Different Types of Air Filters Explained




If you want better indoor air quality, then you need an excellent air purifier. Air purifiers reduce the airborne pollutants that aggravate allergies and asthma. As dirty, polluted air flows through the air conditioner, fresh, clean air flows into your home. The sort of air filter in an air purifier decides how the air purifier works - and how well it works.


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 catch no less than 99.97% of pollutants in 0.3 microns.


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


HEGA Filters

You might also have heard of HEGA or High Efficiency Gas Adsorber filters. Specific to Austin Air, HEGA filters must exhibit a minimum efficacy of 99.9 percent, 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/zeolite pellets into a carbon cloth filter to trap gaseous particles. Specific to the HEGA filter, the adsorber filtration method has to be designed, assembled, filled and packaged to adhere to those specific standards. The HEGA air filter should 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 discovered and developed the brand new HEGA technology, which involves weaving carbon to a lightweight cloth. The Austin Air Allergy Machine is the ideal air purifier for someone who wants to remove gases, vapors, and odors in addition to 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 substances from gases or liquids. The expression "adsorbing" describes the way 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 compounds and pollutants pass the carbon surface, they are instantly attracted and captured inside the filter.


Some carbon filters have been treated with additional chemicals like potassium iodide or potassium permanganate which improve 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 feature a cylindrical shape for optimum air flow, an effective four-stage filtration system, and a silent fan.


Electrostatic Filters

Like Activated Carbon filters, Electrostatic filters attract pollutants. Rather than carbon, Electrostatic filters use electrostatic charges to wash the air. Electrostatic charges are made by pushing air through a listing of static vulnerable fibers. As airborne particles move past the static prone fibers, they become attracted to the static charge and are recorded inside the filter. The particles remain on table plates until they are hand washed or removed by means of a HEPA vacuum cleaner.


By utilizing static electricity, you can't need to worry about replacing the filters, because most electrostatic air cleaners use set plates to catch pollutants and can be washed easily. However, the collection plates must be cleaned regularly to ensure effective air cleaning. Also, unlike HEPA filters, some electrostatic filters emit ozone, a dangerous lung disease that may trigger asthma and allergy symptoms, as well as other respiratory issues.


Procuring an air cleaner which does not 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 additionally utilize electrostatic energy. Made from synthetic fibers, the media filter is charged via the production process and keeps the charge during its usage. This charge attracts airborne particles, giving them an electrostatic charge before trapping them within the fibers of a conventional filter.


Social media filters present comparatively low energy prices and are really efficient. However, as the filter becomes bloated, it becomes resistant to the airflow, which makes it less effective 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 quietnessnonetheless, a number of them might emit ozone. Blueair air purifiers utilize the best charged press filtration, don't emit ozone, and therefore are very quiet and efficient.


Hybrid Air Filtration Systems

The Hybrid air filtration system maximizes its effectiveness through the utilization of numerous technologies. Hybrid air purifiers use a mix of filtration procedures, each filter adding to the general effective quality of the air purifier. Most effective air purifiers that a use mixtures of the filters listed above.


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