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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 FF4M8-20254, 20x25x4 MERV8 Replacement for GeneralAire FP2025 3-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $59.99

Our Price: $59.95

Save 0%!

GeneralAire 401-13156 MERV 11 Filter Media
In Stock!
Ships in 1 business day

Retail: $69.99

Our Price: $49.95

Save 29%!

FiltersFast MERV 8 Pleated 1" Panel Filter 6-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $69.99

Our Price: $56.95

Save 19%!

Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $114.99

Our Price: $94.95

Save 17%!

Lennox X6669 PCO-20C 21X26X4 Merv 16 Filter Replacement
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $149.99

Our Price: $129.95

Save 13%!

GeneralAire 4367 Replacement for GeneralAire 4354 - GA100A11
In Stock!
Ships in 1 business day

Retail: $45.99

Our Price: $39.99

Save 13%!

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

Retail: $19.99

As Low As: $8.95

Save 55%!

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 HM2PR Replacement for Honeywell 32000146-001
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Ships in 1 business day

Retail: $19.99

As Low As: $12.99

Save 35%!

FiltersFast FFC21235TRNM13 Replacement for Trane BAYFTAH23M, 21x23x5 Perfect Fit
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $139.99

Our Price: $91.95

Save 34%!

Crane HS-1934 Replacement Air Purifier Filter Set

In Stock!
Ships in 3 to 4 business days.

Retail: $34.99

Our Price: $29.95

Save 14%!

Honeywell FC200E1037, 20X25 Air Filter Replacement - MERV 13

Out of stock

Retail: $59.99

Our Price: $49.99

Save 17%!

Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
Special Order.
Ships in 4 to 5 days.

Retail: $71.99

Our Price: $59.95

Save 17%!

Totaline P102-1620 16x20 MERV 11 Filter

In Stock!
Ships in 1 to 2 business days.

Retail: $45.99

Our Price: $39.99

Save 13%!

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

within the continental U.S.

Special Order.
Ships in 4 to 5 days.

Retail: $110.99

Our Price: $89.95

Save 19%!

FiltersFast RHF0525 Aluminum Range Hood Filter

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Ships in 4 to 5 business days.

Retail: $19.99

As Low As: $11.99

Save 40%!

FiltersFast FFMH-004 Replacement For GE WB06X10359

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Ships in 4 to 5 business days.

Retail: $19.99

Our Price: $14.99

Save 25%!

FiltersFast FFC16265WR Replacement for White Rodgers F825-0548 16x26x5 2-Pack

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Ships in 1 to 2 business days.

Retail: $69.99

Our Price: $59.95

Save 14%!

Carrier FILCCCAR0016 Air Purifier Filter
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Ships in 1 business day

Retail: $49.99

Our Price: $39.99

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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

Save 35%!

Hunter 30917 HEPAtech Purifier Filter
Special Order.
Ships in 4 to 5 days.

Retail: $34.99

Our Price: $29.95

Save 14%!

Trion Air Bear 455602-525 Supreme 2000 Air Cleaner Merv 11
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 4 to 5 business days.

Retail: $199.99

Our Price: $119.95

Save 40%!

FiltersFast ROHAPF60M Replacement For Holmes HAPF60 2-Pack

In Stock!
Ships in 2 to 3 business days.

Retail: $19.99

Our Price: $14.95

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GeneralAire 4365 Replacement for GeneralAire 4350 MERV 10 Filter
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Ships in 1 business day

Retail: $41.99

Our Price: $35.99

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Lennox X5425 MERV 16 Pleated Furnace Filter Media
FREE SHIPPING!

within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $142.99

Our Price: $119.95

Save 16%!

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