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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.

FiltersFast furnace air filters offer an affordable option to excellent indoor air quality. These replacement home furnace filters will cost you much less than what you will save on your energy efficiency.


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FiltersFast Furnace Filters product list


FiltersFast 1" Air Filters MERV 8 With Pleats 6-Pack (Good)
(FFM8 6pk)

FiltersFast Air Filters are an economical alternative if you are looking for a quality air filter without paying a premium price! FiltersFast Air Filters come in a variety of sizes and are a cost effective upgrade from simple fiberglass or ...


In Stock! Ships in 1 to 2 business days.
FiltersFast 1" Air Filters MERV 8 With Pleats 6-Pack (Good)
Our Price: $39.95
Retail: $49.99
You Save 20%!

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FiltersFast 1" Air Filters MERV 13 - Case of 6 Filters (Best)
(FFM1361)

FiltersFast MERV 13 Air Filter effectively reduces pollen, dust, pet dander, mold spores, dust mites and other allergens from indoor air. FiltersFast Merv 13 furnace filters, AC filters now available.


In Stock! Ships in 1 to 2 business days.
FiltersFast 1" Air Filters MERV 13 - Case of 6 Filters (Best)
Our Price: $57.95
Retail: $69.99
You Save 17%!

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FiltersFast 1" Air Filters MERV 11 - (Better)
(FFM11 6pk)

FiltersFast Air Filters are an economical alternative if you're looking for a quality air filter, furnace filter without paying a premium price! FiltersFast Air Filters, furnace filters, AC filters come in a variety of sizes and are a cost..


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FiltersFast 1" Air Filters MERV 11 - (Better)
Our Price: $53.50
Retail: $77.94
You Save 31%!

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FiltersFast Custom Size Air Filters
(FFCUSTAIR)

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


In Stock! Ships in 7 to 8 business days.
FiltersFast Custom Size Air Filters
Our Price: $53.99
Retail: $59.99
You Save 10%!

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FiltersFast 4-Inch Air Filters MERV 11 - 3-pack
(FF4M11)

FiltersFast Air Filters are an economical alternative if you're looking for a quality air filter without paying a premium price! FiltersFast Air Filters come in a variety of sizes and are a cost effective upgrade.


In Stock! Ships in 2 to 3 business days.
FiltersFast 4-Inch Air Filters MERV 11 - 3-pack
Our Price: $50.95
Retail: $59.99
You Save 15%!

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FiltersFast MERV 13 4" Furnace Filter - 3-Pack
(FFM136)

FiltersFast 4-inch Air Filters (FFM136) have a MERV 13 rating and are useful in a variety of settings, including homes, offices, and industrial sites. The MERV (Minimum Efficiency Reporting value) rating explains the efficiency of your filter, so a


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FiltersFast MERV 13 4" Furnace Filter - 3-Pack
Our Price: $64.95
Retail: $89.99
You Save 28%!

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FiltersFast 4-inch MERV 8 Air Filters, 3-pack
(FF4M8)

These FiltersFast Merv 8 4" air filters are compatible with top name brand AC filters such as Aprilaire, Space-Gard, Trion Air Bear and Honeywell. Sizes are 20x25x4, 16x25x4, and 20x20x4.


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FiltersFast 4-inch MERV 8 Air Filters, 3-pack
Our Price: $43.95
Retail: $49.99
You Save 12%!

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FiltersFast MERV 8- 2" Furnace Air Filters 6-Pack
(FFM86)

Upgrade your 1" air filter with our new 2" MERV 8 air filters. Like our 1" MERV 8 filters, these 2" furnace filters will reduce dust, pollen, pet dander and other contaminants from your air. By doing so, you will help eliminate allergy & sinus issues


In Stock! Ships in 3 to 4 business days.
FiltersFast MERV 8- 2" Furnace Air Filters 6-Pack
Our Price: $55.99
Retail: $69.99
You Save 20%!

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FiltersFast 259112-102 20x25x5 Replacement For Trion AirBear 2-Pack
(FFC20255TAB)

The FiltersFast Compatible 20x25x5 MERV 11 Air Filter can be used as an upgrade for Trion Air Bear part number 255649-102. Upgrade your Trion Air Bear Filter today for just a few extra dollars!


In Stock! Ships in 1 to 2 business days.
FiltersFast 259112-102 20x25x5 Replacement For Trion AirBear 2-Pack
Our Price: $45.99
Retail: $50.75
You Save 9%!

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FiltersFast FFC20255TABM8 20x25x5 Filter
(FFC20255TABM8)

The FiltersFast FFC20255TABM8 compatible filter is a replacement for the OEM Trion 20x25x5 Air Bear Media AC Filter 255649-102. This Air Bear Replacement Filter captures airborne allergens like dust, pollen, pet dander, mold, spores and smoke.


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FiltersFast FFC20255TABM8 20x25x5 Filter
Our Price: $40.98
Retail: $50.00
You Save 18%!

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FiltersFast 2" MERV 11 Air Filters 6-Pack
(FFM1162)

The FiltersFast 2" MERV 11 Air Filters are an economical alternative to genuine OEM air furnace filters of the same size and come in a convenient 6-pack value set.


In Stock! Ships in 1 to 2 business days.
FiltersFast 2" MERV 11 Air Filters 6-Pack
Our Price: $67.99
Retail: $89.99
You Save 24%!

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FiltersFast Brand Aprilaire SpaceGard 2400 MERV13
(FFC162766SGMM13)

The FiltersFast Brand Aprilaire SpaceGard 2400 MERV 13 2-Pack Air Filter is a compatible filter replacement for the Aprilaire SpaceGard 2400 Air Cleaner System.


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FiltersFast Brand Aprilaire SpaceGard 2400 MERV13
Our Price: $70.90
Retail: $99.99
You Save 29%!

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FiltersFast Brand Trion 16x25x5 Air Bear Filters MERV8 - 2-Pack
(FFC16255TABM8)

The FiltersFast Brand Trion 16x25x5 Air Bear Filters Merv8 Furnace Filter is an economical alternative to the OEM Trion 16x25x5 Air Bear Media AC Filter 255649-105.


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Trion 16x25x5 Air Bear Filters MERV8 - 2-Pack
Our Price: $33.95
Retail: $40.00
You Save 15%!

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FiltersFast Brand Honeywell FC100A1037 20x25x5, 2-pack
(FFC20255HON)

The FiltersFast Brand Honeywell FC100A1037 20x25x5 MERV 11 Air Filter can be used as an upgrade for Honeywell part number FC100A1037. Upgrade your Honeywell Media Filter today and get a better filter for the same price as the original manufacturer's


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Honeywell FC100A1037 20x25x5, 2-pack
Our Price: $50.90
Retail: $75.00
You Save 32%!

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FiltersFast Brand Trane 17.5x27x5 BAYFTFR17M 2-Pack
(FFC175275TRNM8)

The FiltersFast Brand Trane 17.5x27x5 BAYFTFR17M 2-Pack Filter is a compatible version of the genuine OEM Trane Perfect-Fit BAYFTFR17M.


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Trane 17.5x27x5 BAYFTFR17M 2-Pack
Our Price: $49.99
Retail: $70.00
You Save 29%!

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FiltersFast FC100A1029, FILCCCAR0016 16x25x5, 2-Pack
(FFC16255HON)

The FiltersFast, Carrier Compatible 16x25x5 MERV 11 Air Filter can be used as an upgrade for Honeywell part number FC100A1029. Upgrade your Honeywell Media Filter today and get a better filter for the same price as the manufacturer's brand!


In Stock! Ships in 1 to 2 business days.
FiltersFast FC100A1029, FILCCCAR0016 16x25x5, 2-Pack
Our Price: $53.95
Retail: $70.00
You Save 23%!

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FiltersFast Brand Trane 21x26x5 Perfect Fit BAYFTAH26M
(FFC26215TRNM8)

The FiltersFast Brand Trane 21x26x5 Perfect Fit BAYFTAH26M Air Filter is an economical compatible alternative for the genuine OEM 21x26x5 Trane Perfect Fit BAYFTAH26M Filter.


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Trane 21x26x5 Perfect Fit BAYFTAH26M
Our Price: $51.00
Retail: $70.00
You Save 27%!

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FiltersFast Brand Honeywell FC100A1011 20x20x5, 2-Pack
(FFC20205HON)

The FiltersFast Brand 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.
FiltersFast Brand Honeywell FC100A1011 20x20x5, 2-Pack
Our Price: $50.90
Retail: $69.99
You Save 27%!

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FiltersFast Air Filters 2" MERV 13, 6-Pack
(FFAFM13)

Upgrade your 1" filter today with a 2-inch FiltersFast MERV 13 air filter! The highest MERV Rating on the market now available in this 2" air filter by FiltersFast. Save money on your and protect your HVAC with MERV 13 furnace filters, AC filters.

Free shipping within the continental United States!

In Stock! Ships in 2 to 3 business days.
FiltersFast Air Filters 2" MERV 13, 6-Pack
Our Price: $90.99
Retail: $149.99
You Save 39%!

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FiltersFast Aprilaire SpaceGard 2200 Air Filter MERV 13
(FFC20256SGM13)

The FiltersFast Aprilaire SpaceGard 2200 Air Filter MERV 13 is a compatible replacement filter for the genuine Aprilaire 2200 & 2250 Filter Media Replacement. It is an economical alternative that fits Aprilaire 2200 Air Cleaner and Aprilaire 2250


In Stock! Ships in 1 to 2 business days.
FiltersFast Aprilaire SpaceGard 2200 Air Filter MERV 13
Our Price: $74.00
Retail: $80.00
You Save 8%!

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FiltersFast Brand 16x25x5 Honeywell FC100A1029 2-Pack
(FFC16255HONM8)

The FiltersFast Brand 16x25x5 Honeywell FC100A1029 2-Pack is a compatible version of the OEM Honeywell 16x25x5 FC100A1029 Air Filter. This filter is supported by a 30 gauge galvanized expanded metal grid.


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand 16x25x5 Honeywell FC100A1029 2-Pack
Our Price: $44.95
Retail: $59.99
You Save 25%!

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FiltersFast Replacement For Trion MERV 8 Filter 20x20x5 2-Pack
(FFC20205TABM8)

The Trion FFC20205TABM8 20x20x5 MERV 8 Compatible Air Bear Furnace Filter replacement is an economical alternative for the OEM - Trion 255649-103 Air Bear Media Filter 20x20x5.


In Stock! Ships in 1 to 2 business days.
FiltersFast Replacement For Trion MERV 8 Filter 20x20x5 2-Pack
Our Price: $42.99
Retail: $50.00
You Save 14%!

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FiltersFast Replacement For Aprilaire Space Gard 2200 20x25x6
(FFC20256SG)

The FiltersFast FFC20256SG is the correct replacement for the Aprilaire Space Gard 20x25x6.


In Stock! Ships in 1 to 2 business days.
FiltersFast Replacement For Aprilaire Space Gard 2200 20x25x6
Our Price: $60.99
Retail: $69.99
You Save 13%!

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FiltersFast Brand Trane 21x21.5x5 BAYFTAH21M 2Pack
(FFC215215TRNM8)

This FiltersFast Filter for Trane 21x21.5x5 BAYFTAH21M 2Pack is an economical compatible version of the genuine OEM Trane Perfect Fit 21.5x21x5 Filter.


In Stock! Ships in 1 to 2 business days.
FiltersFast Brand Trane 21x21.5x5 BAYFTAH21M 2Pack
Our Price: $64.99
Retail: $70.00
You Save 7%!

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FiltersFast Trane Perfect Fit BAYFTAH23M 21x23.5x5 2pk
(FFC21235TRN)

These MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These FiltersFast Air Filters specifically replace Trane part number BAYFTAH23M or FLR06073, which is a 21x23.5x5 Air Filter used in several Trane Air Cleaner.


In Stock! Ships in 1 to 2 business days.
FiltersFast Trane Perfect Fit BAYFTAH23M 21x23.5x5 2pk
Our Price: $78.95
Retail: $99.00
You Save 20%!

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