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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


General Aire 16x25 MERV10 Filter Media GA100A29
(4352)

The General Aire GA100A29 16x25 MERV10 Filter Media is the correct replacement filter for Honeywell F100 Series and Honeywell F150 Series Media Style Air Cleaners. These filters remove airborne particles to 1.0 micron to provide healthier indoor air.


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General Aire 16x25 MERV10 Filter Media GA100A29
Our Price: $29.99
Retail: $39.99
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GeneralAire G99 Ventilator Filter Gage
(4002)

The GeneralAire G99 is the correct replacement for the following Ventilators: GeneralAire Whole House Ventilato


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GeneralAire G99 Ventilator Filter Gage
Our Price: $12.62
Retail: $49.99
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Honeywell FC40R1136 18x24 Return Grille Air Filter
(FC40R1136)

The Honeywell FC40R1136 is the correct replacement for the following air return grille filters: Most air return filter grilles The Honeywell FC40R1136 18x24 Return Grille Air Filter measures 18 inches by 24 inches. This Honeywell FC40R1136 is


In stock! Ships in 1 business day.
Honeywell FC40R1136 18x24 Return Grille Air Filter
Our Price: $31.18
Retail: $39.99
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Honeywell FC200E1011 Media Filter 20x20x5- Merv 13
(FC200E1011)

The Honeywell FC200E1011 Media Filter 20x20x5- Merv 13 is a replacement air filter for the Honeywell 20X20 F100 and F200 media air cleaners. This Honeywell air filter boasts a MERV 13 rating and removes over 97% of 3 to 10 micron particles from indo


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Honeywell FC200E1011 Media Filter 20x20x5- Merv 13
Our Price: $44.99

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Lennox X5425 MERV 16 Pleated Furnace Filter Media
(X5425)

This Lennox X5425 MERV 16 Pleated Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store. This pleated filter is a genuine MERV 16 filter.

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In stock! Ships in 1 business day.
Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $99.95
Retail: $122.10
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Trane Perfect Fit Filter 23.5x21x5 BAYFTAH23M 3-Pk
(HTRN2321T1)

These three Honeywell air filters are compatible furnace filters that can be used as upgrades over the Trane Perfect Fit filter of the same size. Genuine Trane Perfect Fit filters have only a MERV 8 rating, while these compatible Honeywell furnace f

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In stock! Ships in 1 business day.
Trane Perfect Fit Filter 23.5x21x5 BAYFTAH23M 3-Pk
Our Price: $147.00
Retail: $160.00
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Honeywell 20x20x5 Filter FC100A1011 - MERV 8 2pk
(FFC20205HONM8)

Honeywell 20x20x5 FC100A1011 Air Filter is an economical compatible version of the OEM Honeywell FC100A1011 20"x20" Media AC Filter. To save money, this air filter replacement comes in a 2pk value set.


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Honeywell 20x20x5 Filter FC100A1011 - MERV 8 2pk
Our Price: $43.90
Retail: $50.00
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GeneralAire 12758 MERV 11 Filter Media Replacement
(4001)

The GeneralAire 12758 MERV 11 Filter Media Replacement is a replacement air filter for the GeneralAire AC1 and AC22 model air cleaners. This replacement filter media features a MERV 11 rating and Micro Fiber construction for the reduction of airborn


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GeneralAire 12758 MERV 11 Filter Media Replacement
Our Price: $48.99
Retail: $63.99
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Lennox X8349 MERV 10 Filter Maintenance Kit
(X8349)

The Lennox X8349 MERV 10 Filter Maintenance Kit is a filter maintenance kit for the Lennox PCO-12C PureAir Air Purification System. This maintenance kit includes one MERV 10 filter (X6664), one catalyst insert (75X73), and four UV bulbs (X8149). The

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Special Order. Ships in 9 days.
Lennox X8349 MERV 10 Filter Maintenance Kit
Our Price: $194.00
Retail: $225.25
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3M Filtrete Dust Reduction Filter - Filtrete 300
(Filtrete 300)

The Filtrete 300 Dust Reduction Filter is a replacement non-electrostatic pleated filter that attracts and captures household dust


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3M Filtrete Dust Reduction Filter - Filtrete 300
Our Price: $5.15
Retail: $9.99
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GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
(4521)

The General Air 3FM1625 MERV8 Filter Cartridge measures 16"x25"x3", and is the correct filter for General Aire MAC1200 Series Air Cleaners. This General Aire filter will dramatically reduce airborne contaminates to provide much healthier indoor air.


Special Order. Ships in 11 days.
GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
Our Price: $19.99
Retail: $29.99
You Save 33%!

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Skuttle Air Cleaner Filter 20x20x5 000-0448-003
(000-0448-003)

Skuttle 000-0448-003 Air Cleaner Filters measures 20"x20"x5", & dramatically reduces airborne particles such as dust, dust mites, pollen, mold spores, pet dander & other allergens from your indoor environment.


In Stock! Ships in 14 to 15 business days.
Skuttle Air Cleaner Filter 20x20x5  000-0448-003
Our Price: $30.00
Retail: $39.99
You Save 25%!

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GeneralAire 5FM2025 MERV 8 Filter Media Cartridge
(4501)

The General Aire 5FM2025 MERV 10 Filter Media Cartridge measures 20"x25"x5", and is the correct replacement part for General Air MAC 2000 and MACL Air Cleaner Systems; and TRION AirBear Supreme 2000 Air Cleaner Systems.


In stock! Ships in 1 business day.
GeneralAire 5FM2025 MERV 8 Filter Media Cartridge
Our Price: $68.99
Retail: $79.99
You Save 14%!

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Holmes HAPF220 Purifier Carbon PreFilter-2 Pack
(ROHAPF220CSM)

The Holmes HAPF220 Purifier Carbon PreFilter-2 Pack fits the following models of Holmes air purifiers: HAP222 HAP223 HAP2234 HAP412 HAP412G HAP422B HAP422G This air purifier pre filter reduces odors such as pet odors, musty odors, cookin


In stock! Ships in 1 business day.
Holmes HAPF220 Purifier Carbon PreFilter-2 Pack
Our Price: $10.99
Retail: $14.99
You Save 27%!

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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk
(AB-51625-8)

The Trion AB-51625-8 replaces the following Trion Air Bear air filters: Air Bear 1400 - 255649-103 Air Bear 1400 - 229990-103 Air Bear 2000 - 255649-102


Special Order. Ships in 13 days.
Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk
Our Price: $29.95
Retail: $34.95
You Save 14%!

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French Scents Air Filter Freshener - Tropical Bay
(43044)

The French Scents Air Filter Freshener (43044 Tropical Bay Scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area.


Out of stock
French Scents Air Filter Freshener - Tropical Bay
Our Price: $2.49
Retail: $3.99
You Save 38%!

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Honeywell FC35A1035 Furnace/ AC Air Filter 16x20x5
(FC35A1035 R)

The Honeywell FC35A1035 R is a replacement air cleaner filter that is the correct compatible replacement for the following air filter: Honeywell FC100A1003 The Honeywell FC35A1035 Furnace/ AC Air Filter 16x20x5 fits Honeywell 16 inch x 20 inch


In stock! Ships in 1 business day.
Honeywell FC35A1035 Furnace/ AC Air Filter 16x20x5
Our Price: $29.99
Retail: $49.99
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FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
(FFC26215TRN OKGM)

The Filters Fast 5" Trane PF BAYFTAH26M Compatible FFC26215TRN OKGM fits the following: Any air cleaner that requires a 26" x 21" x 5" filter This Filters Fast air filter is also compatible with the Trane Perfect Fit BAYFTAH26M air filter. Thi


In Stock! Ships in 10 to 11 business days.
FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
Our Price: $68.66
Retail: $109.99
You Save 38%!

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Hamilton Humidifier Evaporator Pad EP-037
(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 9 days.
Hamilton Humidifier Evaporator Pad EP-037
Our Price: $17.99
Retail: $29.99
You Save 40%!

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French Scents Air Filter Freshener Mountain Breeze
(42068)

The French Scents Air Filter Freshener (42068 Mountain Breeze scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area. This French Sc


Out of stock
French Scents Air Filter Freshener Mountain Breeze
Our Price: $1.99
Retail: $3.99
You Save 50%!

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Lennox X8312 MERV 16 Expandable Filter Replacement
(X8312)

The Lennox X8312 MERV 16 furnace filter is an expandable filter for your furnace system. Also known as the HCXF16-16, this pleated air filter will protect both your family and HVAC system. This MERV 16 rated filter will capture very small particles.

Free shipping within the continental United States!

Special Order. Ships in 7 days.
Lennox X8312 MERV 16 Expandable Filter Replacement
Our Price: $108.16
Retail: $124.81
You Save 13%!

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Filters Fast Trion Air Bear 16x25x3 Air Filter 3pk
(FFC16253TAB)

Replace your Trion Air Bear 255649-101 16x25x3 air filter with this Filters Fast compatible AC filter, which features a MERV 11 rating, an upgrade from the MERV 8 Trion Air Bear.


In Stock! Ships in 1 to 2 business days.
Filters Fast Trion Air Bear 16x25x3 Air Filter 3pk
Our Price: $65.00

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Kenmore 83157 Carbon PreFilter 2-Pack
(KENMORE 83157 1 R)

The Kenmore 83157 Carbon PreFilter 2-Pack is the correct replacement for: several Kenmore air cleaner models This carbon prefilter is a cut to fit sheet that measures 15 3/4" x 48". This Kenmore prefilter removes large particles and common hou


In stock! Ships in 1 business day.
Kenmore 83157 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
You Save 10%!

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Filters Fast Trion Compatible 20x20x5, 2-pack
(FFC20205TAB)

The Filters Fast Compatible 20x20x5 MERV 11 Air Filter can be used as an upgrade for Trion Air Bear part number 255649-103. Upgrade your Trion Air Bear Filter today for just a few extra dollars!


In Stock! Ships in 1 to 2 business days.
Filters Fast Trion Compatible 20x20x5, 2-pack
Our Price: $48.80
Retail: $49.80
You Save 2%!

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Holmes HAPF30D Comp Single Replacement HEPA Filter
(HAPF30D)

The Holmes HAPF30D compatible single Replacement HEPA Filter removes up to 99% of airborne dust and pollen, in addition to reducing pet dander, smoke and mold spores.


In stock! Ships in 1 business day.
Holmes HAPF30D Comp Single Replacement HEPA Filter
Our Price: $15.24
Retail: $29.99
You Save 49%!

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