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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


Baby's Room Vent Filter Kit
(VC-B)

The BestAir Baby's Room Vent Filter is a large 12" x 14" cut-to-fit, electrostatic and carbon filter that helps to reduce airborne pollutants such as pollen, dust, dirt, bacteria, mold spores, pet dander and hair.


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Baby's Room Vent Filter Kit
Our Price: $5.99
Retail: $7.99
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BestAir Family Room/Bedroom Vent Filter Kit
(VC-F)

The BestAir Family Room/Bedroom Vent Filter Kit is an easy to install, cut-to-fit filter designed to reduce airborne pollutants like dust, pet dander, dirt, pollen, hair and other allergens.


Out of stock
BestAir Family Room/Bedroom Vent Filter Kit
Our Price: $5.99
Retail: $7.99
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Bestair All Rooms Vent Filter Kit
(VC-A)

The BestAir All Rooms Vent Filter Kit has a great prefilter for furnace and air cleaners to reduce airborne particles and pollutants such as pet dander, dust, pollen, dirt, hair and other fibers.


Out of stock
Bestair All Rooms Vent Filter Kit
Our Price: $5.99
Retail: $7.99
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Trane 21x23.5x5 Perfect Fit BAYFTAH23M Filter 2pk
(FFC23205TRNM8)

For an economical compatible version of the genuine OEM Trane BAYFTAH23M 21x23.5x5 Perfect Fit Filter, try this MERV 8 Trane 21x23.5x5 Perfect Fit BAYFTAH23M replacement filter.


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Trane 21x23.5x5 Perfect Fit BAYFTAH23M Filter 2pk
Our Price: $50.00
Retail: $70.00
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Aprilaire 104 Replacement Filter - Aprilaire 2140
(Aprilaire 104)

The Aprilaire 104 Replacement Filter is a genuine replacement media for the Aprilaire 2140 Air Cleaner.


Out of stock
Aprilaire 104 Replacement Filter - Aprilaire 2140
Our Price: $34.99
Retail: $39.99
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Universal Air Conditioner Filter by Frigidaire
(5304464983)

The Frigidaire 5304464983 Universal Air Conditioner Filter improves the performance of your air conditioner unit.


Out of stock
Universal Air Conditioner Filter by Frigidaire
Our Price: $9.99
Retail: $19.99
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Spacegard Aprilaire 2600 Filter Media Replacement
(Aprilaire 261)

This genuine Spacegard Aprilaire 2600 Filter Media Replacement, also known as the Aprilaire 261 Filter, is the replacement filter used in the Spacegard Aprilaire 2600 Air Cleaner. The Aprilaire 261 Air Filter / Aprilaire 2600 Replacement Filter is a


In Stock! Ships in 3 to 4 business days.
Spacegard Aprilaire 2600 Filter Media Replacement
Our Price: $62.99
Retail: $69.99
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GeneralAire AC-1 Filter 20x24x5 MERV 8 (2 PACK)
(FFC20245GAM8)

GeneralAire AC-1 Air Filter 20x24x5 is an economical alternative for the OEM GeneralAire AC-1 Air Filter 20x24x5. This furnace filter is part of the GeneralAire AC-1 Series of Residential Air Cleaner Replacement Filters.


In Stock! Ships in 12 to 13 business days.
GeneralAire AC-1 Filter 20x24x5 MERV 8 (2 PACK)
Our Price: $56.99
Retail: $79.99
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APF3, 9000498 Washable Foam Pre-Filter, 2pack
(9000498)

The Holmes APF3 has been discontinued with no replacement. If you are interested in purchasing a new air purifier, consider the Filtrete Ultra Clean Air Purifier for large or small rooms.


Out of stock
APF3, 9000498 Washable Foam Pre-Filter, 2pack
Our Price: $4.99
Retail: $5.99
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Whirlpool Whispure 1183050 HEPA Filter
(1183050)

This product, 1183050, has been discontinued. If you have the Whirlpool Model AP150 or AP15030 you will need to purchase filter 1183051.


Out of stock
Whirlpool Whispure 1183050 HEPA Filter
Our Price: $58.00
Retail: $65.00
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Filtrete Advanced Allergen Air Filter (Deep Blue)
(Advanced Allergen)

The Advanced Allergen Air Filter is the newest, most advanced high-performance filter from Filtrete. No Competitor's #1 Filter Performs Better! It even out performs the Filtrete Ultra Allergen--previously the #1 Performance Filter on the Market.


Out of stock
Filtrete Advanced Allergen Air Filter (Deep Blue)
Our Price: $18.99
Retail: $21.00
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Plane Clean Air Filter
(Plane Clean Air)

The Plane Clean Air Filter is a filter designed to help you breathe easier while you fly! It attaches easily to the overhead nozzle in most planes and removes 99.5% of all bacteria and viruses from the air stream! View Details for more ....


Out of stock
Plane Clean Air Filter
Our Price: $19.95
Retail: $20.95
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APF2, 9000496 Washable Foam Pre-Filter 2-pack
(APF2)

The Holmes APF2 has been discontinued with no replacement. If you are interested in purchasing a new air purifier, consider the Filtrete Ultra Clean Air Purifier for large or small rooms.


Out of stock
APF2, 9000496 Washable Foam Pre-Filter 2-pack
Our Price: $4.99
Retail: $5.99
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Holmes HAPF30 Replacement HEPA Filter
(HAPF30)

The Holmes HAPF30 Replacement HEPA filter fits Holmes Air Purifier Models HAP240, HAP242, HAP243, HAP2400, HAP2404, HAP260, HAP2604, HAP412, HAP413, HAP422, HAP433 and Bionaire BAP242, BAP422, BAP815, BAP825, and BAP826.


Out of stock
Holmes HAPF30 Replacement HEPA Filter
As Low As: $18.49
Retail: $20.99
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Filtrete Ultra Clean Air Purifier (Large Rooms)
(FAP03-RS)

The Filtrete Ultra Clean Air Purifier is "The Smart Way to Clean Your Air." More effective than a HEPA unit & 99.9% effective at capturing airborne allergens, this product is a must have for people concerned with the quality of their indoor air.

Free shipping within the continental United States!

Out of stock
Filtrete Ultra Clean Air Purifier (Large Rooms)
Our Price: $167.78
Retail: $249.99
You Save 33%!

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Holmes HAP243 Table Top Hepa Air Purifier
(HAP243)

The Holmes HAPF243 Table Top Hepa Air Purifier helps remove allergens and airborne particles from your indoor air, while reducing unpleasant odors. This table-top purifier is certified for rooms up to 10' x 11' in size.


Out of stock
Holmes HAP243 Table Top Hepa Air Purifier
Our Price: $61.49
Retail: $78.00
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Holmes HAPF56, 9000489 Air Purifier Filter
(HAPF56)

The Holmes HAPF56, 9000489 Air Purifier Filter is the replacement filter for the Holmes HAP560, HAP-560, HAP561, HAP-561, HAP570, HAP-570, HAP5604, HAP-5604, WAP5600 and WAP-5600.


Out of stock
Holmes HAPF56, 9000489 Air Purifier Filter
Our Price: $89.98
Retail: $90.98
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Trion Duct Mount HE Plus 1400, 455601-001C
(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..

Free shipping within the continental United States!

In Stock! Ships in 10 to 11 business days.
Trion Duct Mount HE Plus 1400, 455601-001C
Our Price: $369.95
Retail: $440.00
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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
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Filtrete FAP04-RC Ultra-Slim Air Purifier
(FAP04-RC)

The Filtrete FAP04-RC Ultra-Slim Air Purifier is only 4 inches thick so it can fit virtually anywhere in your home or office where cleaner air is needed! Its sleek design and features make this a desirable upgrade those looking to improve indoor air

Free shipping within the continental United States!

Out of stock
Filtrete FAP04-RC Ultra-Slim Air Purifier
Our Price: $189.00
Retail: $199.99
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Honeywell Replacement HEPA Filter, 29500
(29500)

The Honeywell 29500 Replacement HEPA Filter fits Honeywell models 50300, 53000 Series, 50311, 64500, and Kenmore model 83163. Genuine Honeywell Part.


Out of stock
Honeywell Replacement HEPA Filter, 29500
As Low As: $91.00
Retail: $143.76
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Filtrete Advanced Allergen (Deep Blue) 6-pack
(Advanced Allergen 6pack)

The Advanced Allergen Air Filter is the newest, most advanced high-performance filter from Filtrete. No Competitor's #1 Filter Performs Better! It even out performs the Filtrete Ultra Allergen--previously the #1 Performance Filter on the Market.

Free shipping within the continental United States!

Out of stock
Filtrete Advanced Allergen (Deep Blue) 6-pack
Our Price: $110.00
Retail: $126.00
You Save 13%!

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Bionaire Everfesh Air Filter - Bionaire APF20
(APF20)

The Bionaire APF20 Filter is the washable pre-filter for the Bionaire BAP336-MU Everfresh Air Exchange System. The Bionaire Everfresh Air Exchange System is an easy-to-install window unit that cycles in clean, fresh air, while cycling out undesirab


Out of stock
Bionaire Everfesh Air Filter - Bionaire APF20
Our Price: $3.99
Retail: $5.00
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Holmes HAPF58 HEPA Filter
(HAPF58)

The Holmes HAPF58 HEPA Filter is designed to fit Holmes HAP580 Air Filter and trap microscopic allergens and dust. Guaranteed HEPA filter efficiency over 99.97 % at 0.3 microns.

Free shipping within the continental United States!

Out of stock
Holmes HAPF58 HEPA Filter
Our Price: $123.99
Retail: $130.19
You Save 5%!

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Filtrete Custom Size Air Filter 6-Pack
(Custom Filtrete)

Can't find the size air filter you need? We can now provide custom size air filters to fit your needs! Custom sizes available in the Ultra Allergen Series and are subject to requirements. To view these requirements please click view details...

Free shipping within the continental United States!

Out of stock
Filtrete Custom Size Air Filter 6-Pack
Our Price: $186.81
Retail: $196.15
You Save 5%!

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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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