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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


FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M
(FFC21235TRNM13)

The FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M is a compatible version of the genuine Trane Perfect fit 21x23x5 Air Filter.

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In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Trane 21x23x5 Perfect Fit BAYFTAH23M
Our Price: $90.95
Retail: $140.00
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FiltersFast Brand F825-0548 White Rodgers 16x26x5 2-Pack
(FFC16265WR)

The Filters Fast Compatible 16x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0548. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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FiltersFast Brand F825-0548 White Rodgers 16x26x5 2-Pack
Our Price: $55.25

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FiltersFast 14ALL Replacement For Holmes HAPF93
(HAPF93)

The Holmes HAPF93 Carbon Odor Filter Replacement fits Holmes air purifier models Holmes HAP293 (Holmes HAP-293), Holmes HAP2934 (Holmes HAP-2934), and Holmes HAP294 (Holmes HAP-294). This Holmes HEPA filter pad replacement measures approximately 45.


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FiltersFast 14ALL Replacement For Holmes HAPF93
As Low As: $9.95
Retail: $19.99
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Filters Fast MERV 7 Pleated Filters 6 pk
(FFM7Pleat)

With an initial pressure drop of around .17, these Filters Fast 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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Filters Fast MERV 7 Pleated Filters 6 pk
Our Price: $28.95
Retail: $39.00
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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.

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Lennox X8312 MERV 16 Expandable Filter Replacement
Our Price: $110.16
Retail: $124.81
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Lennox X8348 MERV 10 Filter Maintenance Kit
(X8348)

The Lennox X8348 MERV 10 Filter Maintenance Kit is a maintenance kit for the Lennox PCO-20C PureAir Air Purification System. This PureAir maintenance kit includes: one MERV 10 filter, also known as part number X6667; one catalyst insert, also known

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Lennox X8348 MERV 10 Filter Maintenance Kit
Our Price: $226.30
Retail: $254.95
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Carrier 356066-0602 Pre Filter for EACBAXCC0014
(356066-0602)

The Carrier 356066-0602 Pre Filter is a genuine OEM factory replacement pre filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0014 Electronic Air Cleaner.


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Carrier 356066-0602 Pre Filter for EACBAXCC0014
Our Price: $34.95
Retail: $39.95
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Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
(Aprilaire 4119)

This Spacegard Aprilaire 2200 Filter Pleat Spacer (Aprilaire 4119) is used in the Spacegard Aprilaire 2200 Air Cleaner, Spaceguard Aprilaire 2250 Air Cleaner, and other compatible Spaceguard Aprilaire 2200 Series air cleaner models. There are five p


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Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
Our Price: $20.95
Retail: $24.99
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FiltersFast Brand White Rodgers F825-0549 MERV13 2Pack
(FFC20265WRM13)

The FiltersFast Brand White Rodgers F825-0549 MERV13 2Pack is a compatible alternative that's a part of the White Rodgers F825 Series residential air cleaner replacement filters.


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FiltersFast Brand White Rodgers F825-0549 MERV13 2Pack
Our Price: $81.00
Retail: $100.00
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Universal Carbon Range Hood Filter - Trim to Fit
(RYM1518C)

This Universal Carbon Oven Range Hood Filter (RYM1518C) is a trim to fit oven range oven carbon filter for use with many over the range oven hoods (ducted and non-ducted), microwave ovens, and other similar applications requiring odor elimination. I


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Universal Carbon Range Hood Filter - Trim to Fit
Our Price: $20.99
Retail: $24.99
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Trion Air Bear Cub Filter 16x25x3 - 2-Pack 2-Pack
(AB316258)

The 6-Pack Trion Air Bear Cub Filter is a replacement Trion filter that works in all of your Trion Air Bear cleaners requiring a 16x25x3 size filter. Recommended by the Green Building Council, the Trion Air Bear filters replacement is a HEPA 8 filte


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Trion Air Bear Cub Filter 16x25x3 - 2-Pack
Our Price: $26.96

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Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk 2-Pack
(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


In Stock! Ships in 13 to 14 business days.
Trion Air Bear Supreme 1400 Comp Air Filters 2-Pk
Our Price: $63.90

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Hunter 30917 HEPAtech Purifier Filter
(30917)

The Hunter 30917 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 30917 HEPAtech Purifier Filter
Our Price: $23.99
Retail: $24.95
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Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
(BAYFTFR21P4A)

The Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1 fits several air cleaner models made by Trane. This Trane furnace filter measures approximately 21" x 27" x 1" and has pleats for the purification of your indoor air. This Trane Perfect Fit filter


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Trane Perfect Fit BAYFTFR21P4A Filter - 21x27x1
Our Price: $21.90

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Honeywell Replacement HEPA Filter, 23500
(23500)

The Honeywell 23500 Replacement HEPA Filter fits Honeywell Enviracaire Air Purifiers models 13530, 13531, 13532, 13533 (300i), 50200, 50201, and 52000 and Sears Kenmore models 83165 and 83331. Genuine Honeywell part.


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Honeywell Replacement HEPA Filter, 23500
Our Price: $61.25
Retail: $64.99
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Lennox X4137 HEPA 20 Carbon PreFilter Replacement
(X4137)

The Lennox X4137 HEPA 20 Carbon PreFilter Replacement is a replacement carbon pre-filter for the Lennox Healthy Climate HEPA 20 Filtration System. This carbon pre-filter is the first stage of the HEPA 20 filtration process.


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Lennox X4137 HEPA 20 Carbon PreFilter Replacement
Our Price: $38.67
Retail: $46.95
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Awair Air Quality Sensor - Second Edition
(AWAIR)

The Awair Air Quality Sensor takes the guess work out of the air you and your family are breathing inside your home.


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Awair Air Quality Sensor - Second Edition
Our Price: $200.00
Retail: $299.99
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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack 4-Pack
(98N42)

The Lennox 98N42 is a MERV 8 furnace filter 4-pack for your home. This furnace filter will protect your home from unhealthy contaminants and help keep your heating and cooling bill low.


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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack
Our Price: $37.95

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Honeywell FC40R1110 Return Grille Air Filter 14X20x3
(FC40R1110)

The Honeywell FC40R1110 is a return air grille filter that fits the following: Any return air grille that uses a 14 inch x 20 inch x 4 inch filter The Honeywell FC40R1110 Furnace Air Filter - 14X20 has a Minimum Efficiency Reporting Value (MER


In Stock! Ships in 5 to 6 business days.
Honeywell FC40R1110 Return Grille Air Filter 14X20x3
Our Price: $62.95
Retail: $139.98
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Trion Air Bear Supreme Filter 20x20x5 MERV11
(259112-103)

The Trion Air Bear Supreme Filter 20x20x5 MERV11 is an Air Bear filter with a MERV 11 rating and built-in frame strength. This genuine Air Bear filter boasts pre-applied gasketing on the pre-assembled filter in order to prevent air bypass. The MERV


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Trion Air Bear Supreme Filter 20x20x5 MERV11
Our Price: $47.99
Retail: $49.99
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FiltersFast Brand Trane 24x26x5 Perfect Fit BAYFTFR24M
(FFC24265TRNM13)

FiltersFast Brand Trane 24x26x5 Perfect Fit BAYFTFR24M

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In Stock! Ships in 2 to 3 business days.
FiltersFast Brand Trane 24x26x5 Perfect Fit BAYFTFR24M
Our Price: $80.95
Retail: $140.00
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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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Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $101.95
Retail: $122.10
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Bionaire 611D Replacement For Bionaire 611DCS Compatible Dual Air Filter
(611DCS)

The Bionaire 611DCS dual air filter cartridge is for use with your Bionaire model air purifier. This dual air purifier filter inclueds both a main and carbon filter for better air filtration. The carbon and air filter work together to remove harmful


In stock! Ships in 1 business day.
Bionaire 611D Replacement For Bionaire 611DCS Compatible Dual Air Filter
Our Price: $11.99
Retail: $14.99
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Lennox 75X66 Metal Mesh Filter
(75X66)

The Lennox 75X66 Metal Mesh Filter is the correct replacement for the following air cleaner: Lennox Pureair PCO-2OC The Lennox Pureair air cleaner is the only air cleaner made that destroys odors and VOC's, and has a MERV rating of MERV 16.

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Lennox 75X66 Metal Mesh Filter
Our Price: $154.00
Retail: $199.99
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Honeywell 209989 Air Cleaner Pre-Filter - 16x20 2-Pack
(209989)

The Honeywell 209989 Air Cleaner Pre-Filter - 16x20 includes two 16" x 10" pre-filters for Honeywell 16" x 20" air cleaner models. This Honeywell pre-filter trap larger particulates in your air to extend the life of your air filter. This air cleaner


In Stock! Ships in 3 to 4 business days.
Honeywell 209989 Air Cleaner Pre-Filter - 16x20
Our Price: $65.20

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