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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?

Yes, both AC filters and furnace filters are the same thing. We categorize filters based on their intended use to make filter shopping easier for the customer. During the summer months you are more likely to search for AC filters. While during colder winter months you are looking to buy furnace filters. A good tip for remembering when to change your filters is to replace them at the start of each new season.

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?

Yes, Filtersfast, Filtrete, Carrier, among many other air filter brands use an electrostatically charged filter media. Fiberglass air filters are far less common today and were never designed to improve air quality, rather they protect HVAC systems from large dirt and debris.


Air Filters full product list:


Lennox X8308 MERV 16 Expandable Filter Kit
(X8308)

This Lennox Expandable Filter is a genuine Lennox part. The Lennox Healthy Climate Filter is a viable replacement for several Air Cleaner Models.

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In Stock! Ships in 5 to 6 business days.
Lennox X8308 MERV 16 Expandable Filter Kit
Our Price: $131.99
Retail: $149.99
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Essick Air 1104 Carbon PreFilter Replacement 6-Pack
(1104SS)

The Essick Aire 1104 carbon pre filter is manufactured for your 127 001 series air purifier. This air purifier removes 99.97% of all dust, pollen and bacteria, and the Essick Air 1104 filter will keep your purifier working at its best. The Essick ai


In Stock! Ships in 8 to 9 business days.
Essick Air 1104 Carbon PreFilter Replacement
Our Price: $60.18

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Duracraft HEP-5020 Air Cleaner Filter Replacement
(Duracraft HEP-5020 R)

The Duracraft HEP-5020 is the compatible replacement for the Duracraft air purifiers.


Out of stock
Duracraft HEP-5020 Air Cleaner Filter Replacement
Our Price: $44.99
Retail: $66.95
You Save 33%!

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FiltersFast 5" Trane Compatible Air Filter 2-Pack
(FFC175275TRN OKGM)

The FiltersFast 5" Trane Compatible FFC175275TRN OKGM is a compatible replacement air filter that replaces the Trane BAYFTFR17M and Trane FLR06069 air filters, both of which can be used in several models of Trane Air Cleaners. This 5" filter boasts


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FiltersFast 5" Trane Compatible Air Filter 2-Pack
Our Price: $70.99
Retail: $104.99
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Trion 3508 Humidifier Filter Pad Replacement
(3508)

The Trion 3508 Humidifier Filter Pad Replacement is a replacement humidifier pad for the Herrmidifier Model 3500 Humidifiers. This Trion humidifier filter is also known as a foam filter belt and measures approximately 16 inches x 11 3/8 inches x 1 1


In Stock! Ships in 3 to 4 business days.
Trion 3508 Humidifier Filter Pad Replacement
Our Price: $21.19

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Lennox HCC16-28 Filter Cabinet System MERV 16
(Y2921)

The Lennox HCC16-28 Filter Cabinet System MERV 16 is an air cleaner cabinet that attaches directly to your HVAC system without causing any additional energy costs. The Lennox Healthy Climate HCC16-28 is ideal for whole-house air filtration. The Lenn

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In Stock! Ships in 8 to 9 business days.
Lennox HCC16-28 Filter Cabinet System MERV 16
Our Price: $301.99
Retail: $349.99
You Save 14%!

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Honeywell FC40R1185 Return Air Grille Filter 18x18 5-Pack
(FC40R1185)

The Honeywell FC40R1185 Return Air Grille Filter 18x18 is a replacement air filter that mounts in most return filter grilles. The Honeywell return air grille filter features four inches of depth, which provides a higher efficiency than standard one


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Honeywell FC40R1185 Return Air Grille Filter 18x18
Our Price: $252.50

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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
(1000-3000-0101)

The Trion 1000-3000-0101 Replacement Air Filter 2-Pack is a replacement air filter for the Trion CAC500 and CAC500 air cleaners. This CAC500M filter features pleated media to trap contaminants and improve overall indoor air quality. This Trion filte

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Trion 1000-3000-0101 Replacement Air Filter 2-Pack
Our Price: $217.67
Retail: $299.99
You Save 27%!

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Honeywell F200E1003 16x20 Air Cleaner
(F200E1003)

The Honeywell F200E1003 16x20 Air Cleaner is applicable to all gas, oil and electric forced warm air furnaces and to compressor cooling up to 5 tons.

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In Stock! Ships in 10 to 11 business days.
Honeywell F200E1003 16x20 Air Cleaner
Our Price: $231.99
Retail: $299.99
You Save 23%!

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Honeywell HF100F1620 Replacement For Honeywell F100F2028
(F100F2028)

The Honeywell F100F2028 16x20 Media Air Cleaner mounts in the return air duct in any position.

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In Stock! Ships in 7 to 8 business days.
Honeywell HF100F1620  Replacement For Honeywell F100F2028
Our Price: $145.99
Retail: $199.99
You Save 27%!

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Honeywell F100F2036 20x20 Whole Home Air Purifier
(F100F2036)

The Honeywell F100F2036 20x20 Whole Home Air Purifier uses a 4-inch extended media that makes replacement quick and easy.

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Honeywell F100F2036 20x20 Whole Home Air Purifier
Our Price: $119.99
Retail: $249.99
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Honeywell F100F2044 25x20 Whole House Air Cleaner
(F100F2044)

The Honeywell F100F2044 25x20 Whole House Air Cleaner does not require electrical connections and mounts in the return air duct in any position.

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Honeywell F100F2044 25x20 Whole House Air Cleaner
Our Price: $123.69
Retail: $134.99
You Save 8%!

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Honeywell F100F2051 25x22 Whole Home Air Purifier
(F100F2051)

The Honeywell F100F2051 25x22 Air Purifier System is applicable to all gas, oil and electric forced air furnaces and to compressor cooling up to 5 tons.

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In Stock! Ships in 10 to 11 business days.
Honeywell F100F2051 25x22 Whole Home Air Purifier
Our Price: $100.99

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Honeywell F300E1001 16x20 Electronic Air Cleaner
(F300E1001)

The Honeywell F300E1001 16x20 Electronic Air Cleaner optimizes efficiency with airflow that captures up to 98% of airborne particles that passes through it.

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In Stock! Ships in 10 to 11 business days.
Honeywell F300E1001 16x20 Electronic Air Cleaner
Our Price: $549.95
Retail: $999.99
You Save 45%!

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Honeywell F300E1019 16x25 Electronic Air Purifier
(F300E1019)

THe Honeywell F300E1019 16x25 Electronic Air Purifier optimizes efficiency with airflow that captures up to 98% of airborne particles that passes through it.

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In Stock! Ships in 3 to 4 business days.
Honeywell F300E1019 16x25 Electronic Air Purifier
Our Price: $571.99
Retail: $599.99
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FiltersFast Replacement For Trane FFC14275TRNM13 14x27x5 Air Filter 2-Pack
(FFC14275TRNM13)

The Trane FFC14275TRNM13 compatible air filter is a replacement furnace air filter that fits the TFM145BOFRO Perfect Fit High Efficiency Air Cleaner.


In Stock! Ships in 2 to 3 business days.
FiltersFast Replacement For Trane FFC14275TRNM13 14x27x5 Air Filter
Our Price: $56.98

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Lennox LB-71461 Media Filter 36-in W x 20-ft L
(DLX30025)

The Lennox LB-71461 Media Filter is a 36-in W x 20-ft L roll of media filter that is for air conditioning and central heating systems with hammock filter frames.

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In Stock! Ships in 7 to 8 business days.
Lennox LB-71461 Media Filter 36-in W x 20-ft L
Our Price: $98.93
Retail: $104.99
You Save 6%!

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Totaline DTLP102-2020 20x20 MERV 11 Filter
(DTLP102-2020)

The Totaline DTLP102-2020 20x20 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


In Stock! Ships in 3 to 4 business days.
Totaline DTLP102-2020 20x20 MERV 11 Filter
Our Price: $40.89
Retail: $46.99
You Save 13%!

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Totaline DTLP102-2025 20x25 MERV 11 Filter
(DTLP102-2025)

The Totaline DTLP102-2025 20x25 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


In Stock! Ships in 1 to 2 business days.
Totaline DTLP102-2025 20x25 MERV 11 Filter
Our Price: $41.99
Retail: $49.99
You Save 16%!

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3M OAC100RF Replacement Air Filter 6-Pack
(OAC100RF)

The 3M OAC100RF Replacement Air Filter is the replacement filter for the 3M Filtrete OAC100 Office Air Cleaner. This easy to change filter reduces airborne dust, pollen and particulates down to 0.01 microns.

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Special Order. Ships in 14 days.
3M OAC100RF Replacement Air Filter 6-Pack
Our Price: $133.94
Retail: $162.00
You Save 17%!

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Hunter 30938 QuietFlo HEPA Purifier Filter 3-Pack
(30938)

The Hunter 30938 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


Special Order. Ships in 5 days.
Hunter 30938 QuietFlo HEPA Purifier Filter
Our Price: $188.58

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Hunter 30960 QuietFlo HEPA Purifier Filter 3-Pack
(30960)

The Hunter 30960 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns.


Special Order. Ships in 10 days.
Hunter 30960 QuietFlo HEPA Purifier Filter
Our Price: $210.75

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Hunter 30962 QuietFlo HEPA Purifier Filter
(30962)

The Hunter 30962 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


Special Order. Ships in 6 days.
Hunter 30962 QuietFlo HEPA Purifier Filter
Our Price: $73.99
Retail: $85.00
You Save 13%!

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Hunter 30965 QuietFlo HEPA Purifier Filter 3-Pack
(30965)

The Hunter 30965 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


Special Order. Ships in 7 days.
Hunter 30965 QuietFlo HEPA Purifier Filter
Our Price: $110.97

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Carrier 356066-1201 Charcoal Filter EACBAXCC0020 2-Pack
(356066-1201)

The Carrier 356066-1201 Charcoal Filter is a genuine OEM factory replacement charcoal carbon filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0020 Electronic Air Cleaner.


Special Order. Ships in 9 days.
Carrier 356066-1201 Charcoal Filter EACBAXCC0020
Our Price: $96.96

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Filters Fast - Air Filters

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