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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?
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?
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Air Filters full product list:


Lennox X2678 HEPA 20 Charcoal Carbon Filter

In Stock!
Ships in 2 to 3 business days.

Retail: $44.99

Our Price: $39.95

Save 11%!

Carrier P1101045 Humidifier Water Panel Filter
FREE SHIPPING!

within the continental U.S.

Special Order.
Ships in 4 to 5 days.

Our Price: $89.50

FiltersFast A10PR R Replacement for Bryant P110-0007
In Stock!
Ships in 1 business day

Retail: $19.99

As Low As: $8.95

Save 55%!

GeneralAire 6FM2020 MERV 11 Replacement For GeneralAire 5FM2020
In Stock!
Ships in 1 business day

Retail: $49.99

As Low As: $35.95

Save 28%!

AirCare 1050 Evaporative Humidifier Air Filter 6-Pack
Special Order.
Ships in 4 to 5 days.

Our Price: $59.94

Trion Air Bear 255649-101 Replacement For Trion Air Bear AB316258
In Stock!
Ships in 1 business day

Retail: $34.99

As Low As: $25.45

Save 27%!

Lennox X8346 PureAir PCO-12C MERV 16 Maintenance Kit 17x26x4
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 3 to 4 business days.

Retail: $214.99

Our Price: $189.95

Save 12%!

Duracraft 5010 Replacement for Honeywell 10590 HEPA Filter
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Ships in 1 business day

Retail: $59.99

Our Price: $39.99

Save 33%!

GeneralAire 4366 Replacement for GeneralAire 4352 - GA100A29
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Ships in 1 business day

Retail: $59.99

Our Price: $38.99

Save 35%!

BestAir D18-C Replacement for Honeywell HAC-500 Humidifier Filter
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Ships in 1 business day

Retail: $14.99

As Low As: $7.95

Save 47%!

Lennox X4137 HEPA-20 92017-11 Carbon PreFilter Replacement

In Stock!
Ships in 3 to 4 business days.

Retail: $46.99

Our Price: $39.95

Save 15%!

Lennox 92X17 HEPA Filter Cartridge Replacement
FREE SHIPPING!

within the continental U.S.

Out of stock

Retail: $198.99

Our Price: $174.95

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FiltersFast ROHAPF96M Replacement for Holmes HAPF96

In Stock!
Ships in 2 to 3 business days.

Retail: $14.99

Our Price: $12.95

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FiltersFast ROHAPF60M Replacement For Bionaire HAPF60 R Filter 2-Pack

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Ships in 2 to 3 business days.

Retail: $19.99

Our Price: $14.95

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BestAir R14ALLM Replacement For Kenmore 83237 2-Pack
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Ships in 1 business day

Retail: $24.99

Our Price: $19.95

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BestAir R14ALLM Replacement For Kenmore 83156 2-Pack
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Ships in 1 business day

Retail: $24.99

Our Price: $19.95

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BestAir R14ALLM Replacement For Kenmore 83157 2-Pack
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Ships in 1 business day

Retail: $24.99

Our Price: $19.95

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Carrier 49BB680044 Humidifier Filter Replacement
Special Order.
Ships in 4 to 5 days.

Retail: $79.99

Our Price: $69.99

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3M Filtrete 300 MPR Basic Dust & Lint Air Filter
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Our Price: $71.70

Hunter 30931 HEPAtech Purifier Filter
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Ships in 4 to 5 days.

Retail: $59.99

Our Price: $44.95

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FiltersFast FF 30936 Replacement for Hunter 30936
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Retail: $49.99

Our Price: $34.95

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American Metal Filter Replacement For GE WB02X10776

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Ships in 4 to 5 business days.

Retail: $19.99

Our Price: $14.99

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Carrier 356066-0602 Pre Filter for EACBAXCC0014 2-Pack
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Retail: $78.95

Our Price: $69.95

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Aprilaire 1200 Commercial Humidifier Filter Pad Water Panel
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within the continental U.S.

Special Order.
Ships in 4 to 5 days.

Retail: $90.99

Our Price: $79.95

Save 12%!

Universal Carbon Range Hood Filter RYM1518C - Trim to Fit

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Ships in 1 to 2 business days.

Retail: $34.99

Our Price: $29.99

Save 14%!

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