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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 full product list:


BestAir CBW9 Replacement For Bionaire 900 2-Pack
(CBW9)

The 900 Humidifier Filters Two-Pack, is a humidifier wick filter that works in your Bionaire Humidifier. The humidifier filter wick works with your Bionaire humidifier to produce the best humidified air quality for your home. These Bionaire


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BestAir CBW9 Replacement For Bionaire 900 2-Pack
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Honeywell HC-888 Replacement Humidifier Filter
(HC-888)

The Honeywell HC-888 Humidifier Filter Replacement is a genuine Honeywell filter. This HC888 humidifier filter reduces waterborne contaminants and minerals in your water.


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Honeywell HC-888 Replacement Humidifier Filter
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Carrier EXPXXFIL0020 EZ-FLEX Air Purifier Filter
(EXPXXFIL0020)

The Carrier EXPXXFIL0020 Air Purifier Filter is a genuine OEM factory replacement air filter for Bryant, Carrier, Payne, Day-Night, as well as certain Honeywell, Space-Gard, and Trion air purifiers. It will fit many compatible air purifiers includin


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Carrier EXPXXFIL0020 EZ-FLEX Air Purifier Filter
Our Price: $43.95
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Skuttle Air Cleaner Filter 25x16x5 DB-25-16
(000-0448-001)

Skuttle 000-0448-001 Air Cleaner Filters measure 25"x16"x5", & effectively reduce airborne particles such as pet dander, mold spores, dust, dust mites, pollen and other allergens from your indoor environment.


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Skuttle Air Cleaner Filter 25x16x5 DB-25-16
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FiltersFast Brand Trane 21x21.5x5 BAYFTAH21M 2-Pack
(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.


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FiltersFast Brand Trane 21x21.5x5 BAYFTAH21M 2-Pack
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FiltersFast Trane Perfect Fit BAYFTAH26M 21x26x5 2pk
(FFC26215TRN)

These FiltersFast MERV 11 Furnace Filters are compatible upgrades over Trane Perfect Fit Air Filters. These FiltersFast Air Filters specifically replace Trane part number BAYFTAH26M, which is a 21x26x5 Air Filter used in several Trane Air Cleaner

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FiltersFast Trane Perfect Fit BAYFTAH26M 21x26x5 2pk
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Trion Air Bear Media Filter 3-Pack 16x25x5, MERV 8
(255649-105 3pack)

The Trion Air Bear Media AC Filter 16x25x5 part number 255649-105 is a genuine Trion Air Bear pleated media A/C filter. The 255649105 can be used in Trion models Air Bear Supreme 1400 and Trion Air Bear 1400.


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Trion Air Bear Media Filter 3-Pack 16x25x5, MERV 8
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Lennox X6667 MERV 11 Air Filter Media Replacement
(X6667)

The Lennox X6667 MERV 11 Air Filter Media Replacement is a replacement air filter for Lennox Healthy Climate PureAir PCO-20 air cleaners. This box media utilizes a MERV 11 pleated filter that captures particles as small as 0.3 microns in size.


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Lennox X6667 MERV 11 Air Filter Media Replacement
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Retail: $39.99
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Honeywell FC40R1029 20x30x3 Return Grille Filter
(FC40R1029)

The Honeywell FC40R1029 is a high-efficiency, replacement filter for return grille applications that will capture airborne particles as small as 0.3 microns in size.


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Honeywell FC40R1029 20x30x3 Return Grille Filter
Our Price: $47.95
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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
(X6670)

This Lennox X6670 Fir Filter Media is able to capture particles as small as 0.3 microns. This Lennox Pleated Filter Media offers greater dust-holding ability.


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Lennox X6670 MERV 11 Pleated Filter Media-16x25x5
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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
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FiltersFast D88 R Replacement For Honeywell HC888 Humidifier Wick Filter
(D88)

The HC888 Humidifier Replacement Filter Wick is also referred to as the D88, and helps your humidifier run at peak performance.The humidifier wick filter helps water move at a slower pace through the humidifier, allowing the maximum amount of water


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FiltersFast D88 R Replacement For Honeywell HC888 Humidifier Wick Filter
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Retail: $9.99
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TopTech DTT-FM-2025 20x25x4 MERV 11 Filter
(DTT-FM-2025)

The TopTech DTT-FM-2025 20x25x4 MERV 11 Filter removes many allergens, dust, pollen and other airborne pollutants.


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TopTech DTT-FM-2025 20x25x4 MERV 11 Filter
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Honeywell Enviracaire HC26A 1008 Humidifier Pad
(HC26A 1008)

The Honeywell Enviracaire Elite HC26A 1008 Humidifier Pad replaces the humidifier pad in the Honeywell HE260A,B Bypass Flow-Through Humidifier, HE360A1019, HE360B1009 Powered Flow-Through Humidifier or Aprilaire 560 and 760 humidifiers.


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Honeywell Enviracaire HC26A 1008 Humidifier Pad
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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
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FiltersFast A10PR R Replacement for Trane BAYPAD01A1010A
(BAYPAD01A1010A 1 R)

The FiltersFast A10PR R is the correct replacement for the Trane BAYPAD01A1010A 1 R and for the following humidifier models:


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FiltersFast A10PR R Replacement for Trane BAYPAD01A1010A
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3M Filtrete FAPF03 Replacement Air Filter Media
(FAPF03)

The Filtrete FAPF03 Air Filter is the replacement air cleaning filter for the Filtrete Ultra Clean Air Purifier FAP03-RS, FAP03. This electrostatically charged filter attracts & retains microparticles that can aggravate allergies and ...


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3M Filtrete FAPF03 Replacement Air Filter Media
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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.


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FiltersFast Trane Perfect Fit BAYFTAH23M 21x23.5x5 2pk
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FiltersFast Brand Trion Air Bear Filter 20x25x5 2-Pack
(FFC20255TABM13)

The FiltersFast Brand Trion Air Bear Filter 20x25x5 MERV13 2-Pack is a compatible version of the genuine Trion Air Bear Media AC Filter 20x25x5, 255649-102.


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FiltersFast Brand Trion Air Bear Filter 20x25x5 2-Pack
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Trane BAYFTFREXM2 Expandable Replacement-2-Pack
(BAYFTFREXM2)

The Trane BAYFTFREXM2 Expandable Replacement Media is a pair of furnace air filters that can only be used with a Retrofit Frame Kit already installed. This Trane air filter measures approximately 25" in length x 5" in thickness. This Trane Perfect F


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Trane BAYFTFREXM2 Expandable Replacement-2-Pack
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Skuttle Air Cleaner Filter Replacement for DB2520
(448-002)

The Skuttle Air Cleaner Filter Replacement for DB2520 is a replacement air filter for the Skuttle DB-25-20 Air Cleaner. The deep-pleated, MERV 8 filter media of this replacement filter provides high-volume service that traps airborne particles to pr


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Skuttle Air Cleaner Filter Replacement for DB2520
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GeneralAire GA19 Humidifier Vapor Pad Replacement
(7919)

The GeneralAire GA19 Humidifier Vapor Pad Replacement is a replacement vapor pad for the GeneralAire Elite Models 900 and 1000. Air passes through the GA19 vapor pad where moisture is absorbed into the heating system after which the home is humidifi


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GeneralAire GA19 Humidifier Vapor Pad Replacement
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Trane BAYFTAHEXM2 Expandable Replacement Media
(BAYFTAHEXM2)

The Trane BAYFTAHEXM2 Expandable Replacement Media is a set of two furnace air filters that require the use of a Retrofit Frame Kit to be operable. This Trane Perfect Fit filter measures approximately 20 inches in length and 5 inches in thickness. T


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Trane BAYFTAHEXM2 Expandable Replacement Media
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Lennox X0583 MERV 11 Air Cleaner Media Filter
(X0583)

This Lennox X0583 MERV 11 Air Cleaner Media Filter needs to be replaced every 6 months. The Lennox Furnace Filter Media is an excellent filter for someone who wants a significant upgrade over standard fiberglass filters from the hardware store.


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Lennox X0583 MERV 11 Air Cleaner Media Filter
Our Price: $35.95
Retail: $104.00
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Trion 255649-103 Air Bear Media Filter 20x20x5
(255649-103)

Fight air quality problems around your home with the Trion Air Bear 255649-103 replacement air filter media. The 20x20x5 deep pleated design offers greater surface area for a higher capture of airborne particles that contribute to allergies.


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Trion 255649-103 Air Bear Media Filter 20x20x5
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