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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:


Universal Carbon Range Hood Filter RYM1518C - Trim to Fit
(RYM1518C)

This Universal Carbon Oven Range Hood Filter RYM1518C is a trim to fit oven range oven carbon filter for use with many over the range oven hoods ducted and non-ducted, microwave ovens, and other similar applications requiring odor elimination.


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Universal Carbon Range Hood Filter RYM1518C - Trim to Fit
Our Price: $29.99
Retail: $34.99
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Trion Air Bear 259112-103 Supreme Filter 20x20x5 MERV11
(259112-103)

The Trion Air Bear Supreme Filter 20x20x5 MERV11 is an Air Bear filter with a MERV 11 rating and built-in frame strength. This genuine Air Bear filter boasts pre-applied gasketing on the pre-assembled filter in order to prevent air bypass. The MERV


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Trion Air Bear 259112-103 Supreme Filter 20x20x5 MERV11
Our Price: $34.95
Retail: $49.95
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FiltersFast FFMH-004 Replacement For GE WB06X10359
(FFMH-004)

The FiltersFast FFMH-004 Oven Hood Range Filter is the compatible replacement for GE WB06X10359.


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FiltersFast FFMH-004 Replacement For GE WB06X10359
Our Price: $14.99
Retail: $19.99
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FiltersFast 2" Replacement for Geothermal 2" - MERV11, 6-Pack
(FFGM11)

The 2" Geothermal Home Air Filters MERV 11 - 6 Pack is a six pack of replacement air filters utilizing geothermal technology. These air filters also feature a MERV 11 rati


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FiltersFast 2" Replacement for Geothermal 2" - MERV11, 6-Pack
Our Price: $79.95
Retail: $89.99
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FiltersFast A10PR R Replacement for Totaline P110-0007
(Totaline P110-0007)

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


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FiltersFast A10PR R Replacement for Totaline P110-0007
As Low As: $8.95
Retail: $19.99
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Lennox X5425 MERV 16 Pleated Furnace Filter Media
(X5425)

This Lennox X5425 MERV 16 Pleated Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store. This pleated filter is a genuine MERV 16 filter.

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Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $119.95
Retail: $142.99
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Holmes HAPF31 Air Purifier Carbon PreFilter - 2 Pack
(HAPF31)

This Holmes HAPF31 Air Purifier Carbon PreFilter-2 Pack helps reduce household odors and keeps dust and large particles out of your filter. It is recommended that you replace your Holmes carbon odor filter every 2-3 months for optimum results.


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Holmes HAPF31 Air Purifier Carbon PreFilter - 2 Pack
Our Price: $15.95
Retail: $19.99
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Hunter 30931 HEPAtech Purifier Filter
(30931)

The Hunter 30931 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.97% of particles as small as 0.3 microns.


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Hunter 30931 HEPAtech Purifier Filter
Our Price: $44.95
Retail: $59.99
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FiltersFast ROHAPF60M Replacement For Holmes HAPF60 2-Pack
(ROHAPF60M)

The Holmes HAPF60 Air Purifier Carbon PreFilter-2 Pack is a pack of replacement carbon pre-filters for several models of air cleaners from Holmes, Bionaire, and GE. This two pack of air purifier filters reduces the presence of odors within the home


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FiltersFast ROHAPF60M Replacement For Holmes HAPF60 2-Pack
Our Price: $14.95
Retail: $19.99
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Bionaire 611D Replacement For Bionaire 611DCS Compatible Dual Air Filter
(611DCS)

The Bionaire 611DCS dual air filter cartridge is for use with your Bionaire model air purifier. This dual air purifier filter inclueds both a main and carbon filter for better air filtration. The carbon and air filter work together to remove harmful


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Bionaire 611D Replacement For Bionaire 611DCS Compatible Dual Air Filter
Our Price: $12.99
Retail: $14.99
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Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter
(X8313)

The Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter Replacement is the correct replacement for any furnace the needs a 20x25x5 filter. This expandable filter has a MERV rating of 16.

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Lennox X8313 Healthy Climate HCXF20-16 MERV 16 Expandable Filter
Our Price: $109.95
Retail: $131.99
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GeneralAire 4365 Replacement for GeneralAire 4350 MERV 10 Filter
(4350)

The GeneralAire GA100A03 16x20 MERV10 Filter Media is used on Honeywell F25 Series, F35 Series, F100 Series & F150 Series Media Style Air Cleaners, as well as Honeywell FC100A1003, F100F1004, F100B1008, F100F2028, and F150E1000 Air Cleaners.


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GeneralAire 4365 Replacement for GeneralAire 4350 MERV 10 Filter
Our Price: $35.99
Retail: $41.99
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Honeywell 209989 Air Cleaner Pre-Filter - 16x20 - 2 Pack
(209989)

The Honeywell 209989 Air Cleaner Pre-Filter (2 Pack) - 16x20 includes two 16" x 10" pre-filters for Honeywell 16" x 20" air cleaner models. This Honeywell pre-filter trap larger particulates in your air to extend the life of your air filter.


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Honeywell 209989 Air Cleaner Pre-Filter - 16x20 - 2 Pack
Our Price: $85.95
Retail: $99.99
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Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
(X8314)

The Lennox X8314 is the correct replacement for the following air cleaner: Lennox PMAC-20C Healthy Climate Air Cleaner

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In Stock! Ships in 2 to 3 business days.
Lennox X8314 MERV 16 Expandable Filter Replacement for PMAC-20C
Our Price: $89.95
Retail: $114.99
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FiltersFast FF4M8-20254, 20x25x4 MERV8 Replacement for GeneralAire FP2025 3-Pack
(4526)

The FiltersFast 20x25x4 MERV8 is the compatible replacement for the GeneralAire FP2025 and 4526.


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FiltersFast FF4M8-20254, 20x25x4 MERV8 Replacement for GeneralAire FP2025 3-Pack
Our Price: $49.95
Retail: $59.99
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Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
(356066-0601)

The Carrier 356066-0601 Pre Filter - 2 Pack is a genuine OEM factory replacement pre filter for compatible Carrier air cleaners and Bryant air cleaners, especially the Carrier EACBAXCC0020 Electronic Air Cleaner.


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Carrier 356066-0601 EACBAXCC0020 PreFilter - 2 Pack
Our Price: $59.95
Retail: $71.99
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BestAir D11-C Replacement for Honeywell HC-811 Humidifier Filter
(Honeywell HC-811 R)

The BestAir D11-C Replacement for Honeywell HC-811 Humidifier Filter will remove minerals and pollutants from the water, preventing them from being released into your homes air.


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BestAir D11-C Replacement for Honeywell HC-811 Humidifier Filter
Our Price: $9.99
Retail: $12.99
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FiltersFast FFC16265WRMM13 Replacement for White Rodgers F825-0548, 16x26x5 - 2-Pack
(FFC16265WRMM13)

The FiltersFast Brand White Rodgers 16x26x5 F825-0548 2 Pack is a compatible economical alternative to the genuine 16x26x5 air furnace filter.


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FiltersFast FFC16265WRMM13 Replacement for White Rodgers F825-0548, 16x26x5 - 2-Pack
Our Price: $74.95
Retail: $99.99
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Lennox 92X17 HEPA Filter Cartridge Replacement
(92X17)

This Lennox 92X17 HEPA Filter Cartridge Replacement offers a 3-stage filtration process is used to create a very effective filtration system. The Lennox Hepa Air Filter offers possible air-filtration performance.

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Lennox 92X17 HEPA Filter Cartridge Replacement
Our Price: $174.95
Retail: $198.99
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Filtrete Deep 1500-2 Pack Replacement 4" Air Filter
(Deep 1500-2)

The Filtrete Deep 1500-2 Pack Replacement 4" Air Filter comes with greater depth for improved airflow and more effective containment reduction.


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Filtrete Deep 1500-2 Pack Replacement 4" Air Filter
Our Price: $89.95
Retail: $110.99
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Honeywell FC40R1110 Return Grille Air Filter 14X20x3
(FC40R1110)

The Honeywell FC40R1110 is a return air grille filter that fits the following: Any return air grille that uses a 14 inch x 20 inch x 4 inch filter The Honeywell FC40R1110 Furnace Air Filter - 14X20 has a Minimum Efficiency Reporting Value (MER


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Honeywell FC40R1110 Return Grille Air Filter 14X20x3
Our Price: $49.95
Retail: $69.99
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GeneralAire F1020, 4562 MERV 13 Filter Media Replacement
(4562)

The General Air F1020 MERV 13 Filter Media measures 20"x25"x4", and is correct filter for General Aire TERSus2000 Air Purification Systems.


Special Order. Ships in 11 days.
GeneralAire F1020, 4562 MERV 13 Filter Media Replacement
Our Price: $79.95
Retail: $85.99
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FiltersFast Replacement for Trion Air Bear AB-51625-8 Supreme 1400 Air Filters
(AB-51625-8)

The FiltersFast FFC16255TABM8 16 x 25 x 5 2-PackĀ is the compatible replacement air filter for the Trion Air Bear AB-51625-8.


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FiltersFast Replacement for Trion Air Bear AB-51625-8 Supreme 1400 Air Filters
Our Price: $54.95
Retail: $69.99
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FiltersFast A10PR R Replacement for Idylis A10-ID
(Idylis A10-ID R)

The FiltersFast A10PR R is the correct replacement for the Idylis A10-ID R and for the following humidifier models:


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FiltersFast A10PR R Replacement for Idylis A10-ID
As Low As: $8.95
Retail: $19.99
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Honeywell FC100A1003 Replacement for Honeywell FC35A1035 - 16x20x5
(FC35A1035)

The Honeywell FC35A1035 is a replacement air cleaner filter that is the correct compatible replacement for the following air filter: Honeywell FC100A1003 The Honeywell FC35A1035 Furnace/ AC Air Filter 16x20x5 fits Honeywell 16 inch x 20 inch


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Honeywell FC100A1003 Replacement for Honeywell FC35A1035 - 16x20x5
As Low As: $38.99
Retail: $49.99
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