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Find Replacement Air Filters Fast & Easy!

Air Filter Shield

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


Trion 16x25x5 Air Bear Furnace Filter MERV 13 2pk
(FFC16255TABM13)

The Trion 16x25x5 Air Bear Furnace Filter is the compatible version of the genuine Trion Air Bear Media AC Filter 16x25x5, 255649-105.


In Stock! Ships in 1 to 2 business days.
Trion 16x25x5 Air Bear Furnace Filter MERV 13 2pk
Our Price: $93.00
Retail: $100.00
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Hamilton Humidifier Evaporator Pad EP-037
(EP-037)

The Hamilton EP-037 is the correct replacement for the following model of humidifier: Hamilton 12HF The Hamilton Humidifier Evaporator Pad EP-037 collects moisture in the humidifier, converting it into humidity in your indoor air. This humidif


In Stock! Ships in 7 to 8 business days.
Hamilton Humidifier Evaporator Pad EP-037
Our Price: $17.99
Retail: $29.99
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Honeywell FC40R1094 12x12x3 Return Grille Filter
(FC40R1094)

The Honeywell FC40R1094 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 12x12x4. Genuine Honeywell Part.


In stock! Ships in 1 business day.
Honeywell FC40R1094 12x12x3 Return Grille Filter
As Low As: $37.50
Retail: $50.00
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GeneralAire AC-1 Filter 20x24x5 MERV 13 (2 PACK)
(FFC20245GAM13)

The GeneralAire AC-1 Air Filter 20x24x5 is a cost-effective compatible version of the genuine 20x24x5 General Filter AC-1 Air Filters.


In Stock! Ships in 12 to 13 business days.
GeneralAire AC-1 Filter 20x24x5 MERV 13 (2 PACK)
Our Price: $60.00
Retail: $80.00
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Hunter 30917 HEPAtech Purifier Filter
(30917)

The Hunter 30917 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


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Hunter 30917 HEPAtech Purifier Filter
Our Price: $16.99
Retail: $19.95
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Hunter 30925 HEPAtech Purifier Filter
(30925)

The Hunter 30925 HEPAtech v Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


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Hunter 30925 HEPAtech Purifier Filter
Our Price: $23.00
Retail: $34.00
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Magnetic Vent Cover HVAC Air Filter 8x18
(MAGNETIC VENT 8X18)

Some of the best things in life are simple, like a washable 8x18 Magnetic Vent Cover HVAC Air Filter that installs in no time at all and prevent pesky hair, dirt, and bugs from going into or leaving your air vents.


Special Order. Ships in 9 days.
Magnetic Vent Cover HVAC Air Filter 8x18
Our Price: $12.95
Retail: $14.95
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Honeywell FC40R1045 14x25 Return Air Grille Filter
(FC40R1045)

Honeywell FC40R1045 14x25 Return Air Grille AC Filter is a high efficiency, replacement for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 14x25x4. Genuine Honeywell Part.


In stock! Ships in 1 business day.
Honeywell FC40R1045 14x25 Return Air Grille Filter
Our Price: $41.00
Retail: $50.00
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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5
(BAYFTFR24M2A)

The Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 fits the TFM245B0FR0 Perfect Fit High Efficiency Air Cleaner and easily slides in for quick use. This Trane Perfect Fit filter measures approximately 24.5" x 27" x 5" and has a MERV 8 rating for


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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5
Our Price: $49.73
Retail: $59.99
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Lennox X0582 MERV 10 Air Cleaner Media Filter
(X0582)

The Lennox X0582 MERV 10 Air Cleaner Media Filter is a furnace filter media that contains a MERV 10 air filter. This MERV 10 furnace filter is also known as the Lennox X0582 and measures 16x20x5 inches.


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Lennox X0582 MERV 10 Air Cleaner Media Filter
Our Price: $27.00
Retail: $78.85
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Honeywell 209894 Replacement 16x20 Air Filter
(209894 R)

The Honeywell 209894 Replacement 16x20 Air Filter is a replacement furnace air filter for use with Honeywell 16 x 20 Air Cleaners, including the Honeywell F100F1004, F100B1008, F150E1000, F100F2028, and other models. This Honeywell furnace filter, a


In stock! Ships in 1 business day.
Honeywell 209894 Replacement 16x20 Air Filter
Our Price: $29.99
Retail: $49.99
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Whirlpool AP51030K Air Purifier 510 (Large Room)
(AP51030K)

The Whirlpool Whispure 510 (AP51030K) is a home air purifier which filters the dust, dander, pollen, mold spores, smoke, fabric fibers, allergens, and other contaminants in your air. The Whirlpool Whispure 510 air purifier features a True HEPA air p

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Whirlpool AP51030K Air Purifier 510 (Large Room)
Our Price: $299.99
Retail: $375.00
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3M OAC100RF Replacement Air Filter
(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.


In stock! Ships in 1 business day.
3M OAC100RF Replacement Air Filter
Our Price: $21.99
Retail: $27.00
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GE WB02X10733 Microwave Filter Compatible
(OEMRCR0613)

This Microwave Filter Replacement (OEMRCR0613) made by American Metal Filter Company is a compatible replacement microwave filter primarily for the GE WB02X10733 filter. It is a recirculating charcoal carbon microwave filter for use with non-ducted


In Stock! Ships in 14 to 15 business days.
GE WB02X10733 Microwave Filter Compatible
Our Price: $14.99
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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In stock! Ships in 1 business day.
Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $99.95
Retail: $122.10
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Magnetic Vent Cover HVAC Air Filter 4x18
(MAGNETIC VENT 4X18)

Add a durable and reusable barrier of protection from hair, dust, and bugs with an easy to install 4x18 Magnetic Vent Cover HVAC Air Filter. Constructed from a soft PVC grid using a polypropylene mesh the filter attaches to your metal register.


In Stock! Ships in 7 to 8 business days.
Magnetic Vent Cover HVAC Air Filter 4x18
Our Price: $9.95
Retail: $11.95
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Honeywell HC-24 Humidifier Filter Replacement
(Honeywell HC-24 R)

The Honeywell HC-24 Humidifier Filter Replacement is a J replacement humidifier filter for the Holmes Tabletop Cool Mist Humidifier models. This evaporator pad is antimicrobially treated for the removal of pollutants from water and prevents the grow


In stock! Ships in 1 business day.
Honeywell HC-24 Humidifier Filter Replacement
Our Price: $16.49
Retail: $17.31
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GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
(4521)

The General Air 3FM1625 MERV8 Filter Cartridge measures 16"x25"x3", and is the correct filter for General Aire MAC1200 Series Air Cleaners. This General Aire filter will dramatically reduce airborne contaminates to provide much healthier indoor air.


In Stock! Ships in 7 to 8 business days.
GeneralAire 3FM1625 MERV 8 Filter Media Cartridge
Our Price: $19.99
Retail: $29.99
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Kenmore 83156 Carbon PreFilter 2-Pack
(KENMORE 83156 1 R)

The Kenmore 83156 Carbon PreFilter 2 Pack works with your Kenmore 83250 and 85250 model Air Purifier. These replacement carbon prefilters measure approximately 14.5" x 11" inches and will protect your HEPA filter while removing harmful particles and


In stock! Ships in 1 business day.
Kenmore 83156 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
(FFC26215TRN OKGM)

The Filters Fast 5" Trane PF BAYFTAH26M Compatible FFC26215TRN OKGM fits the following: Any air cleaner that requires a 26" x 21" x 5" filter This Filters Fast air filter is also compatible with the Trane Perfect Fit BAYFTAH26M air filter. Thi


In Stock! Ships in 10 to 11 business days.
FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
Our Price: $68.66
Retail: $109.99
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Trion Air Bear Right Angle Media Air Cleaner
(447380-010)

The Trion Air Bear Right Angle Media Air Cleaner, part number 447380-002, provides a clean and controlled indoor air environment in your home. Ideal for installations that normally require a 90 degree duct adaptor.

Free shipping within the continental United States!

Special Order. Ships in 13 days.
Trion Air Bear Right Angle Media Air Cleaner
Our Price: $121.83
Retail: $199.99
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Carrier 356066-0601 EACBAXCC0020 PreFilter 2pk
(356066-0601)

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


In stock! Ships in 1 business day.
Carrier 356066-0601 EACBAXCC0020 PreFilter 2pk
Our Price: $33.01
Retail: $39.99
You Save 17%!

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French Scents Air Filter Freshener Mountain Breeze
(42068)

The French Scents Air Filter Freshener (42068 Mountain Breeze scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area. This French Sc


Out of stock
French Scents Air Filter Freshener Mountain Breeze
Our Price: $1.99
Retail: $3.99
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Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter
(FC2400A1005)

The Honeywell FC2400A1005 is a compatible AC filter for the Aprilaire and Space Gard 2400 (filter model 401) and is also used in Research Products cabinet models 2200, 2250 and 2400. This filter boasts a MERV 10 rating.


Special Order. Ships in 7 days.
Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter
Our Price: $44.80
Retail: $49.02
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Trane 24.5x27x5 BAYFTFR24M2A Comp Trane 2-Pack
(FFC245275TRN)

The Trane BAYFTFR24M2A compatible air filter captures airborne pollutants that can cause a negative impact on respiratory health


In Stock! Ships in 1 to 2 business days.
Trane 24.5x27x5 BAYFTFR24M2A Comp Trane 2-Pack
Our Price: $54.99
Retail: $59.95
You Save 8%!

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