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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:


BestAir R14ALLM Replacement For Kaz Premium 2-Pack
In Stock!
Ships in 1 business day

Retail: $24.99

Our Price: $19.95

Save 20%!

Holmes HAPF31 Air Purifier Carbon PreFilter - 2 Pack

In Stock!
Ships in 4 to 5 business days.

Retail: $19.99

Our Price: $15.95

Save 20%!

BestAir D19-C Replacement for Honeywell HC-818 Humidifier Filter
In Stock!
Ships in 1 business day

Retail: $19.99

Our Price: $14.95

Save 25%!

FiltersFast 14ALL Replacement For Bemis 1104 Air Purifier Carbon PreFilter
In Stock!
Ships in 1 business day

Retail: $19.99

As Low As: $11.95

Save 40%!

FiltersFast HAPF600 R Replacement for Bionaire HAPF600CS R
In Stock!
Ships in 1 business day

Retail: $49.99

Our Price: $21.95

Save 56%!

BestAir D19-C Replacement for Honeywell HC-819 Humidifier Filter
In Stock!
Ships in 1 business day

Retail: $19.99

Our Price: $14.95

Save 25%!

FiltersFast ROHAPF60M Replacement For Holmes HAPF60 2-Pack

In Stock!
Ships in 2 to 3 business days.

Retail: $19.99

Our Price: $14.95

Save 25%!

Holmes HAPF92 Air Purifier Carbon PreFilter

In Stock!
Ships in 2 to 3 business days.

Our Price: $15.98

Carrier 318501-761 Humidifier Water Filter Pad
Special Order.
Ships in 11 to 12 days.

Retail: $34.99

Our Price: $29.95

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Carrier P1101045 Humidifier Water Panel Filter
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within the continental U.S.

Special Order.
Ships in 15 to 16 days.

Our Price: $89.50

Lennox 69H85 Whole House Air Purifier Filter
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $24.99

Our Price: $21.99

Save 12%!

FiltersFast A12WPR Replacement for Aprilaire 12 Humidifier Panel

Out of stock

Retail: $19.99

As Low As: $12.95

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Essick Air 1103 HEPA Filter Replacement
FREE SHIPPING!

within the continental U.S.

Special Order.
Ships in 10 to 11 days.

Our Price: $185.97

AirCare 1050 Evaporative Humidifier Air Filter 6-Pack
Special Order.
Ships in 11 to 12 days.

Our Price: $59.94

Lennox X6666 MERV 16 Pleated Air Filter Media for PCO-12C 17x26x4
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $128.99

Our Price: $109.95

Save 15%!

Lennox X8303 MERV 10 Expandable Filter Kit

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Ships in 6 to 7 business days.

Retail: $68.99

Our Price: $59.99

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Lennox X8304 MERV 10 Expandable Filter Kit
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $119.99

Our Price: $102.99

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Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter
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within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $131.99

Our Price: $109.95

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Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $114.99

Our Price: $94.95

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BestAir A10WPR Replacement for Lennox WB2-12 Humidifier Filter
In Stock!
Ships in 1 business day

Retail: $19.99

As Low As: $13.99

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FiltersFast 5" FFC175275TRN OKGM Air Filter - 2-Pack

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Ships in 1 to 2 business days.

Retail: $104.99

Our Price: $71.99

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Hoover PowerDrive WindTunnel HEPA Vacuum Filter

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Ships in 3 to 4 business days.

Retail: $19.99

Our Price: $12.95

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American Metal Filter Replacement For GE WB02X10776

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Ships in 11 to 12 business days.

Retail: $19.99

Our Price: $14.99

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Holmes HAPF92 Carbon Odor Pre-Filter 2-Pack

In Stock!
Ships in 2 to 3 business days.

Our Price: $15.98

Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
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within the continental U.S.


In Stock!
Ships in 19 to 20 business days.

Retail: $517.95

Our Price: $449.95

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