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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


Free Flow Room Air Conditioner Filter - 15" x 24"
(93524)

This Free Flow Room Air Conditioner Filter (1777) is a universal 15" x 24" cut to fit black foam room air conditioner filter. It filters dirt, dust, soot, pollen, and other allergens.


Special Order. Ships in 5 days.
Free Flow Room Air Conditioner Filter - 15" x 24"
Our Price: $3.00
Retail: $5.99
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GeneralAire HMK500 Filter Replacement Kit 2-Pack 2-Pack
(4610)

The GeneralAire HMK500 is the correct replacement for the following air cleaner: GeneralAire AC500 Whole House HEPA Filtration System.


Special Order. Ships in 8 days.
GeneralAire HMK500 Filter Replacement Kit 2-Pack
Our Price: $79.98

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3M Filtrete Dust Reduction Filter - Filtrete 300 6-Pack
(Filtrete 300)

The Filtrete 300 Dust Reduction Filter is a replacement non-electrostatic pleated filter that attracts and captures household dust


Special Order. Ships in 17 days.
3M Filtrete Dust Reduction Filter - Filtrete 300
Our Price: $30.90

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Trion Air Bear Media AC Filter 16x25x3 6-Pack
(255649-101 6pack)

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 as an upgrade.

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In Stock! Ships in 10 to 11 business days.
Trion Air Bear Media AC Filter 16x25x3 6-Pack
Our Price: $102.00
Retail: $132.00
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F825-0548 White Rodgers Compatible 16x26x5, 2pk
(FFC16265WR)

The Filters Fast Compatible 16x26x5 MERV 11 Air Filter can be used as an upgrade for White Rodgers part number F825-0548. Upgrade your White Rodgers Media Filter today and get a better filter for the same price as the original manufacturer's brand!


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F825-0548 White Rodgers Compatible 16x26x5, 2pk
Our Price: $54.25
Retail: $55.25
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Honeywell 14x14 MERV 11 Filter TruDRY DR90 -6 pack
(50049536-003)

The Honeywell 14x14x1 MERV 11 Air Filter- TruDRY DR90 is a replacement filter for the Honeywell TrueDry DR90 Dehumidification System. This Honeywell air filter measures 14" x 14" x 1" and has a MERV 11 rating for the reduction of airborne contaminan


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Honeywell 14x14 MERV 11 Filter TruDRY DR90 -6 pack
Our Price: $44.95

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Bionaire HAPF60 R Air Purifier Carbon Filter
(Bionaire HAPF60 R)

The Bionaire HAPF60 R Air Purifier Carbon Filter is a replacement air purifier filter that fits several models of Holmes air cleaners. This universal carbon pre-filter measures approximately 6.6" x 1.8" x 11.2" and helps deodorize the air through th


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Bionaire HAPF60 R Air Purifier Carbon Filter
Our Price: $8.95
Retail: $12.99
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Hamilton Humidifier Evaporator Pad EP-036
(EP-036)

The Hamilton EP-036 is the correct replacement for the following humdifier: Hamilton 10F flow through humidifier The Hamilton Humidifier Evaporator Pad EP-036 is the part of the humidifier that collects moisture and then distributes it into th


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Hamilton Humidifier Evaporator Pad EP-036
Our Price: $13.99
Retail: $19.99
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Lennox X5424 MERV 16 Pleated Furnace Filter Media
(X5424)

This Lennox X5424 MERV 16 Pleated Furnace Filter Media needs to be replaced every 12 months. The Lennox MERV 16 Filter is a genuine Lennox Healthy Climate boxed media air cleaner.


Special Order. Ships in 22 days.
Lennox X5424 MERV 16 Pleated Furnace Filter Media
Our Price: $98.95
Retail: $122.45
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Hunter 30915 HEPAtech Replacement Purifier Filter
(30915)

The Hunter 30915 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 30915 HEPAtech Replacement Purifier Filter
Our Price: $12.99
Retail: $19.95
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Honeywell FC200E1011 Media Filter 20x20x5- Merv 13
(FC200E1011)

The Honeywell FC200E1011 Media Filter 20x20x5- Merv 13 is a replacement air filter for the Honeywell 20X20 F100 and F200 media air cleaners. This Honeywell air filter boasts a MERV 13 rating and removes over 97% of 3 to 10 micron particles from indo


In Stock! Ships in 5 to 6 business days.
Honeywell FC200E1011 Media Filter 20x20x5- Merv 13
Our Price: $44.99

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GE WB02X10943 Compatible Microwave Filter
(OEMRCP0205)

This Microwave Filter Replacement (OEMRCP0205) made by American Metal Filter Company is a compatible replacement microwave filter primarily for the GE WB02X10943 filter. It is a recirculating charcoal carbon microwave filter for use with non-ducted


In Stock! Ships in 14 to 15 business days.
GE WB02X10943 Compatible Microwave Filter
Our Price: $3.99
Retail: $4.99
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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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Honeywell 20x20x5 Filter FC100A1011 MERV 8 2-Pack
(FFC20205HONM8)

Honeywell 20x20x5 FC100A1011 Air Filter is an economical compatible version of the OEM Honeywell FC100A1011 20"x20" Media AC Filter. To save money, this air filter replacement comes in a 2pk value set.


In Stock! Ships in 1 to 2 business days.
Honeywell 20x20x5 Filter FC100A1011 MERV 8 2-Pack
Our Price: $43.90
Retail: $50.00
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Lennox X8310 MERV 10 Expandable Filter Replacement
(X8310)

The Lennox x8310 expandable MERV 10 filter is for use in your homes filter system. Also known as the healthy climate furnace filter, the X8310 measures 20x25x5 inches. This furnace filter media will protect your home from particles such as du


In stock! Ships in 1 business day.
Lennox X8310 MERV 10 Expandable Filter Replacement
Our Price: $29.95
Retail: $39.50
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Trane 21x27x5 Perfect Fit Filter BAYFTFR21M M13 x2
(FFC21275TRNM13)

The Trane 21x27x5 Perfect Fit Filter BAYFTFR21M is an economical compatible version of the genuine Trane 21x27x5 Perfect Fit Air Filter.

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In Stock! Ships in 1 to 2 business days.
Trane 21x27x5 Perfect Fit Filter BAYFTFR21M M13 x2
Our Price: $110.00
Retail: $140.00
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Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
(Aprilaire 4119)

This Spacegard Aprilaire 2200 Filter Pleat Spacer (Aprilaire 4119) is used in the Spacegard Aprilaire 2200 Air Cleaner, Spaceguard Aprilaire 2250 Air Cleaner, and other compatible Spaceguard Aprilaire 2200 Series air cleaner models. There are five p


In stock! Ships in 1 business day.
Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
Our Price: $19.95
Retail: $24.99
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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!

In Stock! Ships in 10 to 11 business days.
Trion Air Bear Right Angle Media Air Cleaner
Our Price: $121.83
Retail: $199.99
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Honeywell 50000293-001 Post Air Filter 2-Pack 2-Pack
(50000293-001)

The Honeywell 50000293-001 is a post filter that fits the following electronic air cleaner models: Honeywell F50F Honeywell F300E The Honeywell 50000293-001 Post Air Filter - 16x10 improves the performance and efficiency of the air cleaner.


In Stock! Ships in 7 to 8 business days.
Honeywell 50000293-001 Post Air Filter 2-Pack
Our Price: $39.90

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Honeywell FC40R1102 Return Grille Filter-14x14x3 5-Pack
(FC40R1102)

The Honeywell FC40R1102 is a high-efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the AC filter. Nominal Dimension 14x14x4. Genuine Honeywell Part.


In stock! Ships in 1 business day.
Honeywell FC40R1102 Return Grille Filter-14x14x3
Our Price: $135.85

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Aprilaire #401 Compatible Media Filter 2-Pack
(SG4PR-B)

The Space-Gard MERV 11 Compatible Media Filter 2-Pack is a two pack of compatible replacement air filters for the Aprilaire Model 2400 Air Cleaner. Model #401.


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Aprilaire #401 Compatible Media Filter 2-Pack
Our Price: $89.90
Retail: $94.40
You Save 5%!

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Aprilaire #401 Compatible Media Filter 2-Pack
(SG4PR-B)

The Space-Gard MERV 11 Compatible Media Filter 2-Pack is a two pack of compatible replacement air filters for the Aprilaire Model 2400 Air Cleaner. Model #401.


In Stock! Ships in 1 to 2 business days.
Aprilaire #401 Compatible Media Filter 2-Pack
Our Price: $89.90
Retail: $94.40
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Honeywell Replacement HEPA Filter, 23500
(23500)

The Honeywell 23500 Replacement HEPA Filter fits Honeywell Enviracaire Air Purifiers models 13530, 13531, 13532, 13533 (300i), 50200, 50201, and 52000 and Sears Kenmore models 83165 and 83331. Genuine Honeywell part.


In stock! Ships in 1 business day.
Honeywell Replacement HEPA Filter, 23500
Our Price: $47.32
Retail: $64.99
You Save 27%!

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Filters Fast 5" Trane BAYFTAH21M Compatible 2-Pack
(FFC215215TRN OKGM)

The Filters Fast 5" Trane PF BAYFTAH21M Compatible FFC215215TRN OKGM fits the following: Any air cleaner that requires a 21" x 21.5" x 5" filter This Filters Fast air filter also replaces the Trane Perfect Fit BAYFTAH21M filter. This air filte


In Stock! Ships in 1 to 2 business days.
Filters Fast 5" Trane BAYFTAH21M Compatible 2-Pack
Our Price: $49.90
Retail: $99.99
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Trion Air Bear Supreme 2000 Media Air Cleaner
(455602-025)

The Trion Air Bear Supreme 2000 Media Air Cleaner, part number 455602-019, provides a clean and controlled indoor air environment in your home by removing dirt, dust, pollen and other microscopic particles from your air.


In Stock! Ships in 10 to 11 business days.
Trion Air Bear Supreme 2000 Media Air Cleaner
Our Price: $71.21
Retail: $120.74
You Save 41%!

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