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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 X8790 PCO14-23 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 PCO14-23 MERV 16 Air Filter Replacement
Our Price: $149.95
Retail: $228.99
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FiltersFast FFC16253TABM8 Trion 255649-101 16x25x3 Filter 3-Pack
(FFC16253TABM8)

The FiltersFast FFC16253TABM8 Trion 255649-101 MERV 8 16x25x3 Filter compatible MERV 8 filter replacement. This Air Bear Cub Filter is also known as part number FFC16253TABM8.


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FiltersFast FFC16253TABM8 Trion 255649-101 16x25x3 Filter 3-Pack
Our Price: $44.95
Retail: $59.99
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Trane BAYFTFR17M2 Air Filter 17.5x27x5
(BAYFTFR17M2)

The Trane BAYFTFR17M2 has nominal dimensions of 17 1/2 inches x 27 inches x 5 inches.


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Trane BAYFTFR17M2 Air Filter 17.5x27x5
As Low As: $59.99
Retail: $69.99
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FiltersFast D13-C Replacement for Honeywell HAC-506 2-Pack
(D13-C)

The FiltersFast D13-C compatible humidifier filters comes in a convenient 2-Pack and fits select humidifier models including Duracraft.


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FiltersFast D13-C Replacement for Honeywell HAC-506 2-Pack
Our Price: $12.99
Retail: $14.99
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FiltersFast FFC24265TRN Replacement for Trane PerfectFit BAYFTFR24M 24.5x27x5 2-Pack
(FFC24265TRN)

These FiltersFast Brand Trane Perfect Fit BAYFTFR24M 24.5x27x5 MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These FiltersFast Air Filters specifically replace Trane part number BAYFTFR24M, which is a 24.5x27x5


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FiltersFast FFC24265TRN Replacement for Trane PerfectFit BAYFTFR24M 24.5x27x5 2-Pack
Our Price: $74.95
Retail: $110.99
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FiltersFast A12PR Replacement for Aprilaire 12 Humidifier Filter
(A12PR)

The FiltersFast A12PR Humidifier Water Panel Evaporator Replacement is a heavy-duty metal water pad for several AprilAire, Chippewa and Walton humidifier models.


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FiltersFast A12PR Replacement for Aprilaire 12 Humidifier Filter
As Low As: $11.95
Retail: $16.99
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GeneralAire GA23 Humidifier Vapor Pad Replacement 10-Pack
(7923)

Humidifier vapor pads, sometimes called humidifier filter pads or vapor pad replacements, are one of the most important elements in a humidifier. This is because they are the key component in creating the vapor that re-introduces moisture into dry a


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GeneralAire GA23 Humidifier Vapor Pad Replacement
Our Price: $159.90

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FiltersFast DSG401M11FF Replacement For Space-Gard SG4PR-B, Aprilaire 401 Filter - 2-Pack
(SG4PR-B)

The Space-Gard MERV 11 Compatible Media Filter 2-Pack is a two pack of compatible replacement air filters for the Aprilaire Model 2400 Air Cleaner. Model #401.


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FiltersFast DSG401M11FF Replacement For Space-Gard SG4PR-B, Aprilaire 401 Filter - 2-Pack
As Low As: $44.95
Retail: $61.99
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Aprilaire 1413 Air Filter Performance Upgrade Kit
(Aprilaire 1413)

The Aprilaire 1413 is an Aprilaire Upgrade Kit that allows owners of Spacegard 2400 and Aprilaire 2400 air purifiers to use the MERV 13 Aprilaire 413 Filter instead of their MERV 10 Aprilaire 401 Filter. This improves air cleaning performance by 65 p


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Aprilaire 1413 Air Filter Performance Upgrade Kit
Our Price: $69.95
Retail: $75.99
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BestAir A35WPR Replacement For Lennox WB2-17 WB2-18
(WB2-17 WB2-18 R)

The Lennox WB2-17 WB2-18 Humidifier Water Panel Filter will help keep your humidifier running at its best. This humidifier panel measure 10" x 13 1/4" x 1.5" inches and the honeycomb design will trap mineral pollutants keeping them out of your humid


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BestAir A35WPR Replacement For Lennox WB2-17 WB2-18
As Low As: $12.45
Retail: $15.99
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BestAir A35WPR Replacement For Carrier P1103545
(Carrier P1103545 R)

The Carrier P1103545 Humidifier Water Panel Filter is the correct compatible replacement for: Several models of Carrier furnace humidifiers This humidifier water panel filter measures approximately 10" x 13 1/4" x 1 1/2". This Carrier water pa


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BestAir A35WPR Replacement For Carrier P1103545
As Low As: $12.45
Retail: $15.99
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3M Filtrete 600 MPR Pollen Air Filter (Green)
(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 "Green Filter" features electrostatically charged fibers and is ideal for high-velocity..


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3M Filtrete 600 MPR Pollen Air Filter (Green)
Our Price: $19.99
Retail: $24.99
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GeneralAire HF500 HEPA Filter for AC500
(4620)

The GeneralAire HF500 HEPA Filter for AC500 is a replacement air filter for the GeneralAire Model AC500 Air Cleaner. This HEPA filter is 99.7% efficient at reducing airborne particles down to 0.30 microns. This HEPA air filter, also known as the RHF

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GeneralAire HF500 HEPA Filter for AC500
Our Price: $129.95
Retail: $149.99
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Lennox X8789 PureAir PCO16-28 MERV 16 Filter Genuine Lennox Part
(X8789)

The Lennox X8789 MERV 16 Filter Media Replacement is the correct replacement for any HVAC system that requires a 16" x 26" x 5" filter. This Lennox Healthy Climate filter has an efficiency rating of MERV 16, the highest efficiency rating.

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Lennox X8789 PureAir PCO16-28 MERV 16 Filter Genuine Lennox Part
Our Price: $144.95
Retail: $226.99
You Save 36%!

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TopTech TT-FM-1625 Techpure 16x25x4 MERV 11 Filter
(TT-FM-1625)

The TopTech TT-FM-1625 Techpure 16x25x4 MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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TopTech TT-FM-1625 Techpure 16x25x4 MERV 11 Filter
Our Price: $39.95
Retail: $45.99
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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: $28.99
Retail: $32.99
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Trion Air Bear Media AC Filter 20x20x5 4-Pack
(255649-103 4pack)

The Trion Air Bear Media AC Filter 20x20x5 part number 255649-103 is a genuine Trion Air Bear pleated media A/C filter. The 255649103 can be used in Trion 20" x 20" Models including model number 455604-019. Replaces 229990-103 and 248713-103.

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Trion Air Bear Media AC Filter 20x20x5 4-Pack
Our Price: $99.95
Retail: $109.99
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Trion Air Bear 259112-105 Cub Filter 16x25x5 MERV 11
(259112-105)

This Trion Air Bear 259112-105 Filter is the correct replacement for the following air cleaning system: Trion Air Bear Duct Mount Media Air Cleaner


Out of stock
Trion Air Bear 259112-105 Cub Filter 16x25x5 MERV 11
Our Price: $36.95
Retail: $39.99
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Lennox X0444 MERV 10 Pleated Furnace Filter Media PMAC-12C
(X0444)

The Lennox X0444 MERV 10 Pleated Furnace Filter Media is a filter for your HVAC system. This furnace filter media is known as the x0444 and uses a MERV 10 air filter.The MERV 10 rating will provide your home with significant air cleaning capability


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Lennox X0444 MERV 10 Pleated Furnace Filter Media PMAC-12C
Our Price: $49.95
Retail: $57.99
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FiltersFast FF 30930 Replacement for Hunter 30930
(30930)

The FiltersFast FF 30930 is the compatible replacement for the Hunter 30930 HEPAtech Purifier Filter.


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FiltersFast FF 30930 Replacement for Hunter 30930
Our Price: $29.99
Retail: $39.99
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Honeywell FC40R1102 Return Grille Filter-14x14x3
(FC40R1102)

The Honeywell FC40R1102 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the AC filter. Nominal Dimension 14x14x4. Genuine Honeywell Part.


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Honeywell FC40R1102 Return Grille Filter-14x14x3
Our Price: $44.95
Retail: $49.99
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FiltersFast FFC20255HONM8 Replacement for Honeywell 20x25x5 FC100A1037 2-Pack
(FFC20255HONM8)

The FilterFast Brand Honeywell 20x25x5 FC100A1037 2-Pack is the compatible version of the OEM Honeywell 20x25x5 Air Filter FC100A1037.


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FiltersFast FFC20255HONM8 Replacement for Honeywell 20x25x5 FC100A1037 2-Pack
Our Price: $44.95
Retail: $59.99
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FiltersFast A10PR R Replacement for Lennox WB2-1
(Lennox WB2-12 R)

The FiltersFast A10PR R Humidifier Water Panel Filter is the correct replacement for the Lennox WB2-1 and the following filters:


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FiltersFast A10PR R Replacement for Lennox WB2-1
As Low As: $8.95
Retail: $19.99
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Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter-17.5x27x1
(BAYFTFR17P4A)

The Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter - 17.5x27x1 fits several air cleaner models manufactured by Trane. This Trane Perfect Fit filter is 1 inch and pleated for maximum purification of your air.


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Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter-17.5x27x1
As Low As: $24.95
Retail: $29.99
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Honeywell FC40R1169 14x30 Return Grille Air Filter
(FC40R1169)

The Honeywell FC40R1169 14x30 Return Grille Air Filter is a replacement air filter that fits most return filter grilles. This return air filter grille measures 14" x 30" and features a MERV 10 rating for the reduction of airborne contaminants.


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Honeywell FC40R1169 14x30 Return Grille Air Filter
Our Price: $44.95
Retail: $59.99
You Save 25%!

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Filters Fast - Air Filters

" Just to express my complete satisfaction with your ordering process and, of course, great pricing. When I need a replacement of refrigerator or HVAC filters, I'll be contacting you again. " - Frank, Corona, CA
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