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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.

Aprilaire media filters should be replaced every year to maintain good air quality and furnace performance.


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Aprilaire Furnace Filters product list


Aprilaire 413 Filter Media Replacement 2410, 4400
(Aprilaire 413)

The Aprilaire 413 replacement air filter media gives users the best possible indoor air purification performance. The accordion style filter media is self-seating and spacing for easy installation.


In stock! Ships in 1 business day.
Aprilaire 413 Filter Media Replacement 2410, 4400
As Low As: $35.95
Retail: $49.99
You Save 28%!

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Aprilaire 201 Replacement Filter for 2200 & 2250 Air Cleaners
(Aprilaire 201)

The Aprilaire 201 replacement high-efficiency filter helps makes household air easier to breathe.


In stock! Ships in 1 business day.
Aprilaire 201 Replacement Filter for 2200 & 2250 Air Cleaners
As Low As: $25.99
Retail: $49.99
You Save 48%!

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Aprilaire Spacegard 2200 Air Cleaner Seal Kit
(Aprilaire 4725)

The Aprilaire Spacegard 2200 Air Cleaner Seal Kit (Aprilaire 4725) is for use with the Aprilaire 2200 air cleaner and the Space-Gard 2200 air cleaner. This kit includes the necessary seals which are used to seal the following contacts: (1) between t


Special Order. Ships in 11 days.
Aprilaire Spacegard 2200 Air Cleaner Seal Kit
Our Price: $22.30
Retail: $34.99
You Save 36%!

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Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
(Aprilaire 4119)

This Spacegard Aprilaire 2200 Filter Pleat Spacer (Aprilaire 4119) is used in the Spacegard Aprilaire 2200 Air Cleaner, Spaceguard Aprilaire 2250 Air Cleaner, and other compatible Spaceguard Aprilaire 2200 Series air cleaner models. There are five p


In stock! Ships in 1 business day.
Aprilaire 4119 - Spacegard Air Filter Pleat Spacer
Our Price: $19.95
Retail: $24.99
You Save 20%!

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Spacegard Aprilaire 2600 Filter Media Replacement
(Aprilaire 261)

This genuine Spacegard Aprilaire 2600 Filter Media Replacement, also known as the Aprilaire 261 Filter, is the replacement filter used in the Spacegard Aprilaire 2600 Air Cleaner. The Aprilaire 261 Air Filter / Aprilaire 2600 Replacement Filter is a


Special Order. Ships in 11 days.
Spacegard Aprilaire 2600 Filter Media Replacement
Our Price: $62.99
Retail: $69.99
You Save 10%!

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FiltersFast 5" Aprilaire Compatible Filter 2-Pack
(FFC20256SG OKGM)

The FiltersFast 5" Aprilaire Compatible FFC20256SGOKGM is a compatible replacement filter that is an upgrade over the Aprilaire Space Gard 2200 air filter. This 6" air filter features a MERV 8 rating while the Aprilaire 2200 features a lower MERV 1


In Stock! Ships in 10 to 11 business days.
FiltersFast 5" Aprilaire Compatible Filter 2-Pack
Our Price: $66.66
Retail: $104.99
You Save 37%!

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Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 12-Pack
(FC2400A1005)

The Honeywell FC2400A1005 is a compatible AC filter for the Aprilaire and Space Gard 2400 (filter model 401) and is also used in Research Products cabinet models 2200, 2250 and 2400. This filter boasts a MERV 10 rating.


Out of stock
Aprilaire Space Gard 2400 Compat 16x27x6 AC Filter 12-Pack
Our Price: $537.60
Retail: $588.24
You Save 9%!

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Filters Fast - Aprilaire Furnace Filters

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