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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.


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Air Filters product list


RPS R14ALLM Replacement For Kenmore 83176 Carbon PreFilter 2-Pack
(KENMORE 83176 1 R)

The Kenmore 83176 Carbon PreFilter comes in this cost-cutting 2-pack package. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kenmore 83176 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack 4-Pack
(98N42)

The Lennox 98N42 is a MERV 8 furnace filter 4-pack for your home. This furnace filter will protect your home from unhealthy contaminants and help keep your heating and cooling bill low.


In Stock! Ships in 14 to 15 business days.
Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack
Our Price: $37.95

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Trion Herrmidifier 1220 Humidifier Filter
(7098 11 R)

The Trion Herrmidifier 1220 Humidifier Filter Replacement is a replacement humidifier filter for the Herrmidifier Model 465-C1 and Herrmidifier 465-1. This filter is very dependable and reliable.


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Trion Herrmidifier 1220 Humidifier Filter
Our Price: $8.01
Retail: $9.99
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Honeywell 32000146-001 Humidifier Filter
(7098 13 R)

The Honeywell 32000146-001 Humidifier Filter is a replacement humdifier filter made for several Honeywell drum-type humidifier models. This Honeywell evaporator pad measures approximately 7.5" H x 26.5" L x 1" W and removes minerals from evaporating


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Honeywell 32000146-001 Humidifier Filter
Our Price: $8.01
Retail: $9.99
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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
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3M Filtrete OAC200 Replacement Air Cleaner Filter 6-Pack 6-Pack
(OAC200RF)

The 3M Filtrete OAC200 Replacement Air Cleaner Filter is a replacement filter for the 3M Filtrete OAC200 Office Air Cleaner.


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3M Filtrete OAC200 Replacement Air Cleaner Filter 6-Pack
Our Price: $275.94

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RPS R14ALLM Replacement For Kenmore 83237 Carbon PreFilter 2-Pack
(KENMORE 83237 1 R)

The Kenmore 83237 is the correct replacement for the following air cleaners: Kenmore Air Cleaners


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kenmore 83237 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Lennox 72H02 Whole House System Air Filter
(72H02)

The Lennox 72H02 Whole House System Air Filter is a replacement air filter for several Lennox model electronic whole house air purifiers. This pre-filter measures approximately 20x13x3/8 and directly replaces part number 72H0201.


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Lennox 72H02 Whole House System Air Filter
Our Price: $17.99
Retail: $20.99
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Lennox 92X10 40/60 HEPA Filter Replacement
(92X10)

This Lennox Charcoal Carbon Filter 92X10 is designed to capture 99.97% of particulates down to 0.3 micron that pass through it. The Lennox Healthy Climate filter should be replaced every 2-5 years.

Free shipping within the continental United States!

In Stock! Ships in 12 to 13 business days.
Lennox 92X10 40/60 HEPA Filter Replacement
Our Price: $261.99
Retail: $284.96
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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 0.1 microns. This is a true HEPA filter and a genuine OEM Hunter part.


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Hunter 30965 QuietFlo HEPA Purifier Filter
Our Price: $110.97

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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.


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Totaline DTLP102-2025 20x25 MERV 11 Filter
Our Price: $41.99
Retail: $49.99
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GeneralAire 401-13156 MERV 11 Filter Media
(4051)

The GeneralAire Merv 11 ventilator filter replacement is designed for use in GeneralAire Air Cleaners. This part is often called a GeneralAire 401-13156. A suitable AC24 filter replacement, this Merv 11 replacement filter is expandable.


In Stock! Ships in 7 to 8 business days.
GeneralAire 401-13156 MERV 11 Filter Media
Our Price: $52.85
Retail: $69.99
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RPS R14ALLM Replacement For Bemis 1104 Carbon PreFilter 2-Pack
(Bemis 1104 1 R)

The Bemis 1104 is the correct replacement for the following air purifier: Bemis True HEPA Air Purification System 127-001.


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Bemis 1104 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Trion 4008 Humidifier Filter Pad Replacement
(Trion 4008)

The Trion 4008 Humidifier Filter Pad Replacement is a replacement filter pad for the Herrmidifier Model 4000 and 4000C Humidifiers. This Trion humidifier filter measures approximately 15.5 inches x 11.25 inches x 1.25 inches. This Trion humidifier p


Special Order. Ships in 10 days.
Trion 4008 Humidifier Filter Pad Replacement
Our Price: $31.99
Retail: $39.99
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3M Filtrete Home Odor Furnace Filter - 18 x 24 x 1 4-Pack
(Filtrete-Odor-18241)

The 3M Filtrete Home Odor Furnace Filter - 18 x 24 x 1 effectively removes common odors in your home while also trapping airborne contaminants. This odor filter is constructed with activated carbon to remove odors like pet, smoke, cooking, mildew, a


In Stock! Ships in 12 to 13 business days.
3M Filtrete Home Odor Furnace Filter - 18 x 24 x 1
Our Price: $119.96

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Honeywell F300E1035 20x25 Electronic Air Cleaner
(F300E1035)

The Honeywell F300E1035 20x25 Electronic Air Cleaner operates with all gas, oil and electric forced warm air furnaces and air conditioning systems.

Free shipping within the continental United States!

Special Order. Ships in 2 days.
Honeywell F300E1035 20x25 Electronic Air Cleaner
Our Price: $641.99
Retail: $699.99
You Save 8%!

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Aprilaire 1200 Humidifier Filter Pad Water Panel
(Aprilaire 1200)

This is an Aprilaire 1200 Humidifier Filter Pad Water Panel for various Aprilaire commercial humidifiers including the Aprilaire 1120 Humidifier, Aprilaire 1130 humidifier, and the Aprilaire 1140 humidifer. The Aprilaire water panel evaporator is th


Special Order. Ships in 7 days.
Aprilaire 1200 Humidifier Filter Pad Water Panel
Our Price: $60.99
Retail: $90.60
You Save 33%!

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FiltersFast A10PR R Replacement For BDP P110-0007
(BDP P110-0007 R)

The FiltersFast A10PR R is the correct replacement for the BDP P110-0007 R and for the following humidifier models:


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FiltersFast A10PR R Replacement For BDP P110-0007
As Low As: $6.99
Retail: $10.99
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FiltersFast A10PR R Replacement For BDP HUMBBSBP2312-A
(BDP HUMBBSBP2312-A R)

The FiltersFast A10PR R is the correct replacement filter for the BDP HUMBBSBP2312-A R and for the following humidifier models:


In stock! Ships in 1 business day.
FiltersFast A10PR R Replacement For BDP HUMBBSBP2312-A
As Low As: $6.99
Retail: $10.99
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FiltersFast A10PR R Replacement For Bryant P110-0007
(Bryant P110-0007 R)

The Bryant P110-0007 Humidifier Water Panel Filter is the nucleus of your humidifier, keeping you comfortable and balanced in your home. The Bryant filter is made of durable material, ensuring longevity.


In stock! Ships in 1 business day.
FiltersFast A10PR R Replacement For Bryant P110-0007
As Low As: $6.99
Retail: $10.99
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FiltersFast A10PR R Replacement For Lasko 5000L
(Lasko 5000L R)

The FiltersFast A10PR R is the correct replacement for the Lasko 5000L R and for the following humidifier models:


In stock! Ships in 1 business day.
FiltersFast A10PR R Replacement For Lasko 5000L
As Low As: $6.99
Retail: $10.99
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FiltersFast A10PR R Replacement For Payne P110-0007
(Payne P110-0007 R)

The FiltersFast A10PR R is the correct replacement for the Payne P110-0007 Humidifier Water Panel Filter and for the following models of Payne humidifiers:


In stock! Ships in 1 business day.
FiltersFast A10PR R Replacement For Payne P110-0007
As Low As: $6.99
Retail: $10.99
You Save 36%!

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Honeywell HC-819 Humidifier Wick Filter
(Honeywell HC-819 R)

The Honeywell HC-819 Humidifier Wick Filter-3 Pack is the correct compatible replacement for the following models of humidifiers: Duracraft DH-8000 Duracraft DH-8002 Duracraft DH-8004 Duracraft DH-8005 This humidifier wick filter removes mi


In stock! Ships in 1 business day.
Honeywell HC-819 Humidifier Wick Filter
Our Price: $10.45
Retail: $16.99
You Save 38%!

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Carrier P110-0006 Humidifier Filter Replacement
(7098 5 R)

The P110-0006 is the correct replacement for the following humidifiers: Carrier Stainless Steel Humidifier Model 914A Carrier Stainless Steel Humidifier Model P110-100


In stock! Ships in 1 business day.
Carrier P110-0006 Humidifier Filter Replacement
Our Price: $8.01
Retail: $9.99
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RPS R14ALLM Replacement For Kaz Premium Carbon PreFilter 2-Pack
(KAZ PREMIUM 1 R)

The Kaz Premium Carbon PreFilter 2-Pack is a replacement pack of pre-filters for the Kaza HEPAClean and HEPA Compact Tower model air purifiers. This two pack of carbon filters helps your HEPA filter reach maximum efficiency and reduces unwanted odor


In stock! Ships in 1 business day.
RPS R14ALLM Replacement For Kaz Premium Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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Filters Fast - Air Filters

" I just received my filters - thank you for the excellent work that you guys do! I'm a very happy customer. " - Mike, San Marcos, TX
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