Different Types of Air Filters Explained

If you desire better indoor air quality, then you require an excellent air purifier. Air purifiers reduce the airborne allergens which aggravate allergies and asthma. As filthy, contaminated air flows through the air purifier, clean, fresh air flows into your home. The type of air filter in an air conditioner determines how the air purifier works - and how well it works.
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HEPA Filters

HEPA air filters set the standard for air cleaners today. From the 1940s, the U.S. Atomic Energy Commission developed HEPA (High Energy Particulate Air) filters in an effort to filter radioactive contaminants. To be categorized as a HEPA filter, it must catch a minimum of 99.97 percent of pollutants in 0.3 microns.

HEPA filtration captures particles 25-50 times smaller than the eye can see. The ultra-fine fibers in HEPA filters catch microscopic particles via a mix of diffusion, interception, and inertial impaction. With smaller particles, diffusion takes place whenever the random movement of these particles makes them collide with fibers. Interception occurs when bigger particles directly float with a fiber. When a particle's inertia contributes to its crash with a fiber, then this is known as inertial impaction.

HEGA Filters

You may also have heard of HEGA or High Efficiency Gas Adsorber filters. Specific to Austin Air, HEGA filters have to demonstrate a minimum efficiency of 99.9 percent, per criteria of the Institute of Environmental Sciences, and utilize "adsorber" filter to filter out chemicals, gases, and odors.

Adsorber filtration combines carbon or carbon/zeolite pellets into a carbon cloth filter to trap gaseous particles. Specific to the HEGA filter, the adsorber filtration method must be designed, built, filled and packaged to adhere to those specific standards. The HEGA air filter must also remove irritants like dust, pollen, mould spores, bacteria, and pet dander to be regarded as a HEGA filter.

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The Austin Air Allergy Machine Series comprise HEGA filtration. Austin Air discovered and developed the brand new HEGA technology, which involves weaving carbon into a lightweight cloth. The Austin Air Allergy Machine is the ideal air purifier for someone who wishes to remove gases, vapors, and odors as well as allergens and other particulate matter.

Activated Carbon Filters

Activated carbon filters remove gases, odors, and chemical toxins. Carbon, or activated charcoal, is treated with oxygen to open up the millions of tiny pores between the carbon atoms.

The activated charcoal adsorbs odorous compounds from gases or liquids. The expression "adsorbing" refers to the manner by which the pollutants attach to the charcoal by chemical appeal. The large surface area of the activated charcoal provides it thousands of pores for trapping pollutants. As chemicals and pollutants pass the carbon surface, they're instantly attracted and captured inside the filter.

Some carbon filters are treated with added compounds like potassium iodide or potassium permanganate which boost the carbon filter's ability to catch Volatile Organic Compounds (VOCs) and other chemically reactive gases. Activated carbon filters adsorb a wider spectrum of contaminants.

AllerAir air purifiers use an activated carbon filtration system to effectively clean indoor air. AllerAir versions include a cylindrical shape for maximum air flow, an effective four-stage filtration system, and a silent fan.

Electrostatic Filters

Like Activated Carbon filters, Electrostatic filters bring pollutants. Rather than carbon, Electrostatic filters use electrostatic charges to clean out the air. Electrostatic charges are made by pushing air through a maze of static prone fibers. As airborne particles move past the static prone fibers, they become attracted to the static charge and are captured inside the filter. The particles stay on collector plates until they are hand washed or removed by means of a HEPA vacuum cleaner.

By using static electricity, you can't need to think about replacing the filters, because most electrostatic air cleaners use collection plates to catch pollutants and can be cleaned easily. On the other hand, the collection plates have to be cleaned frequently to ensure effective air cleaning. Additionally, unlike HEPA filters, some electrostatic filters emit ozone, a harmful lung disease that may trigger asthma and allergy symptoms, as well as other respiratory issues.

Procuring an air cleaner which doesn't emit any ozone increases the amount of truly clean air in your home. Friedrich air purifiers have the best electrostatic filter on the market and emit minimal amounts of ozone.

Charged Media Filters

Charged media filters also use electrostatic energy. Made from synthetic fibers, the media filter is billed through the production process and keeps the charge during its usage. This charge attracts airborne particles, providing them an electrostatic charge before trapping them inside the fibers of a conventional filter.

Social media filters present comparatively low energy prices and are really efficient. However, because the filter becomes bloated, it becomes resistant to the airflow, making it less effective the longer soiled it becomes. Therefore, charged media filters must be changed regularly for peak performance.

Charged media air cleaners are famous for their energy-efficiency and quietness; however, a number of them may emit ozone. Blueair air purifiers utilize the best charged media filtration, do not emit ozone, and therefore are extremely quiet and efficient.

Hybrid Air Filtration Systems

The Hybrid air filtration system optimizes its effectiveness through the use of multiple technologies. Hybrid air purifiers utilize a mix of filtration procedures, each filter adding to the overall effective quality of the air purifier. Most powerful air purifiers that a use combinations of the filters listed above.

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