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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.


Air Filters full product list:


FiltersFast MERV13 Replaces Honeywell 16x25x5FC100A1029
(FFC16255HONM13)

The FiltersFast MERV13 Replaces Honeywell 16x25x5 FC100A1029 is the compatible version of the genuine Honeywell FC100A Series Residential Air Cleaner Filter.


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FiltersFast MERV13 Replaces Honeywell 16x25x5FC100A1029
Our Price: $75.99
Retail: $90.00
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FiltersFast FFC162766SG Replacement for Aprilaire SpaceGard 2400 16x27x6 2-Pack
(FFC162766SG)

The FiltersFast Compatible 16x27x6 MERV 11 Air Filter can be used as an upgrade for the Aprilaire Space Gard 2400. Upgrade your Space Gard AC filter today to the pre-assembled, easy to install FiltersFast Space Gard Compatible 16x27x6!


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FiltersFast FFC162766SG Replacement for Aprilaire SpaceGard 2400 16x27x6 2-Pack
Our Price: $60.90
Retail: $99.99
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Lennox X2661 Humidifier Water Panel Filter
(X2661)

This Lennox humidifier filter replacement is designed for use in Healthy Climate Humidifiers. A key component in allowing the humidifier to produce moisturized air, this water panel (or water panel evaporator) will last about 6 months.


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Lennox X2661 Humidifier Water Panel Filter
As Low As: $14.95
Retail: $24.95
You Save 40%!

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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
As Low As: $25.90
Retail: $63.99
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FiltersFast Brand Honeywell FC100A1003 16x20x5, 2-Pack
(FFC16205HON)

The FiltersFast FFC16205HON 2 pack compatible air filters replaces the Honeywell FC100A1003 and provides an array of solutions for contaminated indoor air.


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FiltersFast Brand Honeywell FC100A1003 16x20x5, 2-Pack
Our Price: $50.95
Retail: $59.95
You Save 15%!

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Honeywell HAC-801 Humidifier Filters DU3-C 3-Pack
(DU3-C)

The Honeywell HAC 801 Humidifier Filter is a compatible filter that comes in this convenient, economical 3-pack value set.


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Honeywell HAC-801 Humidifier Filters DU3-C 3-Pack
Our Price: $8.99
Retail: $14.99
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Aprilaire 12 Replacement Water Panel
(Aprilaire 12)

This is an Aprilaire 112 & 445 Humidifier Water Panel Evaporator for the Aprilaire 440 Humidifier, Aprilaire 445 Humidifier, Aprilaire 445A Humidifier, Aprilaire 448 Humidifier, Aprilaire 112 Humidifier, and Aprilaire 224 Humidifier. The Aprilaire w


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Aprilaire 12 Replacement Water Panel
As Low As: $10.75
Retail: $22.99
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Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5
(FC200E1029)

The Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5 is a replacement air filter for the Honeywell 16x25 F100 and F200 media air cleaner models. This Honeywell air filter features a MERV 13 rating that helps it remove over 97% of airborne contamina


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Honeywell FC200E1029 MERV 13 Air Filter - 16x25x5
Our Price: $41.39
Retail: $44.73
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FiltersFast MERV 8 Pleated Filters 6-Pack
(FFM8Pleat)

With an initial pressure drop of around .17, these FiltersFast 2" MERV 8 Pleated Panel Filters are comparable to or an upgrade over such other pleat filters as the American Air or AmAir PerfectPleat, the Airguard Xtreme Pleated Panel Filters ...


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FiltersFast MERV 8 Pleated Filters 6-Pack
Our Price: $57.95
Retail: $69.99
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Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter-17.5x27x1
(BAYFTFR17P4)

The Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter - 17.5x27x1 fits several air cleaner models manufactured by Trane. This Trane Perfect Fit filter is 1 inch and pleated for maximum purification of your air.


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Trane Perfect Fit BAYFTFR17P4 FLR05049 Filter-17.5x27x1
As Low As: $17.95
Retail: $24.95
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FiltersFast A35PR Replacement for Carrier P1103545
(Carrier P1103545 1R)

The Carrier P1103545 Metal Water Panel Filter measures 10" x 13-1/4" x 1-1/2" (approx), and is the correct replacement evaporator pad for a variety of humidifiers manufactured by Bryant, Carrier, Honeywell, Lennox and Totaline.


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FiltersFast A35PR Replacement for Carrier P1103545
As Low As: $7.95
Retail: $9.99
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Honeywell FC40R1003 Return Grille Filter
(FC40R1003)

The Honeywell FC40R1003 a high-efficiency, replacement filter for return grille applications. Designed to capture airborne particles that circulate through the filter. Nominal Dimension 20x20x4. Genuine Honeywell Part.


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Honeywell FC40R1003 Return Grille Filter
As Low As: $34.95
Retail: $54.99
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FiltersFast Brand Trane 21x27x5 Perfect Fit BAYFTFR21M
(FFC21275TRNM8)

The FiltersFast Brand Trane 21x27x5 Perfect Fit BAYFTFR21M Filter is an economical compatible alternative to the genuine OEM Trane 21x27x5 Perfect Fit BAYFTFR21M Filter.


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FiltersFast Brand Trane 21x27x5 Perfect Fit BAYFTFR21M
Our Price: $66.00
Retail: $70.00
You Save 6%!

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FiltersFast A35WPR Replacement For Carrier P1103545
(Carrier P1103545 R)

The Carrier P1103545 Humidifier Water Panel Filter is the correct compatible replacement for: Several models of Carrier furnace humidifiers This humidifier water panel filter measures approximately 10" x 13 1/4" x 1 1/2". This Carrier water pa


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FiltersFast A35WPR Replacement For Carrier P1103545
As Low As: $11.45
Retail: $14.99
You Save 24%!

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FiltersFast FF 30900 Replacement For Hunter 30900
(FF 30900)

The FF 30900 Filter Replacement is a compatible version of the Hunter 30900 HEPAtech Purifier Filter.


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FiltersFast FF 30900 Replacement For Hunter 30900
Our Price: $17.99
Retail: $24.99
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Lennox X8309 MERV 10 Expandable Filter Replacement
(X8309)

The Lennox X8309 MERV 10 Expandable Filter Replacement is a replacement expandable filter for the Lennox 16x25x5 model air cleaner. This pleated air filter measures approximately 16x25x5 and boasts a MERV 10 rating.


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Lennox X8309 MERV 10 Expandable Filter Replacement
Our Price: $33.95
Retail: $39.50
You Save 14%!

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Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter-21x27x5
(BAYFTFR21M2)

The Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter Kit- 21x27x5 features a MERV 8 rating for the reduction of dust, dirt, and various allergens in your air, and the improvement of indoor air quality.


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Trane Perfect Fit BAYFTFR21M2 FLR06070 Filter-21x27x5
As Low As: $44.95
Retail: $59.99
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Trion Air Bear Home Air Filter 16x25x3, 255649-101
(255649-101)

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.


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Trion Air Bear Home Air Filter 16x25x3, 255649-101
As Low As: $22.49
Retail: $35.00
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Honeywell HAC-700 Humidifier Filter B 2-Pack
(HAC-700)

This Honeywell HAC-700 humidifier filter eliminates minerals and pollutants from water and helps keep your humidifier clean and pure. This Honeywell humidifier filter has a ProTec AntiMicrobial Treatment, which helps to prevent bacteria.


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Honeywell HAC-700 Humidifier Filter B 2-Pack
As Low As: $14.55
Retail: $19.95
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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: $96.62
Retail: $149.99
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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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Lennox X7935 MERV16 Healthy Climate HCF14-16 Filter Replacement
(X7935)

TheLennox X7935 MERV16 Healthy Climate HCF14-16 Filter Replacement is a replacement filter media for the Lennox HCC14-23 Healthy Climate True Fit Cabinet. Measuring approximately 20x20x5, this MERV 16 furnace filter box will trap at least 95%

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Lennox X7935 MERV16 Healthy Climate HCF14-16 Filter Replacement
Our Price: $119.95
Retail: $149.95
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Lennox X0583 16x25x5 MERV 11 Air Cleaner Media Filter
(X0583)

This Lennox X0583 16x25x5 MERV 11 Air Cleaner Media Filter needs to be replaced every 6 months.


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Lennox X0583 16x25x5 MERV 11 Air Cleaner Media Filter
Our Price: $35.95
Retail: $49.95
You Save 28%!

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Top Tech TT-FM-1620 TechPure 16x20x4 MERV 11 Filter
(TT-FM-1620)

The TopTech TechPure TT-FM-1620 16" x 20" x 4" MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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Top Tech TT-FM-1620 TechPure 16x20x4 MERV 11 Filter
Our Price: $30.95
Retail: $39.99
You Save 23%!

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Lennox Y6608 PCO3-20-16 Healthy Climate PureAir Annual Kit
(Y6608)

Lennox Y6608 PCO3-20-16 Healthy Climate PureAir Annual Maintenance Kit.

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Lennox Y6608 PCO3-20-16 Healthy Climate PureAir Annual Kit
Our Price: $148.95
Retail: $178.54
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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