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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.

Routine maintenance is a critical part of caring for your home. One area that should not be overlooked is replacing your home’s furnace filters on a regular basis following the manufacturers recommended guidelines. By doing this, you will help prolong the life of your system, as well as help eliminate indoor air contaminates.

Air filters help rid your home of a variety of air pollutants including smog, smoke, pollen, bacteria, pet dander, mold spores, dust, dust mites, debris and virus carrying particles. The MERV rating on furnace filters can help guide you in this area. The higher the rating, the more efficient the air filter will be at eliminating indoor contaminates.

Filtrete, Trion, 3M and Honeywell all manufacture high quality filters in a variety of sizes to meet all of your air filtration needs.


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Furnace Filters product list


Trion MERV 8 Comp. Air Bear Furnace Filter-20x20x5
(FFC20205TABM8)

The Trion FFC20205TABM8 20x20x5 MERV 8 Compatible Air Bear Furnace Filter replacement is an economical alternative for the OEM - Trion 255649-103 Air Bear Media Filter 20x20x5.


In Stock! Ships in 1 to 2 business days.
Trion MERV 8 Comp. Air Bear Furnace Filter-20x20x5
Our Price: $37.90
Retail: $50.00
You Save 24%!

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Trane BAYFTFREXM2 Expandable Replacement-2 Pack
(BAYFTFREXM2)

The Trane BAYFTFREXM2 Expandable Replacement Media is a pair of furnace air filters that can only be used with a Retrofit Frame Kit already installed. This Trane air filter measures approximately 25" in length x 5" in thickness. This Trane Perfect F


In stock! Ships in 1 business day.
Trane BAYFTFREXM2 Expandable Replacement-2 Pack
Our Price: $52.06
Retail: $59.99
You Save 13%!

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Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
(FFC215215TRNM8)

This Trane Perfect Fit 21x21.5x5 BAYFTAH21M is an economical compatible version of the genuine OEM Trane Perfect Fit 21.5x21x5 Filter.


In Stock! Ships in 1 to 2 business days.
Trane 21x21.5x5 Perfect Fit BAYFTAH21M Filter 2pk
Our Price: $63.99
Retail: $70.00
You Save 9%!

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Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
(FFC21275TRNM8)

The Trane 21x27x5 Perfect Fit BAYFTFR21M Filter is an economical compatible alternative to the genuine OEM Trane 21x27x5 Perfect Fit BAYFTFR21M Filter.


In Stock! Ships in 1 to 2 business days.
Trane 21x27x5 Perfect Fit BAYFTFR21M Filter 2pk
Our Price: $65.00
Retail: $70.00
You Save 7%!

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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
(FFC16255HONM13)

The Honeywell 16x25x5 Filter is the compatible version of the genuine Honeywell FC100A Series Residential Air Cleaner Filter.


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Honeywell 16x25x5 Filter FC100A1029 MERV 13 2 pack
Our Price: $74.99
Retail: $90.00
You Save 17%!

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Honeywell FC40R1029 20x30x3 Return Grille Filter
(FC40R1029)

The Honeywell FC40R1029 is a high-efficiency, replacement filter for return grille applications that will capture airborne particles as small as 0.3 microns in size.


In stock! Ships in 1 business day.
Honeywell FC40R1029 20x30x3 Return Grille Filter
Our Price: $45.00
Retail: $74.81
You Save 40%!

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Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
(FFC21235TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTAH23M or FLR06073, which is a 21x23.5x5 Air Filter used in several Trane Air Cleaner.


In Stock! Ships in 1 to 2 business days.
Trane Perfect Fit BAYFTAH23M Compat. 21x23.5x5 2pk
Our Price: $98.00
Retail: $99.00
You Save 1%!

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Honeywell 20X25 Air Filter Replacement - MERV 13
(FC200E1037)

The Honeywell 20X25 Air Filter Replacement is a MERV 13 rated high efficiency media air cleaner that can be used in all compatible size air ducts plus Honeywell cleaners that require a 20"W x 25"L x 4"D filter. It will also fit all Aprilaire, Space-


In stock! Ships in 1 business day.
Honeywell 20X25 Air Filter Replacement - MERV 13
Our Price: $46.99
Retail: $49.99
You Save 6%!

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Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
(FFC20255TABM13)

The Trion 20x25x5 Air Bear Furnace Filter is a compatible version of the genuine Trion Air Bear Media AC Filter 20x25x5, 255649-102.


In Stock! Ships in 1 to 2 business days.
Trion Air Bear Comp Furnace Filter M13 20x25x5 2pk
Our Price: $74.99
Retail: $80.00
You Save 6%!

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Honeywell FC40R1003 Return Grille Filter
(FC40R1003)

The Honeywell FC40R1003 a high-efficiency, replacement filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 20x20x4. Genuine Honeywell Part.


In stock! Ships in 1 business day.
Honeywell FC40R1003 Return Grille Filter
As Low As: $43.50
Retail: $73.34
You Save 41%!

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Trane Perfect Fit BAYFTFR21M Compat 21x27x5 2pk
(FFC21275TRNM11)

These MERV 11 compatible Furnace Filters are replacement filters for Trane Perfect Fit Air Filters. These Filters Fast Air Filters replace Trane part number BAYFTFR21M or FLR06070 , which is used in several Trane Air Cleaner models.


In Stock! Ships in 1 to 2 business days.
Trane Perfect Fit BAYFTFR21M Compat 21x27x5 2pk
Our Price: $99.00
Retail: $100.00
You Save 1%!

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Trion 16x25x3 Air Bear Cub Filter - MERV 8 3-Pack
(FFC16253TABM8)

The Trion 16x25x3 Air Bear Cub Filter is an odor ban compatible MERV 8 filter replacement. This Air Bear Cub Filter is also known as part number FFC16253TABM8.


In Stock! Ships in 1 to 2 business days.
Trion 16x25x3 Air Bear Cub Filter - MERV 8 3-Pack
Our Price: $39.99
Retail: $59.99
You Save 33%!

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Trane Perfect Fit BAYFTAH26M2A Filter 26x21x5
(BAYFTAH26M2A)

The Trane Perfect Fit BAYFTAH26M2A Filter 26x21x5 is a furnace air filter that fits several high efficiency air cleaners from Trane. This Trane air filter boasts a MERV 8 rating for the reduction of particulates in your air, including dust, dirt, an


In stock! Ships in 1 business day.
Trane Perfect Fit BAYFTAH26M2A Filter 26x21x5
Our Price: $44.16
Retail: $49.99
You Save 12%!

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Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
(FFC21235TRNM8)

For an economical alternative to the genuine OEM Trane 21x23x5 Perfect Fit BAYFTAH23M Filter, try this compatible Trane MERV 8 21x23x5 Perfect Fit BAYFTAH23M Filter.


In Stock! Ships in 1 to 2 business days.
Trane 21x23x5 Perfect Fit BAYFTAH23M Filter 2pk
Our Price: $65.00
Retail: $70.00
You Save 7%!

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Trane Perfect Fit BAYFTAH23M2 20.1" x 23.2" x 5"
(BAYFTAH23M2)

The Trane Perfect Fit BAYFTAH23M2 23.5x21x5 Air Filter is a replacement air filter for the Trane model BAYFRAME215A and TFM215A0AH1 air cleaners. The Trane Perfect Fit filter measures approximately 23.5" x 21" x 5" and features a MERV 8 rating for t


In stock! Ships in 1 business day.
Trane Perfect Fit BAYFTAH23M2  20.1" x 23.2" x 5"
As Low As: $41.99
Retail: $50.99
You Save 18%!

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Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5
(BAYFTAH21M2)

The Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5 fits the TFM215B0AH0 Perfect Fit High Efficiency Air Cleaner. This Trane Perfect Fit filter has a MERV 8 rating that helps purify your air and improve overall indoor air quality. Measuring appro


In stock! Ships in 1 business day.
Trane BAYFTAH21M2 Replacement Air Filter 21.5x21x5
Our Price: $42.93
Retail: $49.99
You Save 14%!

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Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
(FFC20205TABM13)

The Trion 20x20x5 Air Bear Furnace Filter is the compatible version of the genuine Trion Air Bear Media Filter 20x20x5, 255649-103.


In Stock! Ships in 1 to 2 business days.
Trion 20x20x5 Air Bear Furnace Filter MERV 13 2pk
Our Price: $59.99
Retail: $80.00
You Save 25%!

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Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5
(BAYFTFR17M2)

The Trane BAYFTFR17M2 is a Trane Perfect Fit filter for use in the following enclosures: Trane Perfect Fit Trane Air-Tite American Standard Perfect Fit American Standard Air-Tite The Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5 has no


In stock! Ships in 1 business day.
Trane BAYFTFR17M2 Replacement Air Filter 17.5x27x5
Our Price: $42.99
Retail: $49.99
You Save 14%!

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Goodman M0-1056 MERV 11 Air Filter 2-Pack-16x22x5
(Goodman M0-1056)

The Goodman M0-1056 replacement creates a barrier inside household heating and cooling systems to prevent atmospheric containments from circulating into the air.


In Stock! Ships in 1 to 2 business days.
Goodman M0-1056 MERV 11 Air Filter 2-Pack-16x22x5
Our Price: $54.99
Retail: $68.74
You Save 20%!

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Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
(FFC175275TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These Filters Fast Air Filters specifically replace Trane part number BAYFTFR17M or FLR06069, which is a 17.5x27x5 Air Filter used in several Trane Air Cleaner.


In Stock! Ships in 1 to 2 business days.
Trane Perfect Fit BAYFTFR17M Compat. 17.5x27x5 2pk
Our Price: $69.99
Retail: $99.99
You Save 30%!

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Trion Air Bear Home Air Filter 16x25x3, 255649-101
(255649-101)

The Trion Air Bear Media AC Filter 16x25x3 part number 255649-101 is a genuine Trion Air Bear pleated media filter. The 255649101 can be used in Trion models Air Bear TM and Air Bear Cub. Replaces 229990-101 and 229990-001.


In Stock! Ships in 10 to 11 business days.
Trion Air Bear Home Air Filter 16x25x3, 255649-101
As Low As: $18.49
Retail: $35.00
You Save 47%!

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White Rodgers 20x26x5 Filter F825-0549 MERV 8 2pk
(FFC20265WRM8)

The White Rodgers 20x26x5 Air Filter F825-0549 is a compatible alternative for the OEM White Rodgers 20x26x5 Air Filter. This filter is made of fine carbon powder bonded to lofted polyester media for odor reduction.


In Stock! Ships in 1 to 2 business days.
White Rodgers 20x26x5 Filter F825-0549 MERV 8 2pk
Our Price: $40.99
Retail: $50.00
You Save 18%!

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3M Filtrete Dust & Pollen Furnace Filter 6-Pack LB
(Dust and Pollen 6-Pk)

The 3M Filtrete Dust & Pollen Furnace Filter is an electrostatically charged furnace filter ideal for high velocity HVAC systems. 3M Filtrete filters are an economical upgrade from cheap one month filters.


Special Order. Ships in 11 days.
3M Filtrete Dust & Pollen Furnace Filter 6-Pack LB
Our Price: $57.25
Retail: $60.11
You Save 5%!

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Trane BAYFTAHEXM2 Expandable Replacement Media
(BAYFTAHEXM2)

The Trane BAYFTAHEXM2 Expandable Replacement Media is a set of two furnace air filters that require the use of a Retrofit Frame Kit to be operable. This Trane Perfect Fit filter measures approximately 20 inches in length and 5 inches in thickness. T


In stock! Ships in 1 business day.
Trane BAYFTAHEXM2 Expandable Replacement Media
Our Price: $69.20
Retail: $79.99
You Save 13%!

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Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5
(FC200E1029)

The Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5 is a replacement air filter for the Honeywell 16x25 F100 and F200 media air cleaner models. This Honeywell air filter features a MERV 13 rating that helps it remove over 97% of airborne contamina


In Stock! Ships in 1 to 2 business days.
Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5
Our Price: $39.39
Retail: $39.99
You Save 2%!

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Filters Fast - Furnace Filters

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