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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:


Honeywell FC40R1136 18x24 Return Grille Air Filter

In Stock!
Ships in 19 to 20 business days.

Retail: $59.99

Our Price: $49.95

Save 17%!

Filtrete Home Odor Air Filter - 16 x 20 x 1
In Stock!
Ships in 1 business day

Our Price: $67.96

FiltersFast FFC245275TRN Replacement for Trane BAYFTFR24M2, 24.5x27x5 - 2-Pack
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $79.95

Save 11%!

Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 - 2-Pack
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within the continental U.S.

Special Order.
Ships in 19 to 20 days.

Our Price: $121.90

Filtrete Deep 1500-2 Pack Replacement 4" Air Filter
FREE SHIPPING!

within the continental U.S.

Special Order.
Ships in 14 to 15 days.

Retail: $110.99

Our Price: $79.95

Save 28%!

3M Filtrete Home Odor Furnace Filter - 14 x 30 x 1
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Ships in 1 business day

Retail: $39.99

Our Price: $29.95

Save 25%!

Honeywell FC40R1144 Return Air Filter - 20x24
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Ships in 1 business day

Retail: $69.99

Our Price: $54.95

Save 21%!

Trion Air Bear 447380-010 Right Angle Media Air Cleaner
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within the continental U.S.


In Stock!
Ships in 19 to 20 business days.

Retail: $199.99

Our Price: $179.95

Save 10%!

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%!

Carrier FILCCCAR0024 Air Purifier Filter 2-Pack
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within the continental U.S.

Special Order.
Ships in 15 to 16 days.

Retail: $94.99

Our Price: $79.95

Save 16%!

Carrier 356066-0602 Pre Filter for EACBAXCC0014 2-Pack
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Ships in 19 to 20 days.

Retail: $78.95

As Low As: $59.95

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Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
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Ships in 13 to 14 days.

Retail: $71.99

Our Price: $59.95

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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 10 to 11 days.

Retail: $90.99

Our Price: $79.95

Save 12%!

FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack

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Ships in 1 to 2 business days.

Retail: $69.99

Our Price: $56.95

Save 19%!

Trion 123324-008 Trim T, Trim TX Air Cleaner Prefilter
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Ships in 19 to 20 days.

Retail: $29.99

Our Price: $23.99

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Trion Air Bear 455602-525 Supreme 2000 Air Cleaner Merv 11
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within the continental U.S.


In Stock!
Ships in 19 to 20 business days.

Retail: $199.99

Our Price: $119.95

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Lennox X0581 MERV 10 Pleated Furnace Filter Media

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Ships in 3 to 4 business days.

Retail: $49.99

Our Price: $39.95

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


In Stock!
Ships in 10 to 11 business days.

Retail: $140.99

Our Price: $106.95

Save 24%!

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

As Low As: $8.95

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Lennox 92X08 HEPA 40/60 Foam PreFilter Genuine Lennox Part
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within the continental U.S.

Out of stock

Retail: $89.99

Our Price: $79.95

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FiltersFast A10PR R Replacement for Lasko 5000L
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Ships in 1 business day

Retail: $19.99

As Low As: $8.95

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FiltersFast FFC16265WRMM13 Replacement for White Rodgers F825-0548, 16x26x5 - 2-Pack

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Ships in 1 to 2 business days.

Retail: $99.99

Our Price: $74.95

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FiltersFast FFC24265TRNM13 Replacement for Trane BAYFTFR24M, 24x26x5 Perfect Fit - 2-Pack
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $139.99

Our Price: $84.95

Save 39%!

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