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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


Lennox Foam Humidifier Filter - Lennox LX18
(LX18)

The Lennox Foam Humidifier Filter LX18 is a replacement foam filter for the Lennox WSI-18 furnace mount humidifier. This two pack of Lennox foam prefilters measures 14" x 12 3/4" x 1/8" and reduces mineral pollutants within your WS1-18 humidifie


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Lennox Foam Humidifier Filter - Lennox LX18
Our Price: $37.98

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Filters Fast 24x30x5 MERV 13 Return Grille Filter
(FFRAG13-24305)

The Filters Fast air furnace filter measures 24x30x5 inches. This filter fits your 1" residential wall or ceiling mount return grill. Although this Filters Fast filter is 5" deep, it fits your standard 1" size 24x30x5 and then extends 4 inches into


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Filters Fast 24x30x5 MERV 13 Return Grille Filter
Our Price: $56.99
Retail: $62.99
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General Aire Air Cleaner Indicator Light 58-0123
(4788)

The General Aire Air Cleaner Indicator Light 58-0123 is a replacement indicator light for the GeneralAire GA52F32 Grill Mount Air Cleaner. The GeneralAire 58-0123 indicator light is installed next to the C5-0223 on/off switch and lights up through a


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General Aire Air Cleaner Indicator Light 58-0123
Our Price: $29.99
Retail: $39.99
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General Aire Air Cleaner Fan Blade C5-0710
(4705)

The General Aire Air Cleaner Fan Blade C5-0710 fits the following models of air cleaners: SSCB15-WHT SSCB15-W-R This GeneralAire air cleaner part is the air cleaner's fan blade. The GeneralAire air cleaner fan blade C5-0710 is also known as G

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General Aire Air Cleaner Fan Blade C5-0710
Our Price: $149.99
Retail: $199.99
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General Aire Air Cleaner Safety Interlock C5-0202
(4713)

The General Aire Air Cleaner Safety Interlock C5-0202 is a replacement safety interlock for the GeneralAire SSCB15W-R and SSCB15-WHT Electronic Air Cleaners. The GeneralAire 4713 safety interlock switch is a vital electronic component of your Genera


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General Aire Air Cleaner Safety Interlock C5-0202
Our Price: $39.99
Retail: $49.99
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General Aire Air Cleaner Indicator Light C5-0113
(4714)

The General Aire Air Cleaner Indicator Light C5-0113 is a replacement indicator light for the GeneralAire Model SSCB7 and SSCB15 Electronic Air Cleaners. The GeneralAire C5-0113 indicator light is installed next to the on/off switch and is a vital e


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General Aire Air Cleaner Indicator Light C5-0113
Our Price: $29.99
Retail: $39.99
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General Aire Contact Assembly C5-0621
(4706)

The General Aire Contact Assembly C5-0621 fits the following models of air cleaners: GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This GeneralAire part 4706 is the air cleaner's contact assembly. The GeneralAire contact assembly C5-0621 is al


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General Aire Contact Assembly C5-0621
Our Price: $29.99
Retail: $39.99
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General Aire Intake Grill C5-0615
(4707)

The General Aire C5-0615 Intake Grill is a replacement intake grill that is attached to the external cover on GeneralAir SSCB15-X air cleaner systems. Also known as part 4707 or EACCM1305.


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General Aire Intake Grill C5-0615
Our Price: $79.99
Retail: $89.99
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General Aire 3-Position Switch -Gray- H9-0220
(4717)

The General Aire 3-Position Switch -Gray- H9-0220 fits the following air cleaners: GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R This GeneralAire part 4717 is the air cleaner's 3-position switch and


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General Aire 3-Position Switch -Gray- H9-0220
Our Price: $49.99
Retail: $59.99
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General Aire 3-Position Switch -Black- H9-0219
(4718)

The GeneralAir H9-0219 Black, 3-Position Switch is a replacement part attached to the power control board & transformer assembly on General Aire SSCB7-X and SSCB15-X Electronic Air Cleaner systems.


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General Aire 3-Position Switch -Black- H9-0219
Our Price: $49.99
Retail: $59.99
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General Aire Fibreboard C5-0526
(4719)

GeneralAire C5-0526 Fiberboard is an internal part attached to the power control board and transformer assembly on GeneralAir SSCB15-X and SSCB7-X Air Cleaner systems.


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General Aire Fibreboard C5-0526
Our Price: $39.99
Retail: $49.99
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General Aire 24V Transformer C5-074D
(4723)

The GeneralAire 4723 fits the following models of air cleaners: GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R The General Aire 24V Transformer C5-074D is one of the air cleaner's electronic parts. T


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General Aire 24V Transformer C5-074D
Our Price: $39.99
Retail: $49.99
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General Aire 24v Transformer R2-053D
(4790)

The General Air 24v Transformer R2-053D is a replacement transformer for the GeneralAire Model GA52F32 Grill Mount Air Cleaner. The GeneralAire R2-053D transformer is installed inside of your GA52F32 air cleaner next to the R2-055D power control boa


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General Aire 24v Transformer R2-053D
Our Price: $24.92
Retail: $29.99
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General Aire On/Off Switch -Black- C5-0221
(4716)

The General Aire On/Off Switch -Black- C5-0221 fits the following models of air cleaners: GeneralAire SSCB7-WHT GeneralAire SSCB7W-R GeneralAire SSCB15-WHT GeneralAire SSCB15W-R The GeneralAire switch C5-0221 is also known as GeneralAire pa


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General Aire On/Off Switch -Black- C5-0221
Our Price: $29.99
Retail: $39.99
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BlueAir 16x25x1 High Efficiency Air Filter Kit
(BCST1625)

The BlueAir 16x25x1 High Efficiency Air Filter Kit includes two MERV 15 air filters, the MX2 Particle Charger, and an Automated Filter Check Timer. This BlueAir filter kit converts your existing central air system into an air purifier. The BlueAir h

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BlueAir 16x25x1 High Efficiency Air Filter Kit
Our Price: $149.95
Retail: $199.99
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BlueAir 14x20x1 MERV 14 Particle Air Filter 2-pack
(1420FF)

The BlueAir 14x20x1 MERV 14 Particle Air Filter 2-pack is a set of two replacement air filters for the BlueAir Whole House Filtration System. This particle filter features a MERV 14 rating for the reduction of airborne pollutants from your air, incl


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BlueAir 14x20x1 MERV 14 Particle Air Filter 2-pack
Our Price: $69.95
Retail: $79.99
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BlueAir 16x20x1 MERV 14 Particle Air Filter 2-pack
(1620FF)

The BlueAir 16x20x1 MERV 14 Particle Air Filter 2-pack fits the BlueAir Whole Filter System and can even replace the regular central air filters in your home. BlueAir filters are constructed with millions of positively charged fibers that specially


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BlueAir 16x20x1 MERV 14 Particle Air Filter 2-pack
Our Price: $69.95
Retail: $79.99
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BlueAir 16x25x1 MERV 14 Particle Air Filter 2-pack
(1625FF)

The BlueAir 16x25x1 MERV 14 Particle Air Filter 2-pack is a set of two air filters compatible for use with the BlueAir Whole Filtration System and even replaces your regular central air filters. BlueAir filters feature millions of positively charged


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BlueAir 16x25x1 MERV 14 Particle Air Filter 2-pack
Our Price: $69.95
Retail: $79.99
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BlueAir 20x20x1 MERV 14 Particle Air Filter 2-pack
(2020FF)

The BlueAir 2020FF is a replacement air filter that fits the following heating and cooling systems: All central heating and air conditioning systems that require a 20 inch x 20 inch x 1 inch filter The BlueAir 20x20x1 MERV 14 Particle Air Filt


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BlueAir 20x20x1 MERV 14 Particle Air Filter 2-pack
Our Price: $69.95
Retail: $79.99
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BlueAir 20x25x1 MERV 14 Particle Air Filter 2-pack
(2025FF)

The BlueAir 2025FF is a replacement air filter that fits the following heating and cooling systems: All central heating and air conditioning systems that require a 20 inch x 25 inch x 1 inch filter The BlueAir 20x25x1 MERV 14 Particle Air Filt


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BlueAir 20x25x1 MERV 14 Particle Air Filter 2-pack
Our Price: $69.95
Retail: $79.99
You Save 13%!

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Austin Air HM405 Allergy Machine - Silver
(HM405 Silver)

The Austin Air HM405 Allergy Machine - Silver is an air cleaner that provides clean air for allergy and asthma sufferers. This Austin Air purifier offers users better sleep and less coughing & sneezing through the reduction of smoke, mold, mildew, f

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Austin Air HM405 Allergy Machine - Silver
Our Price: $574.99
Retail: $599.99
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Hunter 30408 Germicidal Air Purifier
(30408)

The Hunter 30408 is a germicidal air purification system that features: 3 speeds for room sizes up to 8 feet by 10 feet.

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Hunter 30408 Germicidal Air Purifier
Our Price: $129.99
Retail: $199.99
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Hunter 30890 Germicidal Air Purifier
(30890)

The Hunter 30890 Germicidal Air Purifier is an air cleaner that utilizes germicidal technology and HEPA filtration to purify your air. The electrified HEPA filter of the Hunter Total Air Sanitizer traps and kills 99.9% of allergens, germs, bacteria,

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Hunter 30890 Germicidal Air Purifier
Our Price: $199.99
Retail: $299.99
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Hunter Germicidal Air Purifier Oil Rubbed Bronze
(30895)

The Hunter 30895 is a Total Air Sanitizer that sanitizes rooms of the following size: Up to 26 feet by 30 feet The Hunter Germicidal Air Purifier Oil Rubbed Bronze contains a HEPA filter that traps 99.9% of allergens from your indoor air. This

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Hunter Germicidal Air Purifier Oil Rubbed Bronze
Our Price: $159.99
Retail: $199.99
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Trion Air Bear Cub Filter 16x25x3 - 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: $22.95
Retail: $24.95
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Filters Fast - Air Filters

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