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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:


Lennox X0584 MERV 11 Pleated Media Filter BMAC-14CE
(X0584)

The Lennox X0584 MERV 11 Pleated Media Filter is a pleated air filter that replaces the filter media in the Lennox BMAC-14CE box media air cleaner and also fits inside Lennox the EAC012 and EAC0-14 model air cleaner cabinets in place of its electron


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Lennox X0584 MERV 11 Pleated Media Filter BMAC-14CE
As Low As: $33.95
Retail: $81.99
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Trion Air Bear 259112-101 Cub Filter 16x25x3 MERV 11
(259112-101)

The 259112-101 is the correct filter replacement for all air cleaning sytems requiring a 16" x 25" x 3" air filter. The Trion Air Bear Cub Filter is a genuine Air Bear filter.


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Trion Air Bear 259112-101 Cub Filter 16x25x3 MERV 11
Our Price: $27.99
Retail: $31.99
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FiltersFast 1" Air Filters MERV 13 Replacement for Nordic Pure 1" MERV 12 6-Pack
(FFM13 6pk ND)

Make the air you breathe inside your home the best it can be with this affordable and convenient 6-pack of 1" MERV 13 air filters from FiltersFast.


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FiltersFast 1" Air Filters MERV 13 Replacement for Nordic Pure  1" MERV 12 6-Pack
Our Price: $65.95
Retail: $70.99
You Save 7%!

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BestAir CBW9 Replacement For Bionaire 900 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


In stock! Ships in 1 business day.
BestAir CBW9 Replacement For Bionaire 900 2-Pack
As Low As: $13.99
Retail: $16.99
You Save 18%!

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Honeywell FC40R1037 12x24 Return Air Grille Filter
(FC40R1037)

The Honeywell FC40R1037 Return Aire Grille Filter is a high efficiency, replacement for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x24x4. Genuine Honeywell Part.


In Stock! Ships in 9 to 10 business days.
Honeywell FC40R1037 12x24 Return Air Grille Filter
Our Price: $32.99
Retail: $44.99
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FiltersFast FF16255X6670M11 Replacement for Bryant-Carrier FILXXCAR0016 MERV11 - 2-Pack
(FILXXCAR0016)

The FiltersFast Brand Bryant-Carrier FILXXCAR0016 MERV11 2pack replacement combines the strength of a continuous hydrophobic polyolefin fibers media and increased surface area that results in a reduction of airborne pollutants.


In Stock! Ships in 12 to 13 business days.
FiltersFast FF16255X6670M11 Replacement for Bryant-Carrier FILXXCAR0016 MERV11 - 2-Pack
Our Price: $45.95
Retail: $89.99
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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: $22.99
Retail: $29.99
You Save 23%!

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Honeywell TRN2321T1 Replacement for Trane BAYFTAH23M, 23.5x21x5 Perfect Fit - 3-Pack
(TRN2321T1)

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.
Honeywell TRN2321T1 Replacement for Trane BAYFTAH23M, 23.5x21x5 Perfect Fit - 3-Pack
Our Price: $150.00
Retail: $175.99
You Save 15%!

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FiltersFast FFC16253TABM13 Replacement for Trion 16x25x3 Air Bear MERV13 3-Pack
(FFC16253TABM13)

The FiltersFast Brand Trion 16x25x3 Air Bear MERV13 3-Pack Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 16x25x3, 255649-101.


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FiltersFast FFC16253TABM13 Replacement for Trion 16x25x3 Air Bear MERV13 3-Pack
Our Price: $85.00
Retail: $99.99
You Save 15%!

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BestAir 24000 R Replacement for Honeywell 24000
(24000)

The BestAir 24000 R HEPA Air Filter is the compatible replacement for the Honeywell 24000 HEPA Air Filter.


Out of stock
BestAir 24000 R Replacement for Honeywell 24000
Our Price: $57.99
Retail: $69.99
You Save 17%!

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FiltersFast DCA11.0420202PFF Replacement for Bryant, Carrier FILXXFNC0021 Filter - 2-Pack
(FILXXFNC0021)

FiltersFast Brand Bryant,Carrier FILXXFNC0021 Filter


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FiltersFast DCA11.0420202PFF Replacement for Bryant, Carrier FILXXFNC0021 Filter - 2-Pack
Our Price: $56.99
Retail: $69.99
You Save 19%!

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Top Tech TT-FM-1620 TechPure 16x20x4 MERV 11 Filter
(TT-FM-1620)

The TopTech TechPure TT-FM-1620 16" x 20" x 4" MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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Top Tech TT-FM-1620 TechPure 16x20x4 MERV 11 Filter
Our Price: $31.95
Retail: $39.99
You Save 20%!

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Honeywell HC-888 Replacement Humidifier Filter
(HC-888)

The Honeywell HC-888 Humidifier Filter Replacement is a genuine Honeywell filter. This HC888 humidifier filter reduces waterborne contaminants and minerals in your water.


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Honeywell HC-888 Replacement Humidifier Filter
Our Price: $13.99
Retail: $15.99
You Save 13%!

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Honeywell FC40R1060 16x25 Return Air Grille Filter
(FC40R1060)

Honeywell FC40R1060 16x25 Return Air Grille AC Filter is a high efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x25x4.


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Honeywell FC40R1060 16x25 Return Air Grille Filter
Our Price: $35.99
Retail: $49.99
You Save 28%!

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Filtrete Odor Reduction Air Filter - 14 x 24 x 1
(Filtrete-Odor-14241)

The Filtrete Odor Reduction Air Filter - 14 x 24 x 1 is constructed with activated carbon to remove common odors from your home, including pet, smoke, cooking, mildew, and cleaning chemicals. In addition to creating a more breathable atmosphere, thi


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Filtrete Odor Reduction Air Filter - 14 x 24 x 1
Our Price: $22.66
Retail: $179.99
You Save 87%!

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Lennox X8312 HCXF16-16 MERV 16 Expandable Filter 16x25x5
(X8312)

The Lennox X8312 HCXF16-16 MERV 16 Expandable Filter 16x25x5 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.

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Lennox X8312 HCXF16-16 MERV 16 Expandable Filter 16x25x5
As Low As: $88.95
Retail: $124.99
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Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit
(X8345)

The Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit, part number x8345 is meant for your Lennox PureAir PCO-20C air filtration unit. This MERV 16 filter measures 21" x 26" x 4" inches.

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Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit
Our Price: $280.95
Retail: $343.99
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Honeywell 50000293-002 Post Filter for F300 2-Pack 2-Pack
(50000293-002)

The Honeywell 50000293-002 is the correct replacement for the following air cleaners: Honeywell F300 Series Honeywell F50F Series Honeywell F58F Series The Honeywell 50000293-002 Post Filter for F50F & F300 measures 16 inches by 12 1/2 inche


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Honeywell 50000293-002 Post Filter for F300 2-Pack
Our Price: $46.08

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Honeywell FC40R1045 14x25 Return Air Grille Filter
(FC40R1045)

Honeywell FC40R1045 14x25 Return Air Grille AC Filter is a high efficiency, replacement for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 14x25x4. Genuine Honeywell Part.


Out of stock
Honeywell FC40R1045 14x25 Return Air Grille Filter
Our Price: $30.99
Retail: $44.99
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Lennox X0581 MERV 10 Pleated Furnace Filter Media
(X0581)

This Lennox X0581 MERV 10 Pleated Furnace Filter Media provides high efficiency filtration. This Merv 10 furnace filter requires no assembly or combs.


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Lennox X0581 MERV 10 Pleated Furnace Filter Media
Our Price: $35.95
Retail: $41.99
You Save 14%!

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Honeywell 203369 Pre-Filter 12.5 x 20 x 11/32 2-Pack 2-Pack
(203369)

The Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack is a replacement pre-filter for the Honeywell model F50 and F300 air cleaners. This Honeywell air filter traps larger particles in your air to help improve your overall indoor air quality and incre


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Honeywell 203369 Pre-Filter 12.5 x 20 x 11/32 2-Pack
Our Price: $49.32

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3M Filtrete 600 MPR Pollen Air Filter (Green) 6-Pack
(Dust and Pollen 6-Pk)

The 3M Filtrete Dust & Pollen Furnace Filter is an electrostatically charged furnace filter ideal for high velocity HVAC systems. 3M Filtrete filters are an economical upgrade from cheap one month filters.


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3M Filtrete 600 MPR Pollen Air Filter (Green) 6-Pack
Our Price: $63.25
Retail: $73.99
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Lennox X5424 PMAC-20C MERV 16 25x20x6 Furnace Filter Media
(X5424)

This Lennox X5424 MERV 16 Pleated Furnace Filter Media needs to be replaced every 12 months. The Lennox MERV 16 Filter is a genuine Lennox Healthy Climate boxed media air cleaner.

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Lennox X5424 PMAC-20C MERV 16 25x20x6 Furnace Filter Media
Our Price: $95.95
Retail: $122.99
You Save 22%!

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BestAir R14ALLM Replacement For Honeywell HRF-AP1 2-Pack
(HRF-AP1 1 R)

The Honeywell HRF-AP1 Carbon PreFilter 2-Pack is a replacement carbon pre-filter for all models of Honeywell Round Air, Honeywell Quietcare, and Honeywell SilentComfort air purifiers. This two pack of carbon filters is cut-to-fit, reduces common odo


In Stock! Ships in 15 to 16 business days.
BestAir R14ALLM Replacement For Honeywell HRF-AP1 2-Pack
Our Price: $18.99
Retail: $21.99
You Save 14%!

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FiltersFast FFC20205HONM8 Replacement for Honeywell FC100A1011 - 20x20x5 2-Pack
(FFC20205HONM8)

FiltersFast Brand Honeywell 20x20x5 FC100A1011 2-Pack 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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FiltersFast FFC20205HONM8 Replacement for Honeywell FC100A1011 - 20x20x5 2-Pack
Our Price: $45.90
Retail: $52.99
You Save 13%!

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Filters Fast - Air Filters

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