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Different Types of Air Filters Explained

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

HEPA air filters establish the standard for air cleaners now. In 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 has to capture no less than 99.97% of pollutants at 0.3 microns.

HEPA filter captures particles 25-50 times smaller than the eye could see. The ultra-fine fibers in HEPA filters capture microscopic particles via a combination of diffusion, interception, and inertial impaction. With smaller particles, diffusion occurs whenever the random motion of these particles makes them collide with fibers. Interception occurs when bigger particles directly collide with a fiber. When a particle's inertia contributes to its crash with a fiber, this is referred to as inertial impaction.

HEGA Filters

You might have also heard of HEGA or High Efficiency Gas Adsorber filters. Particular to Austin Air, HEGA filters must exhibit a minimum efficacy of 99.9%, per standards of the Institute of Environmental Sciences, also utilize "adsorber" filter to filter out chemicals, gases, and odors.

Adsorber filtration combines carbon or carbon carbon/zeolite pellets into a carbon cloth filter to trap gaseous particles. Specific into the HEGA filter, the adsorber filtration system must be designed, assembled, filled and packed to adhere to these 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.

The Austin Air Allergy Machine Series comprise HEGA filtration. Austin Air found and developed the new HEGA technology, which entails weaving carbon into a lightweight cloth. The Austin Air Allergy Machine is the perfect 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 electrons.

The activated charcoal adsorbs odorous substances from gases or liquids. The expression "adsorbing" describes the way the pollutants connect to the charcoal by chemical appeal. The huge surface area of the activated charcoal provides it tens of thousands of pores for trapping pollutants. As chemicals and pollutants pass the carbon surface, they are immediately attracted and captured inside the filter.

Some carbon filters have been treated with added chemicals like potassium iodide or potassium permanganate which boost the carbon filter's ability to capture Volatile Organic Compounds (VOCs) and other chemically reactive gases. Activated carbon filters adsorb a larger 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, plus a silent fan.

Electrostatic Filters

Like Activated Carbon filters, Electrostatic filters attract pollutants. Rather than carbon, Electrostatic filters use electrostatic charges to clean the air. Electrostatic charges are made by pushing air through a listing of static vulnerable fibers. As airborne particles proceed past the static vulnerable fibers, they become attracted to the static charge and are captured within the filter. The particles remain 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 worry about replacing the filters, because most electrostatic air cleaners utilize set plates to capture 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, a few electrostatic filters emit ozone, a dangerous lung irritant that can trigger asthma and asthma symptoms, in addition to other respiratory troubles.

Procuring an air cleaner that doesn't emit any ozone increases the amount of truly clean air in your property. Friedrich air purifiers have the very best electrostatic filter in the marketplace and emit minimal amounts of ozone.

Charged Media Filters

Charged media filters also utilize electrostatic energy. Made from synthetic fibers, the press filter is charged via the manufacturing process and keeps the fee during its usage. This cost 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 extremely efficient. However, as the filter becomes bloated, it will become resistant to the airflow, making it less efficient the more 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, some of them might emit ozone. Blueair air purifiers utilize the best charged press filtration, don't emit ozone, and are very quiet and efficient.

Hybrid Air Filtration Systems

The Hybrid air filtration system optimizes its effectiveness through the use of numerous technologies. Hybrid air purifiers use a combination of filtration procedures, each filter adding to the general effective quality of the air conditioner. Most effective air purifiers a use mixtures of the filters listed above.

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