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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


Lennox X0587 MERV 11 Pleated Media Filter
(X0587)

This Lennox X0587 MERV 10 Pleated Media Filter is a MERV 10 replacement furnace filter. This pleated furnace filter offers quality filtration of impurities and pollutants in the air.


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Lennox X0587 MERV 11 Pleated Media Filter
Our Price: $40.95
Retail: $49.99
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Trane BAYFTFR17M Perfect Fit Air Filter- 17.5x27x5
(HTRN1727T1)

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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Trane BAYFTFR17M Perfect Fit Air Filter- 17.5x27x5
Our Price: $46.00
Retail: $49.99
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Lennox X1152 MERV 10 Pleated Media Furnace Filter
(X1152)

The Lennox X1152 MERV 10 Pleated Media Furnace Filter is the replacement filter cartridge for several Lennox, Trion Air Bear, other air cleaner systems requiring 20x25x5 furnace filters.


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Lennox X1152 MERV 10 Pleated Media Furnace Filter
Our Price: $27.35
Retail: $29.75
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Lennox X8789 MERV 16 Filter Media Replacement
(X8789)

The Lennox X8789 MERV 16 Filter Media Replacement is the correct replacement for any HVAC system that requires a 16" x 26" x 5" filter. This Lennox Healthy Climate filter has an efficiency rating of MERV 16, the highest efficiency rating. The Len

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Lennox X8789 MERV 16 Filter Media Replacement
Our Price: $109.38
Retail: $126.95
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GeneralAire HF500 HEPA Filter for AC500
(4620)

The GeneralAire HF500 HEPA Filter for AC500 is a replacement air filter for the GeneralAire Model AC500 Air Cleaner. This HEPA filter is 99.7% efficient at reducing airborne particles down to 0.30 microns. This HEPA air filter, also known as the RHF


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GeneralAire HF500 HEPA Filter for AC500
Our Price: $94.62
Retail: $149.99
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Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack
(203369)

The Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack is a replacement pre-filter for the Honeywell model F50 and F300 air cleaners. This Honeywell air filter traps larger particles in your air to help improve your overall indoor air quality and incre


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Honeywell 203369 Pre-Filter 12.5x20x.375 2-Pack
Our Price: $43.31
Retail: $49.99
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Hunter 30928 HEPAtech Purifier Filter
(30928)

The Hunter 30928 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 30928 HEPAtech Purifier Filter
Our Price: $33.95
Retail: $39.95
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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
(4511)

The GeneralAire 5FM1625 MERV 10 Filter Media Cartridge is the correct replacement filter for the following models of air cleaners: GeneralAire MAC1400 GeneralAire MAC1400M Trion AirBear Supreme 1400 This GeneralAire replacment filter measu


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GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
Our Price: $29.99
Retail: $34.99
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Honeywell FC40R1136 18x24 Return Grille Air Filter
(FC40R1136)

The Honeywell FC40R1136 is the correct replacement for the following air return grille filters: Most air return filter grilles The Honeywell FC40R1136 18x24 Return Grille Air Filter measures 18 inches by 24 inches. This Honeywell FC40R1136 is


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Honeywell FC40R1136 18x24 Return Grille Air Filter
Our Price: $31.18
Retail: $39.99
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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


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Trane 24.5x27x5 BAYFTFR24M2A Comp Trane 2-Pack
Our Price: $54.99
Retail: $59.95
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Bionaire 611D Air Cleaner Replacement Filter
(611D R)

The Bionaire 611D Air Cleaner Replacement Filter fits the following models of air cleaners: Bionaire LP1000 Bionaire LP1500H Bionaire 83130 This Bionaire 611D replacement filter is a dual air filter cartridge, with a main filter as well as a


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Bionaire 611D Air Cleaner Replacement Filter
Our Price: $10.99
Retail: $14.99
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Trion Air Bear Cub Filter 16x25x3 MERV 11
(259112-101)

The 259112-101 is the correct filter replacement for all air cleaning sytems requiring a 16" x 25" x 3" air filter. The Trion Air Bear Cub Filter is a genuine Air Bear filter.


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Trion Air Bear Cub Filter 16x25x3 MERV 11
Our Price: $24.99
Retail: $25.95
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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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Trion Air Bear Media AC Filter 16x25x3 6-Pack
Our Price: $102.00
Retail: $132.00
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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.


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Trion 16x25x5 Air Bear Furnace Filter MERV 13 2pk
Our Price: $93.00
Retail: $100.00
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Honeywell HRF-AP1 Carbon PreFilter 2-Pack
(HRF-AP1 1 R)

The Honeywell HRF-AP1 Carbon PreFilter 2-Pack is a replacement carbon pre-filter for all models of Honeywell Round Air, Honeywell Quietcare, and Honeywell SilentComfort air purifiers. This two pack of carbon filters is cut-to-fit, reduces common odo


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Honeywell HRF-AP1 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


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FiltersFast 5" Trane BAYFTAH26M Compatible 2-Pack
Our Price: $68.66
Retail: $109.99
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GeneralAire 12758 MERV 11 Filter Media Replacement
(4001)

The GeneralAire 12758 MERV 11 Filter Media Replacement is a replacement air filter for the GeneralAire AC1 and AC22 model air cleaners. This replacement filter media features a MERV 11 rating and Micro Fiber construction for the reduction of airborn


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GeneralAire 12758 MERV 11 Filter Media Replacement
Our Price: $48.99
Retail: $63.99
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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.


In Stock! Ships in 10 to 11 business days.
Hunter 30917 HEPAtech Purifier Filter
Our Price: $16.99
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


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Honeywell FC200E1011 Media Filter 20x20x5- Merv 13
Our Price: $44.99

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Honeywell FC40R1052 16x20 Return Air Grille Filter
(FC40R1052)

The Honeywell FC40R1052 is a high-efficiency, replacement AC filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x20x4. Genuine Honeywell Part.


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Honeywell FC40R1052 16x20 Return Air Grille Filter
As Low As: $48.99
Retail: $53.00
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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter
(92X09)

This Lennox Healthy Climate Filter offers efficient air-filtration performance. This Lennox HEPA 60 carbon filter should be replaced every 2-5 years.


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Lennox 92X09 HEPA 40/60 Charcoal Carbon Filter
Our Price: $35.70
Retail: $48.25
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Aprilaire SpaceGard 2400 Air Filter - MERV 8 2pk
(FFC162766SGM8)

The Aprilaire SpaceGard 2400 Air Filter is an economical compatible alternative for the Aprilaire SpaceGard 2400 Air Cleaner Systems requiring a 16x27x6 media filter.


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Aprilaire SpaceGard 2400 Air Filter - MERV 8 2pk
Our Price: $42.99
Retail: $50.00
You Save 14%!

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General Aire 20x25 MERV10 Filter Media GA100A37
(4356)

The GeneralAire GA100A37 MERV10 Filter Media measures 20"x25x4" approx., and is the correct replacement filter for Source 1 S1 MAC 10202505, Trion Air Bear Supreme 2000, Skuttle DBO-0025-020, Ultravation 90-007 & Honeywell FC100A1037 Air Cleaners.


In stock! Ships in 1 business day.
General Aire 20x25 MERV10 Filter Media GA100A37
Our Price: $29.99
Retail: $39.99
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General Aire 16x25 MERV10 Filter Media GA100A29
(4352)

The General Aire GA100A29 16x25 MERV10 Filter Media is the correct replacement filter for Honeywell F100 Series and Honeywell F150 Series Media Style Air Cleaners. These filters remove airborne particles to 1.0 micron to provide healthier indoor air.


Special Order. Ships in 8 days.
General Aire 16x25 MERV10 Filter Media GA100A29
Our Price: $29.99
Retail: $39.99
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Filters Fast Trion Compatible 16x25x5, 2-pack
(FFC16255TAB)

The Filters Fast Compatible 16x25x5 MERV 11 Air Filter can be used as an upgrade for Trion Air Bear part number 255649-105. Upgrade your Trion Air Bear Filter today for just a few extra dollars!


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Filters Fast Trion Compatible 16x25x5, 2-pack
Our Price: $55.00
Retail: $83.00
You Save 34%!

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Filters Fast - Air Filters

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