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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:


BestAir A12WPR Replacement for Space-Gard #12 Humidifier Filter
(Space-Gard 12 R)

The BestAir A12WPR Humidifier Water Panel Replacement generates the type of humidity needed for your indoor air during the heating season.


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BestAir A12WPR Replacement for Space-Gard #12 Humidifier Filter
Our Price: $10.99
Retail: $14.99
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FiltersFast HAPF600 R Replacement for Bionaire HAPF600CS R
(Bionaire HAPF600CS R)

The FiltersFast HAPF600 R is a HEPA filter that eliminates dust, pollen, and other airborne contaminants for better air quality


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FiltersFast HAPF600 R Replacement for Bionaire HAPF600CS R
Our Price: $17.95
Retail: $29.95
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BestAir HM2PR Replacement for Carrier P110-0006 Humidifier Filter
(7098 5 R)

This BestAir Filter features honeycomb filtration to trap mineral pollutants found in water and help prevent them from entering your home.


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BestAir HM2PR Replacement for Carrier P110-0006 Humidifier Filter
Our Price: $8.01
Retail: $9.99
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BestAir HM2PR Replacement for Trion Herrmidifier 1220
(7098 11 R)

The BestAir HM2PR Humidifier Filter replaces the filter in your Herrmidifier models 465-C1 and 465-1.


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BestAir HM2PR Replacement for Trion Herrmidifier 1220
Our Price: $8.01
Retail: $9.99
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BestAir D19-C Replacement for Honeywell HC-819 Humidifier Filter
(Honeywell HC-819 R)

This BestAir D19-C humidifier wick filter removes minerals and pollutants from your water. This Honeywell humidifier filter is reinforced, giving the filter a longer life.


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BestAir D19-C Replacement for Honeywell HC-819 Humidifier Filter
Our Price: $10.45
Retail: $16.99
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BestAir A10WPR Replacement for Carrier HUMBBSBP2312-A
(C HUMBBSBP2312-A 1R)

The BestAir A10WPR Paper Water Panel Filter has approximate dimensions of 9 1/2 x 10 x 1 1/2, and is the correct compatible replacement for the Carrier HUMBBSBP2312-A and Carrier HUMCCSBP2312-A models of humidifiers.


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BestAir A10WPR Replacement for Carrier HUMBBSBP2312-A
Our Price: $15.99
Retail: $19.99
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BestAir A10WPR Replacement for Carrier P110-0007 Filter
(Carrier P110-0007 1R)

The Carrier P110-0007 paper water panel filter measures 9-7/16" x 10-1/16" x 1-5/8" (approx.), and is the correct filter for many humidifiers models by BDP, AprilAire, Bryant, Lennox, Autoflo, Healthy Climate, Hamilton, Carrier, Lasko and Totaline.


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BestAir A10WPR Replacement for Carrier P110-0007 Filter
Our Price: $15.99
Retail: $19.99
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GeneralAire GA23 Humidifier Vapor Pad Replacement 10-Pack
(7923)

Humidifier vapor pads, sometimes called humidifier filter pads or vapor pad replacements, are one of the most important elements in a humidifier. This is because they are the key component in creating the vapor that re-introduces moisture into dry a


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GeneralAire GA23 Humidifier Vapor Pad Replacement
Our Price: $109.90

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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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Out of stock
3M OAC100RF Replacement Air Filter 6-Pack
Our Price: $133.94
Retail: $162.00
You Save 17%!

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Holmes HWF64 Humidifier Filter
(HWF64)

The Holmes HWF64 Humidifier Filter is designed to maintain optimal peformance of your Holmes Humidifier. Fits models HM1645, HM1730, HM1745, HM1750, and HM2200.


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Holmes HWF64 Humidifier Filter
As Low As: $15.99
Retail: $25.95
You Save 38%!

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Trion Air Bear 455602-025 Supreme 2000 Media Air Cleaner
(455602-025)

The Trion Air Bear Supreme 2000 Media Air Cleaner, part number 455602-019, provides a clean and controlled indoor air environment in your home by removing dirt, dust, pollen and other microscopic particles from your air.

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In Stock! Ships in 12 to 13 business days.
Trion Air Bear 455602-025 Supreme 2000 Media Air Cleaner
Our Price: $100.95
Retail: $120.74
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Trion Air Bear 455602-225 Supreme 20x20 Media Air Cleaner
(455602-225)

The Trion Air Bear Supreme 20x20 Media Air Cleaner, part number 455604-019, provides a clean and controlled indoor air environment in your home by removing dirt, dust, pollen and other microscopic particles such as grease and soot from your air.

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In Stock! Ships in 18 to 19 business days.
Trion Air Bear 455602-225 Supreme 20x20 Media Air Cleaner
Our Price: $111.99
Retail: $120.74
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Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
(455601-001C)

The Trion Duct Mount HE Plus 1400, 455601-001C is an Electronic Whole House Air Purification System. The HE Plus 1400 includes an elctronic air flow sensor. Genuine Trion Fedders product. Learn how the HE Plus 1400 can help you live a healthy life..

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In Stock! Ships in 19 to 20 business days.
Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
Our Price: $371.95
Retail: $440.00
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Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack 2-Pack
(HAPF92)

The Holmes HAPF92CS Carbon Odor Pre-Filter 2-pack fits the Holmes Air Purifier model HAP292. It extends the life of your air purifier's HEPA filter (Holmes model HAPF38CS) by trapping over 4000 chemicals and eliminates odors.


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Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack
Our Price: $15.98

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Honeywell TRN1427T1 Replacement for Trane BAYFTFR14M, 14.5x27x5 Perfect Fit - 3-Pack
(TRN1427T1)

These three Honeywell air filters are compatible furnace filters that can be used as upgrades over the Trane Perfect Fit filter of the same size. Genuine Trane Perfect Fit filters have only a MERV 8 rating, while these compatible Honeywell furnace f

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In Stock! Ships in 60 to 61 business days.
Honeywell TRN1427T1 Replacement for Trane BAYFTFR14M, 14.5x27x5 Perfect Fit - 3-Pack
Our Price: $122.00
Retail: $140.00
You Save 13%!

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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
(40120101)

This Hoover Power-Drive WindTunnel Vacuum Final Filter is a replacement vacuum final filter for Hoover Self-Propelled WindTunnel Upright vacuums with the Hoover Allergen Filtration System.


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Hoover PowerDrive WindTunnel HEPA Vacuum Filter
Our Price: $11.47
Retail: $19.99
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$2,000 Premium Fiberglass Air Filter
(Air 2000)

How does one simple fiberglass air filter cost $2,000? Must be one really good air filter, right?

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Out of stock
$2,000 Premium Fiberglass Air Filter
Our Price: $2,001.00

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Honeywell HC-14 Replacement Humidifier Filter Wick
(HC-14)

The Honeywell HC-14 Humidifier Filter Replacement reduces waterborne minerals and contaminants to keep your humidifier clean.


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Honeywell HC-14 Replacement Humidifier Filter Wick
Our Price: $24.99
Retail: $25.99
You Save 4%!

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Trion Air Bear 455602-625 Supreme 1400 Air Cleaner Merv 11
(455602-625)

The Trion Air Bear Supreme 1400 Air Cleaner Merv 11 is a whole house air cleaner that captures and holds pollutants within its filter. The filter then efficiently allows the air to pass throughout the system. The Trion Supreme 1400 features a rugged

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In Stock! Ships in 14 to 15 business days.
Trion Air Bear 455602-625 Supreme 1400 Air Cleaner Merv 11
Our Price: $111.99
Retail: $129.99
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Trion Air Bear 455602-425 Cub Air Cleaner 16x25x3 Merv 8
(455602-425)

The Trion Air Bear Cub Air Cleaner 16x25x3 is a genuine filter for use in your heating and cooling system. This Trion Air Bear Media Air Cleaner has a MERV 8 rating that will rid your home of air contaminants including lint, dust, pollen, mold spore


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Trion Air Bear 455602-425 Cub Air Cleaner 16x25x3 Merv  8
Our Price: $81.99
Retail: $99.99
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Trion Air Bear 455602-925 Cub Air Cleaner 16x25x3 Merv 11
(455602-925)

The 455602-925 is the correct air cleaner that uses: 16" X 25" X 3" MERV 11 Air Bear Filter Replacements.

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In Stock! Ships in 26 to 27 business days.
Trion Air Bear 455602-925 Cub Air Cleaner 16x25x3 Merv 11
Our Price: $86.99
Retail: $99.99
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Holmes HAPF92 Air Purifier Carbon PreFilter 2-Pack
(ROHAPF92M)

The Holmes HAPF92 Air Purifier Carbon PreFilter-2 Pack fits the Holmes HAP292 model air purifier. This carbon prefilter features Microban technology with anti microbial and anti bacterial filter protection. The Holmes HAPF92 Air Purifier Carbon P


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Holmes HAPF92 Air Purifier Carbon PreFilter
Our Price: $15.98

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Lennox 69H85 Whole House Air Purifier Filter 6-Pack
(69H85)

The Lennox 69H85 Whole House Air Purifier Filter is a replacement air filter for the EAC12-14 and EAC-14 Healthy Climate Electronic Air Cleaner from Lennox. This washable pre-filter traps large pollutants, like dust and dirt particles, and helps you


In Stock! Ships in 16 to 17 business days.
Lennox 69H85 Whole House Air Purifier Filter
Our Price: $71.10

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Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack 4-Pack
(91X24)

The Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack is a set of pleated air filters that measures approximately 15x20x1 and has an a MERV 8 rating. This air conditioner filter arrives in a convenient 4 pack, which will last up to one year.


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Lennox 91X24 MERV 8 Pleated Air Filters 4-Pack
Our Price: $37.95

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Lennox 98N43 MERV 8 Pleated Furnace Filter 4-Pack 4-Pack
(98N43)

The Lennox 98N43 MERV 8 Pleated Furnace Filters 4-Pack is the correct replacement for all furnaces that require a 20x20x1 filter. These Lennox Healthy Climate filters remove particles and bioaerosols as small as 3 microns


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Lennox 98N43 MERV 8 Pleated Furnace Filter 4-Pack
Our Price: $95.00

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Filters Fast - Air Filters

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