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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


Holmes HWF62 Humidifier Filter - HM1280, HM1700
(HWF62)

Holmes HWF62 Humidifier Filter features Microban technology and is designed for use with Humidifier Models: HLS1300, HLS1400, HM1230, HM1280, HM1285, HM1295, HM1295, HM1296, HM1700, HM1760, HM2408, HM1275, HM1450, and HM1740.


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Holmes HWF62 Humidifier Filter - HM1280, HM1700
Our Price: $12.99
Retail: $14.99
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Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
(FFC20255TABM13)

The Trion 20x25x5 Air Bear Furnace Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 20x25x5, 255649-102.


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Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
Our Price: $74.99
Retail: $80.00
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Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
(FFC215215TRNM8)

This Trane Perfect Fit 21x21.5x5 BAYFTAH21M is an economical compatible version of the genuine OEM Trane Perfect Fit 21.5x21x5 Filter.


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Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
Our Price: $63.99
Retail: $70.00
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Honeywell FC40R1003 Return Grille Filter
(FC40R1003)

The Honeywell FC40R1003 a high-efficiency, replacement filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 20x20x4. Genuine Honeywell Part.


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Honeywell FC40R1003 Return Grille Filter
As Low As: $43.50
Retail: $73.34
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Bionaire 900 Replacement Humidifier Filters 2-Pack
(CBW9)

The 900 Humidifier Filters Two-Pack, is a humidifier wick filter that works in your Bionaire Humidifier. The humidifier filter wick works with your Bionaire humidifier to produce the best humidified air quality for your home. These Bionaire


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Bionaire 900 Replacement Humidifier Filters 2-Pack
Our Price: $11.99
Retail: $14.99
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Hunter 30901 Carbon Purifier Pre-Filter
(30901)

The Hunter 30901 Carbon Pre-Filter fits all Hunter QuietFlo and HEPAtech purifiers. The 30901 Carbon Pre-Filter's activated charcoal absorbs odors from pets, smoking, cooking and more.


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Hunter 30901 Carbon Purifier Pre-Filter
As Low As: $18.50
Retail: $27.95
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Holmes HAPF60 Carbon Pre-Filter 4-Pack
(HAPF60)

The Holmes HAPF60 Carbon Pre-Filter 4-Pack fits Holmes HAP615, HAP625, HAP650, HAP675, and others. In an average household 1 Pre-filter will last 3 months--order your year supply today!


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Holmes HAPF60 Carbon Pre-Filter 4-Pack
Our Price: $8.95
Retail: $12.99
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Filtrete Dust & Pollen Furnace Filter (Light Blue)
(Dust and Pollen)

The Filtrete Dust & Pollen Furnace Filter is the right choice if you're looking for an economical upgrade from cheap 1 month furnace filters. The Filtrete "Blue Filter" features electrostatically charged fibers and is ideal for high-velocity..


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Filtrete Dust & Pollen Furnace Filter (Light Blue)
Our Price: $12.99
Retail: $14.99
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Carrier EXPXXFIL0020 EZ-FLEX Air Purifier Filter
(EXPXXFIL0020)

The Carrier EXPXXFIL0020 Air Purifier Filter is a genuine OEM factory replacement air filter for Bryant, Carrier, Payne, Day-Night, as well as certain Honeywell, Space-Gard, and Trion air purifiers. It will fit many compatible air purifiers includin


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Carrier EXPXXFIL0020 EZ-FLEX Air Purifier Filter
Our Price: $41.95
Retail: $49.95
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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
(FFC162766SG)

The Filters Fast Compatible 16x27x6 MERV 11 Air Filter can be used as an upgrade for the Aprilaire Space Gard 2400. Upgrade your Space Gard AC filter today to the pre-assembled, easy to install Filters Fast Space Gard Compatible 16x27x6!


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Aprilaire Space Gard 2400 Compat. 16x27x6 2 PACK
Our Price: $45.00
Retail: $59.99
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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
(FFC16255HONM13)

The Honeywell 16x25x5 Filter is the compatible version of the genuine Honeywell FC100A Series Residential Air Cleaner Filter.


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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
Our Price: $74.99
Retail: $90.00
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Lennox X0445 MERV 10 Pleated Furnace Filter Media
(X0445)

This Lennox X0445 MERV10 Pleated Furnace Filter Media is a part of the Lennox “Healthy Climate” line of indoor air quality products. This Lennox Healthy Climate Filter is an expandable media air filter.


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Lennox X0445 MERV 10 Pleated Furnace Filter Media
Our Price: $29.90
Retail: $34.10
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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: $15.99
Retail: $20.00
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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
(50000293-004)

The Honeywell 50000293-004 Post Filter 12.5x20 2-Pack is a replacement post filter for the 20x25 and 20x12.5 F300E and F50F air cleaners. The Honeywell post filter increases the efficiency of your Honeywell electronic air purifier model and has only


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Honeywell 50000293-004 Post Filter 12.5x20 2-Pack
Our Price: $40.09
Retail: $44.99
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Lennox X6667 MERV 11 Air Filter Media Replacement
(X6667)

The Lennox X6667 MERV 11 Air Filter Media Replacement is a replacement air filter for Lennox Healthy Climate PureAir PCO-20 air cleaners. This box media utilizes a MERV 11 pleated filter that captures particles as small as 0.3 microns in size.


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Lennox X6667 MERV 11 Air Filter Media Replacement
Our Price: $31.20
Retail: $39.99
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Lennox X8788 MERV 16 PureAir Filter Replacement
(X8788)

The Lennox X8788 MERV 16 filter is made for your PureAir PC020-28 unit. Also known as a healthy climate filter, this pleated filter will remove harmful airborne contaminants from your home. If you or your family members suffer from asthma or allergi

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Lennox X8788 MERV 16 PureAir Filter Replacement
Our Price: $102.67
Retail: $109.99
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FF 30900 Filter Replacement
(FF 30900)

The FF 30900 Filter Replacement is a compatible version of the Hunter 30900 HEPAtech Purifier Filter.


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FF 30900 Filter Replacement
Our Price: $15.99
Retail: $24.99
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Skuttle Air Cleaner Filter 25x16x5 000-0448-001
(000-0448-001)

Skuttle 000-0448-001 Air Cleaner Filters measure 25"x16"x5", & effectively reduce airborne particles such as pet dander, mold spores, dust, dust mites, pollen and other allergens from your indoor environment.


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Skuttle Air Cleaner Filter 25x16x5 000-0448-001
Our Price: $22.26
Retail: $24.99
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Honeywell FC100A1037 Compatible MERV 13 2-PACK
(FFC20255HONM13)

The Honeywell 20x25x5 Filter FC100A1037 is a compatible media air filter with a MERV 13 energy efficiency rating. This replacement filter is also known as part number FFC20255HONM13.


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Honeywell FC100A1037 Compatible MERV 13 2-PACK
Our Price: $82.99
Retail: $90.00
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Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
(FFC20205TABM13)

The Trion 20x20x5 Air Bear Furnace Filter is the compatible version of the genuine Trion Air Bear Media Filter 20x20x5, 255649-103.


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Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
Our Price: $59.99
Retail: $80.00
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Lennox X8790 MERV 16 Air Filter Replacement
(X8790)

The Lennox X8790 MERV 16 Air Filter Replacement is a replacement air filter for the Lennox PCO14-23 PureAir Air Filtration System. This furnace filter measures approximately 20" x 21" x 5" and features a MERV 16 rating. A higher MERV rating results


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Lennox X8790 MERV 16 Air Filter Replacement
Our Price: $96.00
Retail: $229.00
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Whirlpool 1183051, 1187018 HEPA Filter
(1183051)

The Whirlpool Whispure 1183051 HEPA Filter fits Whirlpool Model AP250. The 1183051 helps effectively reduce airborne irritants such as smoke, dust, pet dander, pollen, mold spores, and fabric fibers.


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Whirlpool 1183051, 1187018 HEPA Filter
Our Price: $69.99
Retail: $79.99
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Whirlpool 8171433 Air Pre-Filter (Small)
(8171433)

The Whirlpool 8171433 Activated Carbon Air Pre-Filter fits Whirlpool Model AP150 and AP250. This pre-filter pre-cleans the air, reduces odors and filtering out larger particles therefore extending the life of your HEPA filter. Four pack.


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Whirlpool 8171433 Air Pre-Filter (Small)
Our Price: $25.99
Retail: $30.00
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Trane BAYFTAHEXM2 Expandable Replacement Media
(BAYFTAHEXM2)

The Trane BAYFTAHEXM2 Expandable Replacement Media is a set of two furnace air filters that require the use of a Retrofit Frame Kit to be operable. This Trane Perfect Fit filter measures approximately 20 inches in length and 5 inches in thickness. T


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Trane BAYFTAHEXM2 Expandable Replacement Media
Our Price: $69.20
Retail: $79.99
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Filters Fast MERV 8 Pleated Filters 6 PACK
(FFM8Pleat)

With an initial pressure drop of around .17, these Filters Fast 2" MERV 8 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 8 Pleated Filters 6 PACK
Our Price: $49.99
Retail: $69.99
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Filters Fast - Air Filters

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