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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:


FiltersFast D13-C Replacement for Honeywell HAC-506 2-Pack

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Retail: $14.99

Our Price: $12.99

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BestAir R14ALLM Replacement For Kenmore 83156 2-Pack
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Retail: $24.99

Our Price: $19.95

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

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Carrier FILCCCAR0016 Air Purifier Filter
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Retail: $49.99

Our Price: $39.99

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FiltersFast 1" Air Filters MERV 11 Replacement for Aerostar 1" MERV 11 6-Pack

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Retail: $77.99

Our Price: $69.95

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FiltersFast 1" Air Filters MERV 8 Replacement for Aerostar Air Filters 6-Pack

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Retail: $66.99

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FiltersFast E2R Replacement For Kenmore 14909 Filters 2-Pack
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Retail: $22.99

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Aprilaire 1413 Air Filter Performance Upgrade Kit
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Retail: $75.99

Our Price: $69.95

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Honeywell Enviracaire HC22A1007 Filter - HE220a
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Retail: $24.99

Our Price: $18.95

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Lennox 94X98 HEPA 20 Filter System Carbon Canister
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within the continental U.S.


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Ships in 4 to 5 business days.

Retail: $140.99

Our Price: $106.95

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BestAir A35PR Replacement for SPACE-GARD 35
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Retail: $14.99

As Low As: $9.95

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Duracraft 5010 Replacement for Honeywell 10590 HEPA Filter
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Retail: $59.99

Our Price: $39.99

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FiltersFast FFC20205TABM8 20x20x5 Replacement for Skuttle 000-0448-003 2-Pack

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Retail: $50.99

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Lennox X8345 PureAir PCO-20C MERV 16 Upgrade Kit
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within the continental U.S.


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Ships in 1 to 2 business days.

Retail: $389.99

Our Price: $339.95

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FiltersFast A10PR R Replacement for Totaline P110-0007
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Retail: $19.99

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Lennox X6666 MERV 16 Pleated Air Filter Media for PCO-12C 17x26x4
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Retail: $128.99

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Crane HS-1934 Replacement Air Purifier Filter Set
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Retail: $34.99

Our Price: $29.95

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Totaline P102-2020 20x20 MERV 11 Filter

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Retail: $48.99

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FiltersFast 1" Air Filters MERV 8 Replacement for Nordic Pure MERV 8 6-Pack

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Retail: $66.99

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Honeywell FC100A1029 Replacement for Honeywell FC35A1001 - 16x25x5
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Retail: $46.99

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FiltersFast FFC245275TRN Replacement for Trane BAYFTFR24M2, 24.5x27x5 - 2-Pack
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Retail: $89.99

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Filtrete Home Odor Furnace Air Filter- 20 x 20 x 1
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Retail: $29.99

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Filtrete 1 Inch Carbon Odor Air Filter 14 x 25 x 1 4-Pack
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within the continental U.S.

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Our Price: $99.80

American Metal OEMRCR0613 Replacement For GE WB02X10733 Microwave Filter

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Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
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Retail: $71.99

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