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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 X5425 MERV 16 Pleated Furnace Filter Media
(X5425)

This Lennox X5425 MERV 16 Pleated Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store. This pleated filter is a genuine MERV 16 filter.

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Lennox X5425 MERV 16 Pleated Furnace Filter Media
Our Price: $91.95
Retail: $122.10
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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.


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Honeywell Replacement HEPA Filter, 23500
Our Price: $61.25
Retail: $64.99
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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: $16.99
Retail: $19.95
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Honeywell Trane Perfect Fit Filter 24x27x5 BAYFTFR24M 3-Pack
(HTRN2427T1)

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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Honeywell Trane Perfect Fit Filter 24x27x5 BAYFTFR24M
Our Price: $150.00

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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


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3M Filtrete Dust Reduction Filter - Filtrete 300
Our Price: $42.90

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Lennox X4137 HEPA 20 Carbon PreFilter Replacement
(X4137)

The Lennox X4137 HEPA 20 Carbon PreFilter Replacement is a replacement carbon pre-filter for the Lennox Healthy Climate HEPA 20 Filtration System. This carbon pre-filter is the first stage of the HEPA 20 filtration process.


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Lennox X4137 HEPA 20 Carbon PreFilter Replacement
Our Price: $38.67
Retail: $46.95
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Honeywell FC40R1052 16x20 Return Air Grille Filter 5-Pack
(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
Our Price: $259.95

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Honeywell FC35A1001 Replacement Air Filter 16x25x5
(FC35A1001)

The Honeywell FC35A1001 is the correct replacement filter for the following air cleaners: Honeywell 16x25 F100 Media Air Cleaners Honeywell 16x25 F200 Media Air Cleaners The Honeywell FC35A1001 Replacement Air Filter 16x25x5 is a genuine Hone


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Honeywell FC35A1001 Replacement Air Filter 16x25x5
As Low As: $36.00
Retail: $37.00
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FiltersFast A35PR Replacement For SPACE-GARD 35 Filter
(SPACE-GARD 35 1R)

The SPACE-GARD 35 Humidifier Metal Water Panel Filter is the correct compatible replacement for the following models of Space-Gard/Aprilaire furnace humidifiers: 350 360 560 560A 568 600 700 760 760A 768 This Space-Gard humidifier wat


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FiltersFast A35PR Replacement For SPACE-GARD 35 Filter
As Low As: $7.95
Retail: $9.99
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Honeywell 32000146-001 Humidifier Pad for HE120
(32000146-001)

The Honeywell 32000146-001 is the Replacement Humidifier Pad for HE120. Comes complete with clips. Also known as 32000146-001/U. Geniune Honeywell Replacement Part.


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Honeywell 32000146-001 Humidifier Pad for HE120
Our Price: $21.99
Retail: $29.00
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Totaline DTLP102-1620 16x20 MERV 11 Filter
(DTLP102-1620)

The Totaline DTLP102-1620 16x20 MERV 11 Filter features a filter material that is constructed of continuous hydrophobic polyolefin fibers that will not shred or absorb moisture.


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Totaline DTLP102-1620 16x20 MERV 11 Filter
Our Price: $37.45
Retail: $45.99
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Trion Air Bear Right Angle Air Cleaner Merv 11
(447380-510)

The 447380-510 is the correct air cleaner that uses: 5" thick electrostatically charged pleated filter media.

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Trion Air Bear Right Angle Air Cleaner Merv 11
Our Price: $131.99
Retail: $149.99
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FiltersFast Trane 21x27x5 Perfect Fit BAYFTFR21M M13 x2
(FFC21275TRNM13)

FiltersFast Brand Trane 21x27x5 Perfect Fit BAYFTFR21M M13 x2 is an economical compatible version of the genuine Trane 21x27x5 Perfect Fit Air Filter.

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FiltersFast Trane 21x27x5 Perfect Fit BAYFTFR21M M13 x2
Our Price: $111.00
Retail: $140.00
You Save 21%!

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FiltersFast Replacement For Trane BAYFTFR14M2 14.5x27x5 Air Filter 2-Pack
(FFC145275TRNM8)

The Trane BAYFTFR14M2 Air Filter is a replacement furnace air filter that fits the TFM145BOFRO Perfect Fit High Efficiency Air Cleaner. This Trane filter is MERV 8 rated to reduce airborne particulates and improve indoor air quality.


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FiltersFast Replacement For Trane BAYFTFR14M2 14.5x27x5 Air Filter
Our Price: $56.99

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Lennox X8349 MERV 10 Filter Maintenance Kit
(X8349)

The Lennox X8349 MERV 10 Filter Maintenance Kit is a filter maintenance kit for the Lennox PCO-12C PureAir Air Purification System. This maintenance kit includes one MERV 10 filter (X6664), one catalyst insert (75X73), and four UV bulbs (X8149). The

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In Stock! Ships in 14 to 15 business days.
Lennox X8349 MERV 10 Filter Maintenance Kit
Our Price: $196.00
Retail: $225.25
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12488101 Refrigerator Air Filter
(12488101)

The 12488101 Refrigerator Air Filter fits some newer Amana models.


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12488101 Refrigerator Air Filter
Our Price: $12.99
Retail: $14.99
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American Metal Filter Replacement For GE WB02X10776
(OEMRCP0410)

This is a Replacement Microwave Filter (OEMRCP0410) made by American Metal Filter Company which is a compatible microwave filter replacement primarily for the GE WB02X10776 filter. This microwave filter is a combination filter composed of


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American Metal Filter Replacement For GE WB02X10776
Our Price: $12.99
Retail: $14.99
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Trion Air Bear Supreme 2000 Air Cleaner Merv 11
(455602-525)

The Trion Air Bear Supreme 2000 Air Cleaner Merv 11 is a whole house air cleaner that filters various airborne particles. With this Trion Air Bear cleaner you will be able to capture and hold pollutants from the air inside the filter, which will all

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Trion Air Bear Supreme 2000 Air Cleaner Merv 11
Our Price: $90.95
Retail: $199.99
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Honeywell 209989 Air Cleaner Pre-Filter - 16x20 2-Pack
(209989)

The Honeywell 209989 Air Cleaner Pre-Filter - 16x20 includes two 16" x 10" pre-filters for Honeywell 16" x 20" air cleaner models. This Honeywell pre-filter trap larger particulates in your air to extend the life of your air filter. This air cleaner


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Honeywell 209989 Air Cleaner Pre-Filter - 16x20
Our Price: $65.20

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RPS R14ALLM Replacement For Kenmore 83134 Carbon PreFilter 2-Pack
(KENMORE 83134 1 R)

The Kenmore 83134 Carbon PreFilter comes in this money-saving 2-pack package. The Kenmore Carbon PreFilter should be replaced every 2 to 3 months for optimum performance.


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RPS R14ALLM Replacement For Kenmore 83134 Carbon PreFilter 2-Pack
Our Price: $17.99
Retail: $19.99
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FiltersFast A10PR R Replacement For Carrier P110-0007
(Carrier P110-0007 R)

The Carrier P110-0007 is the compatible replacement for the following humidifiers: Carrier HUMBBxxx, Carrier HUMBBSBP221-A, Carrier, Carrier P110-200 and Carrier Stainless Steel SBP2212 Humidifiers.


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FiltersFast A10PR R Replacement For Carrier P110-0007
As Low As: $6.99
Retail: $10.99
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Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack 2-Pack
(HAPF92)

The Holmes HAPF92CS Carbon Odor Pre-Filter 2-pack fits the Holmes Air Purifier model HAP292. It extends the life of your air purifier's HEPA filter (Holmes model HAPF38CS) by trapping over 4000 chemicals and eliminates odors.


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Holmes HAPF92 Comp Carbon Odor Pre-Filter 2-Pack
Our Price: $15.98

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Duracraft HEP-5030 Replacement HEPA Filter
(Duracraft HEP-5030 R)

The Duracraft HEP-5030 Replacement HEPA Filter is a replacement air filter for the Duracraft DA-5030 and DA-5000C air cleaner models. This HEPA filter removes 99.7% of airborne particles as small as 0.3 microns, including pollen, mold spores, pet da


In stock! Ships in 1 business day.
Duracraft HEP-5030 Replacement HEPA Filter
Our Price: $49.99
Retail: $69.99
You Save 29%!

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GeneralAire 100328 Ventilator Filter Replacement
(4663)

The GeneralAire filter pads are for use on your GeneralAire Venitlator. This ventilator filter media will keep your unit running at its best. The 100328 filter media is a genuine OEM part from the manufacturer. These ventilator filter pads will comp


Special Order. Ships in 6 days.
GeneralAire 100328 Ventilator Filter Replacement
Our Price: $41.99
Retail: $49.99
You Save 16%!

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Lennox X8313 MERV 16 Expandable Filter Replacement
(X8313)

The Lennox X8313 MERV 16 Expandable Filter Replacement is the correct replacement for any furnace the needs a 20x25x5 filter. This expandable filter has a MERV rating of 16. The Lennox X8313 MERV 16 Expandable Filter Replacement specifica

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In Stock! Ships in 7 to 8 business days.
Lennox X8313 MERV 16 Expandable Filter Replacement
Our Price: $109.55
Retail: $131.25
You Save 17%!

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Filters Fast - Air Filters

" Thank you for your expert service when helping me get the proper filters for my old pool and filter system. The new ones are perfect and work very well. All the best! " - Jim, Alamo, CA
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