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All Filters : All Filters

Air Filters


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AC Filters
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Air Filter FAQ

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.

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.

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


Hunter 30940 QuietFlo HEPA Purifier Filter
(30940)

The Hunter 30940 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


In stock! Ships in 1 business day.
Hunter 30940 QuietFlo HEPA Purifier Filter
Our Price: $78.99

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Honeywell HFC40R1011 Return Grille Filter 20"x25"
(HFC40R1011)

The Honeywell HFC40R1011 20"x25" Return Air Grille Filter is a high efficiency replacement air filter for return grille air filtration applications. Honeywell replacement filters efficiently capture harmful airborne particles such as dust, pet dande


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Honeywell HFC40R1011 Return Grille Filter 20"x25"
Our Price: $49.99
Retail: $60.00
You Save 17%!

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Lennox 69H85 Whole House Air Purifier Filter
(69H85)

The Lennox 69H85 Whole House Air Purifier Filter is a replacement air filter for the EAC12-14 and EAC-14 Healthy Climate Electronic Air Cleaner from Lennox. This washable pre-filter traps large pollutants, like dust and dirt particles, and helps you


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Lennox 69H85 Whole House Air Purifier Filter
Our Price: $9.85
Retail: $14.30
You Save 31%!

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Honeywell FC40R1060 16x25 Return Air Grille Filter
(FC40R1060)

Honeywell FC40R1060 16x25 Return Air Grille AC Filter is a high efficiency, replacement air filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 16x25x4.


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Honeywell FC40R1060 16x25 Return Air Grille Filter
Our Price: $42.00
Retail: $46.00
You Save 9%!

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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.


In stock! Ships in 1 business day.
Honeywell FC40R1052 16x20 Return Air Grille Filter
As Low As: $48.99
Retail: $53.00
You Save 8%!

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Hunter 30962 QuietFlo HEPA Purifier Filter
(30962)

The Hunter 30962 QuietFlo HEPA Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.3 microns. This is a true HEPA filter and a genuine OEM Hunter part.


In stock! Ships in 1 business day.
Hunter 30962 QuietFlo HEPA Purifier Filter
Our Price: $71.99
Retail: $85.00
You Save 15%!

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French Scents Air Filter Freshener - Cinnamon
(85897)

The French Scents Air Filter Freshener (85897 Cinnamon scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area. This French Scents wh


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French Scents Air Filter Freshener - Cinnamon
Our Price: $2.99
Retail: $3.99
You Save 25%!

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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
You Save 37%!

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Filters Fast 20x20x5 Trion Compatible Filter 2PACK
(FFC20205TAB OKGM)

The FiltersFast 20x20x5 Trion Compatible Filter can be used Trion AirBear and other air cleaners requiring 20"x20"x5" filter cartridges. They remove airborne particles such as pollen, dust, dander, dust, and other allergens from your indoor air.


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Filters Fast 20x20x5 Trion Compatible Filter 2PACK
Our Price: $39.99
Retail: $94.99
You Save 58%!

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Hamilton Humidifier Evaporator Pad EP-035
(EP-035)

The Hamilton Humidifier Evaporator Pad EP-035 is a replacement evaporator pad for the Hamilton Model 8FT Humidifier. This furnace humidifier filter includes a felt drip tray wick and utilizes honeycomb filtration to capture mineral pollutants in you


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Hamilton Humidifier Evaporator Pad EP-035
Our Price: $9.99
Retail: $15.08
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FiltersFast GeneralAire Compatible 20x24x5, 2-pack
(FFC20245GA)

The Filters Fast Compatible 20x24x5 MERV 11 Air Filter can be used as a replacement for GeneralAire part number 12758. Fits Generalaire AC-1, Carrier 31MF020100, and Byrant 902BXX020.


In Stock! Ships in 12 to 13 business days.
FiltersFast GeneralAire Compatible 20x24x5, 2-pack
Our Price: $48.25

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Honeywell 20x20x5 Filter FC100A1011 - MERV 8 2pk
(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 2pk
Our Price: $43.90
Retail: $50.00
You Save 12%!

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FC40R1830 18x30 Honeywell Return Grille AC Filter
(FC40R1830)

The Honeywell FC40R1830 18x30 Return Air Grille Filter is a high efficiency, replacement air filter for return grille applications. Honeywell replacement furnace filters capture airborne particles that circulate through the furnace filter.


In stock! Ships in 1 business day.
FC40R1830 18x30 Honeywell Return Grille AC Filter
Our Price: $41.50
Retail: $68.00
You Save 39%!

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Honeywell Replacement HEPA Filter, 22500
(22500)

The Honeywell 22500 Replacement HEPA Filter fits Honeywell 17400 Series, 62500, 12500 Series, 10000, 13500, and 13501. The 25500 also fits Kenmore model 83256. Genuine Honeywell Part.


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Honeywell Replacement HEPA Filter, 22500
Our Price: $54.99
Retail: $64.99
You Save 15%!

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French Scents Air Filter Freshener Country Cotton
(286042)

The French Scents Air Filter Freshener (286042 Country Cotton Scent) is a whole home air freshener packet that is easily attached to any air filter to provide scented air throughout your entire home, business, or other indoor area.


In stock! Ships in 1 business day.
French Scents Air Filter Freshener Country Cotton
Our Price: $3.99

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Honeywell FC100A1011 Compatible 20x20x5, 2-pack
(FFC20205HON)

The Honeywell Compatible MERV 11 Air Filter can be used as an upgrade for Honeywell part number FC100A1011. Upgrade your Honeywell Media Filter today and get a better filter for the same price as the original manufacturer's brand!


In Stock! Ships in 1 to 2 business days.
Honeywell FC100A1011 Compatible 20x20x5, 2-pack
Our Price: $64.99
Retail: $69.99
You Save 7%!

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Filters Fast 4-inch MERV 8 Air Filters 6-Pack
(FFM8PLEAT 4)

The Filters Fast 4-inch MERV 8 4"Air Filters 6-pack is compatible with: Aprilaire Space-Gard Trion Air Bear Honeywell and other top name brand air conditioning filters. Usable in residential, commercial, and industrial applications, the


In Stock! Ships in 1 to 2 business days.
Filters Fast 4-inch MERV 8 Air Filters 6-Pack
Our Price: $62.99
Retail: $69.99
You Save 10%!

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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 10 to 11 business days.
Filters Fast 5" Trane BAYFTAH21M Compatible 2-Pack
Our Price: $64.66
Retail: $99.99
You Save 35%!

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Hunter 30931 HEPAtech Purifier Filter
(30931)

The Hunter 30931 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns.


In stock! Ships in 1 business day.
Hunter 30931 HEPAtech Purifier Filter
Our Price: $38.75
Retail: $49.99
You Save 22%!

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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.


In Stock! Ships in 1 to 2 business days.
Aprilaire SpaceGard 2400 Air Filter - MERV 8 2pk
Our Price: $42.99
Retail: $50.00
You Save 14%!

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Filters Fast MERV 13 Return Grille Air Filter - 5"
(FFRAG13)

Protect your health, your environment and your wallet with a Filters Fast MERV 13 Return Grille Air Filter. MERV 13 is one of the highest efficiency ratings available, and Filters Fast now offers this rating in a 5" Return Air Grille application.


In stock! Ships in 1 business day.
Filters Fast MERV 13 Return Grille Air Filter - 5"
Our Price: $39.99
Retail: $49.99
You Save 20%!

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GeneralAire F1021 MERV 13 16x25x4 Media Filter
(4572)

The General Aire F1021 MERV 13 16x25x4 Media Filter is the correct replacement filter for the GeneralAir TERSus1200, and removes airborne particles and allergens as small as 0.3 micron to improve indoor the air quality of your home dramatically.


Special Order. Ships in 6 days.
GeneralAire F1021 MERV 13 16x25x4 Media Filter
Our Price: $51.74
Retail: $59.99
You Save 14%!

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Lennox X8348 MERV 10 Filter Maintenance Kit
(X8348)

The Lennox X8348 MERV 10 Filter Maintenance Kit is a maintenance kit for the Lennox PCO-20C PureAir Air Purification System. This PureAir maintenance kit includes: one MERV 10 filter, also known as part number X6667; one catalyst insert, also known

Free shipping within the continental United States!

In stock! Ships in 1 business day.
Lennox X8348 MERV 10 Filter Maintenance Kit
Our Price: $224.30
Retail: $254.95
You Save 12%!

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Lennox 72H02 Whole House System Air Filter
(72H02)

The Lennox 72H02 Whole House System Air Filter is a replacement air filter for several Lennox model electronic whole house air purifiers. This pre-filter measures approximately 20x13x3/8 and directly replaces part number 72H0201.


In stock! Ships in 1 business day.
Lennox 72H02 Whole House System Air Filter
Our Price: $12.48
Retail: $18.27
You Save 32%!

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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


In stock! Ships in 1 business day.
GeneralAire 5FM1625 MERV 10 Filter Media Cartridge
Our Price: $29.99
Retail: $34.99
You Save 14%!

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Filters Fast - Air Filters

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