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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


Trane Perfect Fit BAYFRAME210A Filter Kit- 21x27x5
(BAYFRAME210A)

The Trane BAYFRAME210A is an air filter kit that fits the following air cleaner model: Trane TFM210A0FR0 The Trane Perfect Fit BAYFRAME210A Filter Kit- 21x27x5 contains 1 plastic frame and 1 BAYFTFREXM expandable accordion filter. This Trane P

Free shipping within the continental United States!

Special Order. Ships in 25 days.
Trane Perfect Fit BAYFRAME210A Filter Kit- 21x27x5
Our Price: $157.72
Retail: $199.99
You Save 21%!

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Trion Air Bear Supreme 2000 Air Cleaner Merv 11
(455602-525)

The Trion Air Bear Supreme 2000 Air Cleaner Merv 11 is a whole house air cleaner that filters various airborne particles. With this Trion Air Bear cleaner you will be able to capture and hold pollutants from the air inside the filter, which will all

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In Stock! Ships in 10 to 11 business days.
Trion Air Bear Supreme 2000 Air Cleaner Merv 11
Our Price: $80.00
Retail: $199.99
You Save 60%!

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Trane BAYFRAME235A Filter Frame Kit - 23.5x5x5
(BAYFRAME235A)

The Trane BAYFRAME235A is an air filter kit that fits the following air cleaner model: Trane TFM235A0AH1 The Trane BAYFRAME235A Filter Frame Kit - 23.5x5x5 contains 1 plastic frame and 1 BAYFTAHEXM expandable accordion filter. This Trane Perfe

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Special Order. Ships in 23 days.
Trane BAYFRAME235A Filter Frame Kit - 23.5x5x5
Our Price: $150.63
Retail: $199.99
You Save 25%!

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Trane Perfect Fit BAYFTFR14W1A Prefilter 14.5x27x1 2-Pack
(BAYFTFR14W1A)

The Trane Perfect Fit BAYFTFR14W1A Prefilter 14.5x27x1 is a washable filter with a MERV 5 rating that needs to be changed every 3 months for maximum efficiency. This Trane pre-filter includes two filters that measure approximately 12 7/8" X 14 1/4"


In stock! Ships in 1 business day.
Trane Perfect Fit BAYFTFR14W1A Prefilter 14.5x27x1
Our Price: $35.08

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Trion Air Bear 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.


In Stock! Ships in 10 to 11 business days.
Trion Air Bear Cub Air Cleaner 16x25x3 Merv 11
Our Price: $84.99
Retail: $99.99
You Save 15%!

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Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 4-Pack 4-Pack
(BAYFTAH26P4A)

The Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 is a furnace air filter that fits several electronic and media air cleaner models from Trane. This Trane air filter boasts a MERV 8 rating for the reduction of particulates in your air, including


Special Order. Ships in 25 days.
Trane BAYFTAH26P4A Pleated 1 inch Filter 26x21x1 4-Pack
Our Price: $207.20

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Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5 2-Pack
(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


Special Order. Ships in 22 days.
Trane Perfect Fit BAYFTFR24M2A Filter - 24.5x27x5
Our Price: $99.46

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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 10 to 11 business days.
Trion Duct Mount HE Plus 1400, 455601-001C 16"x25"
Our Price: $369.95
Retail: $440.00
You Save 16%!

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Honeywell FC100A1052 12.5" x 20" Media Air Filter
(FC100A1052)

The Honeywell FC100A1052 12.5" x 20" Replacement Air Filter boasts an upgraded MERV 11 rating (based on ASHRAE Standard 52.2) and is used with the Honeywell Enviracaire F27F1032 Air Cleaner.


Out of stock
Honeywell FC100A1052 12.5" x 20" Media Air Filter
As Low As: $27.00
Retail: $49.02
You Save 45%!

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Trane Perfect Fit BAYFTFR24P4A Filter 24.5x28.5x1
(BAYFTFR24P4A)

The Trane Perfect Fit BAYFTFR24P4A Filter - 24.5×28.5x1 fits several air cleaner models manufactured by Trane. Featuring pleats and a depth of 1 inch, this Trane Perfect Fit filter measures approximately 24.5×28.5x1 and helps improve your overall i


In stock! Ships in 1 business day.
Trane Perfect Fit BAYFTFR24P4A Filter 24.5x28.5x1
Our Price: $16.27
Retail: $19.99
You Save 19%!

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Trane Perfect Fit Filter 21.5x21x5 BAYFTAH21M 3-Pk 3-Pack
(HTRN2121T1)

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 1 business day.
Trane Perfect Fit Filter 21.5x21x5 BAYFTAH21M 3-Pk
Our Price: $441.00

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Filters Fast Custom Size MERV-13 Filters 6 Pack
(FFCAFM13)

Filters Fast Air Filters are an economical alternative if you're looking for a quality air filter without paying a premium price! Filters Fast Air Filters are now available in custom sizes! View details for order guidelines...


In Stock! Ships in 1 to 2 business days.
Filters Fast Custom Size MERV-13 Filters 6 Pack
Our Price: $40.00
Retail: $41.00
You Save 2%!

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Filters Fast Custom Size Air Filters 6 Pack
(FFCAF)

Filters Fast Air Filters are an economical alternative if you're looking for a quality air filter without paying a premium price! Filters Fast Air Filters are now available in custom sizes! View details for order guidelines.


In Stock! Ships in 1 to 2 business days.
Filters Fast Custom Size Air Filters 6 Pack
Our Price: $40.00
Retail: $41.00
You Save 2%!

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Trion Air Bear 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.


In Stock! Ships in 10 to 11 business days.
Trion Air Bear Supreme 20x20 Media Air Cleaner
Our Price: $75.99
Retail: $120.74
You Save 37%!

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Trion Air Bear 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 10 to 11 business days.
Trion Air Bear Supreme 1400 Air Cleaner Merv 11
Our Price: $109.99
Retail: $129.99
You Save 15%!

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Trion Air Bear Supreme 20x20 Air Cleaner Merv 11
(455602-725)

The Trion Air Bear Supreme 20x20 Air Cleaner is a for your whole house air cleaner. The Trion Supreme 20x20 features an easy installation that mounts directly to your heating or cooling system.The Trion 45560

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In Stock! Ships in 10 to 11 business days.
Trion Air Bear Supreme 20x20 Air Cleaner Merv 11
Our Price: $99.99
Retail: $109.99
You Save 9%!

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Trion Air Bear 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


In Stock! Ships in 10 to 11 business days.
Trion Air Bear Cub Air Cleaner 16x25x3 Merv  8
Our Price: $79.99
Retail: $99.99
You Save 20%!

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ED Lab Indoor Air Home Mold Test Kit 10-Pack
(BMSC)

This ED Lab Indoor Air Home Mold Test Kit is used to screen the air in your home for different mold types as well as fungal propagules. Filters Fast has teamed up with Environmental Diagnostics Lab (ED Lab) to provide this advanced home mold testing


In Stock! Ships in 5 to 6 business days.
ED Lab Indoor Air Home Mold Test Kit
Our Price: $519.90

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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: $2,000.00
Retail: $2,001.00
You Save 0%!

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Filters Fast MERV 8 Trion Compatible Filter 2-Pack
(FFC16255TAB OKGM)

The Filters Fast MERV 8Trion Compatible Filter 3PACK is the correct replacement for the following: all Trion Air Bear cleaners requiring a 16" x 25" x 5" media filter cartridge This Filters Fast air filter has a MERV 8 rating. This means th


In Stock! Ships in 10 to 11 business days.
Filters Fast MERV 8 Trion Compatible Filter 2-Pack
Our Price: $55.00
Retail: $83.00
You Save 34%!

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Totaline CMF1620 Merv 11 Filter 2-Pack-16x22x5
(Totaline CMF1620)

The Totaline CMF1620 Air Filter 2-Pack-16x22x5 removes atmospheric and household dust


In Stock! Ships in 1 to 2 business days.
Totaline CMF1620 Merv 11 Filter 2-Pack-16x22x5
Our Price: $54.99
Retail: $68.74
You Save 20%!

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Honeywell FC40R1185 Return Air Grille Filter 18x18 5-Pack
(FC40R1185)

The Honeywell FC40R1185 Return Air Grille Filter 18x18 is a replacement air filter that mounts in most return filter grilles. The Honeywell return air grille filter features four inches of depth, which provides a higher efficiency than standard one


In Stock! Ships in 7 to 8 business days.
Honeywell FC40R1185 Return Air Grille Filter 18x18
Our Price: $242.50

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Trane Perfect Fit BAYFTFR24W1A Prefilter 24.5x27x1 6-Pack 2-Pack
(BAYFTFR24W1A)

The Trane BAYFTFR24W1A is a pre-filter for use in the following application: 24 1/2 inch enclosures The Trane Perfect Fit BAYFTFR24W1A Prefilter 24.5x27x1 has a nominal size of 24 1/2 inches x 27 inches x 1 inch. The actual size of this Trane


Special Order. Ships in 38 days.
Trane Perfect Fit BAYFTFR24W1A Prefilter 24.5x27x1 6-Pack
Our Price: $167.94

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Trane BAYFRAME245A Filter Frame Kit - 24.5x27x5 2-Pack
(BAYFRAME245A)

The Trane BAYFRAME245A is an air filter kit that fits the following air cleaner model: Trane TFM245A0FR0 The Trane BAYFRAME245A Filter Frame Kit - 24.5x27x5 contains 1 plastic frame and 1 BAYFTFREXM expandable accordion filter. This Trane Perf

Free shipping within the continental United States!

Special Order. Ships in 25 days.
Trane BAYFRAME245A Filter Frame Kit - 24.5x27x5
Our Price: $392.72

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Trane Perfect Fit BAYFRAME260A Filter Kit- 26x21x5 50-Pack
(BAYFRAME260A)

The Trane Perfect Fit BAYFRAME260A Filter Kit- 26x21x5 is a furnace air filter that can replace the Trane BAYFTAH26M PerfectFit air filter. This Trane furnace filter can be used in the TFM260A0AH1 model air cleaner and measures approximately 26" x 2

Free shipping within the continental United States!

Special Order. Ships in 17 days.
Trane Perfect Fit BAYFRAME260A Filter Kit- 26x21x5
Our Price: $8,849.50

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Filters Fast - Furnace Filters

" Just to express my complete satisfaction with your ordering process and, of course, great pricing. When I need a replacement of refrigerator or HVAC filters, I'll be contacting you again. " - Frank, Corona, CA
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