGM8-16245)

The Filters Fast 16x24x5 MERV 8 Return Grille Filter is a MERV 8 odor killer filter that is an economical upgrade over your basic poly-pleated or fiberglass filter media. HVAC system life can be increased or extended through the use of this high eff


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Filters Fast 16x24x5 MERV 8 Return Grille Filter
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Filters Fast 20x24x5 MERV 8 Return Grille Filter
(FFRAGM8-20245)

The Filters Fast FFRAGM8-20245 fits the following: Most air returns that require a 20" x 24" filter The Filters Fast 20x24x5 MERV 8 Return Grille Filter reduces pollen, dust, pet dander and other allergens from your indoor air. This air return


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Filters Fast 20x24x5 MERV 8 Return Grille Filter
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Filters Fast 24x30x5 MERV 8 Return Grille Filter
(FFRAGM8-24305)

The FiltersFast MERV 8 Return Grille Filter fit most air cleaners requiring 24" x 30" x 5" filters, and efficiently reduce airborne particulates such as dust, pet dander, pollen,dust mites, etc to provide healthier indoor air.


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Filters Fast 24x30x5 MERV 8 Return Grille Filter
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Filters Fast 10x10x1 MERV 8 Filter 6-Pack
(FFOKGM 6-PACK-10101)

The Filters Fast FFOKGM 6-PACK-10101 can be used for most air cleaners requiring 10"x10"x1" filter cartridges. These filters will significantly reduce dust, pet dander, pollen, mildew, mold and other allergens from your indoor air.


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Filters Fast 10x10x1 MERV 8 Filter 6-Pack
Our Price: $42.99
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Austin Air HM405 Allergy Machine - Silver
(HM405 Silver)

The Austin Air HM405 Allergy Machine - Silver 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, f

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Austin Air HM405 Allergy Machine - Silver
Our Price: $574.99
Retail: $599.99
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Quality Flow 12x24x4 MERV 14 Panel Filter 3-Pack
(FFQF1412244)

The Filters Fast FFQF1412244 fits the following: Any HVAC system that requires a 12 inch x 24 inch x 4 inch filter The Quality Flow 12x24x4 MERV 14 Filter 3-Pack features quality flow proprietary media that provides lower pressure drop than st

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Quality Flow 12x24x4 MERV 14 Panel Filter 3-Pack
Our Price: $199.98
Retail: $219.99
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Filters Fast MERV 8 20x24x5 Air Filter 2-Pack
(FFC20245GA OKGM)

The FiltersFast MERV 8 20x24x5 Air Filter can be used on Generalaire AC-1, Carrier 31MF020100, Byrant 902BXX020, and air cleaners requiring a 20"x24"x5" filter. These effective air filters remove airborne particles to provide healthier indoor air.


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Filters Fast MERV 8 20x24x5 Air Filter 2-Pack
Our Price: $60.66
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Hunter Foam Mesh Air Cleaner Prefilter 2pk 744700
(744700)

The Hunter 744700 fits the following models of air cleaners: Hunter 30010 Hunter 30025 Hunter 30040 Hunter 37025 The Hunter Foam Mesh Air Cleaner Prefilter 2pk 744700 is a prefilter made of foam mesh. This Hunter 744700 filter has approxima


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Hunter Foam Mesh Air Cleaner Prefilter 2pk 744700
Our Price: $9.98
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Holmes Foam Air Cleaner Prefilter 2 pack APF-6
(APF-6)

The Holmes APF-6 fits the following model of air purifier: Holmes HAP-292 The Holmes Foam Air Cleaner Prefilter 2pk APF-6 works to clean large particulates from your indoor air. This Holmes foam prefilter will extend the life of HEPA carbon fi


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Holmes Foam Air Cleaner Prefilter 2 pack APF-6
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Holmes Foam Air Cleaner Prefilter 2-pk APF-1
(Holmes APF-1)

The Holmes Foam Air Cleaner Prefilter 2pk APF-1 is a replacement foam pre-filter that fits the Holmes Model HAP220, HAP221, HAP222, HAP223, and HAP2234 air cleaners. This two pack of Holmes air cleaner replacement filters measures approximately 5 1/


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Holmes Foam Air Cleaner Prefilter 2-pk APF-1
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Holmes Foam Air Cleaner Prefilter 2pk 9000233
(9000233)

The Holmes Foam Air Cleaner Prefilter 2pk 9000233 is a replacement foam pre-filter for the Holmes Model HAP422 Air cleaner. This Holmes air filter measures approximately 4" x 19 1/4" x 3/8" and removes larger particulates from your indoor air. This


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Holmes Foam Air Cleaner Prefilter 2pk 9000233
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Bionaire Foam Humidifier Prefilter 326
(Bionaire 326)

The Bionaire Foam Humidifier Prefilter 2pk 326 is a replacement foam prefilter for several Bionaire Model Air Cleaners. This Bionaire air filter measures approximately 5.25" x 7.25" and effectively reduces the larger cluster of airborne particles fr


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Bionaire Foam Humidifier Prefilter 326
Our Price: $3.99
Retail: $4.99
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Lennox Foam Humidifier Filter - Lennox LX18
(LX18)

The Lennox Foam Humidifier Filter LX18 is a replacement foam filter for the Lennox WSI-18 furnace mount humidifier. This two pack of Lennox foam prefilters measures 14" x 12 3/4" x 1/8" and reduces mineral pollutants within your WS1-18 humidifie


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Lennox Foam Humidifier Filter - Lennox LX18
Our Price: $37.98
Retail: $39.88
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Filters Fast 14x24x5 MERV 13 Return Grille Filter
(FFRAG13-14245)

The Filters Fast 14x24x5 MERV 13 Return Grille Filter is a replacement air filter that measures 14" x 24" x 5" and boasts a MERV 13 rating. This Filters Fast air furnace filter's 5 inch depth, coupled with its MERV 13 efficiency rating, results the


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Filters Fast 14x24x5 MERV 13 Return Grille Filter
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Filters Fast 15x20x5 MERV 13 Return Grille Filter
(FFRAG13-15205)

The Filters Fast 15x20x5 MERV 13 Return Grille Filter can be used in almost every air cleaner system requiring a 15"x20"x5" media filter cartridge and remove at least 90% of all particles 1.0-10.0 microns.


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Filters Fast 15x20x5 MERV 13 Return Grille Filter
Our Price: $41.99
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Filters Fast 16x24x5 MERV 13 Return Grille Filter
(FFRAG13-16245)

The FiltersFast FFRAG13-16245 fits the following: Any air return that calls for a 16" x 24" filter The Filters Fast 16x24x5 MERV 13 Return Grille Filter removes 90% of particles 1.0 to 10.0 microns from your indoor air. This return grill air f


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Filters Fast 16x24x5 MERV 13 Return Grille Filter
Our Price: $41.99
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Filters Fast 20x24x5 MERV 13 Return Grille Filter
(FFRAG13-20245)

The Filters Fast air furnace filters Merv 13 is a 20x24x5 inch filter for your home. Filters Fast air filters offer the highest quality in air filtration at a more economical price. This Filters Fast air filter features a Merv 13 rating


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Filters Fast 20x24x5 MERV 13 Return Grille Filter
Our Price: $45.99
Retail: $51.99
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Filters Fast 24x30x5 MERV 13 Return Grille Filter
(FFRAG13-24305)

The Filters Fast air furnace filter measures 24x30x5 inches. This filter fits your 1" residential wall or ceiling mount return grill. Although this Filters Fast filter is 5" deep, it fits your standard 1" size 24x30x5 and then extends 4 inches into


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Filters Fast 24x30x5 MERV 13 Return Grille Filter
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Filters Fast MERV 8 16x27x6 Air Filter 2-Pack
(FFC162766SG OKGM)

The Filters Fast MERV 8 16x27x6 Air Filter 2-Pack is a pack of replacement air filters that is an upgrade over the Aprilaire Space Gard 2400 AC Filter. This 16" x 27" 6" has a MERV 8 rating for the reduction of airborne pollutants like pollen, dir


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Filters Fast MERV 8 16x27x6 Air Filter 2-Pack
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FiltersFast Trane 21x23x5 Compatible Filter 2-Pack
(FFC21235TRN OKGM)

The Filters Fast 5" Trane Perfect Fit 21x23x5 Compatible FFC21235TRN OKGM is the correct replacement for the following: any air cleaner that requires a 21" x 23" x 5" filter This Filters Fast air filter also replaces Trane Perfect Fit BAYFTAH23


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FiltersFast Trane 21x23x5 Compatible Filter 2-Pack
Our Price: $42.99
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Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack
(FFOKGM4 6PACK)

The Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack is a set of replacement air filters that can eliminate common odors from your home or office, including pet odors, gaseous odors, and smoke and cigarette odors. These odor killer filters utilize G

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Filters Fast 4" MERV 8 Odor Killer Filter 6-Pack
Our Price: $148.53
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Filters Fast MERV 8 Odor Killer 2" 6-Pack
(FFOKGM 2 INCH)

The Filters Fast MERV8 Odor Killer 2" 6-Pack is an effective replacement charcoal air filter to eliminate pet odors, gases, smoke odors, cigarette odors and other contaminants from your indoor air.


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Filters Fast MERV 8 Odor Killer 2" 6-Pack
Our Price: $85.02
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FiltersFast 5" Aprilaire Compatible Filter 2-Pack
(FFC20256SG OKGM)

The FiltersFast 5" Aprilaire Compatible FFC20256SGOKGM is a compatible replacement filter that is an upgrade over the Aprilaire Space Gard 2200 air filter. This 6" air filter features a MERV 8 rating while the Aprilaire 2200 features a lower MERV 1


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FiltersFast 5" Aprilaire Compatible Filter 2-Pack
Our Price: $66.66
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FiltersFast 5" WR Compatible FFC20265WR OKGM
(FFC20265WR OKGM)

The FiltersFast 5" WR Compatible FFC20265WR OKGM is a compatible replacement air filter that is an upgrade over the White Rodgers F825-0549 air filter. The Filters Fast FFC20265WR OKGM 20" x 26" x 5" air filter can be used in several White Rodgers A


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FiltersFast 5" WR Compatible FFC20265WR OKGM
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