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What are HEPA Air Filters?
By Marcus Peterson
The Environmental Protection Agency has determined that almost 90% of the people spend their time indoors. This means that indoor air quality is much more important than outdoor air quality for most people.
HEPA (High Efficiency Particulate Air) filters are recommended by allergists and medical professionals for the removal of all dust particles in the size range of droplet nuclei from the air. The HEPA filter, a mechanical filter, was developed by the Atomic Energy Commission of U.S.A. during World War II to prevent radioactive particles from escaping from plants and laboratories. Those initial HEPA air filters were very bulky compared to those that are produced today.
HEPA filters are able to trap 99.97% of particles having the size of 0.3 micron, including harmful fibers, dust, smoke, pet dander, and more. With the capacity to collect dirt particles, which are 1/300th the width of the human air, these filters have high resistance power and cannot be placed directly in heating or cooling systems.
These filters are used as the primary filtration systems for electronic clean room assembly, isolation wards, surgical theaters, bioengineering units, pharmaceutical processing units, and other places where the maximum removal of sub-micron particulate is required. They are also used in portable units to supplement a building's ventilation system by providing disinfected air.
Doctors are advising the usage of HEPA filters in heating/cooling systems for the prevention and treatment of Tuberculosis. HEPA air cleaners, vacuum cleaners and air filters are essential by law to be used in all equipment for asbestos, lead, toxic chemicals, and mold abatement.
The major benefit of HEPA filters is that they can remove Volatile Organic Compounds (VOCs) which are the gases that are released from household chemicals and synthetic materials. If filtration systems do not contain HEPA filters, all the toxic particles trapped in the room are left unfiltered. The price of portable HEPA filter unit ranges from approximately $100 to $3500, depending on the size of the unit. About the Author Air Filters Info provides detailed information on home, car, electronic, and HEPA air filters, as well as air conditioner filters and air filter manufacturers. Air Filters Info is the sister site of Air Purifiers Web.
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Some other articles by Marcus Peterson | How to Choose the Right Air Conditioner Filter The air filter in an air conditioning system keeps the cooling coils and air inside the room clean and free from all pollutants, ...
A Look at Electronic Air Filters Many people mistakenly assume that an air conditioning only controls the temperature of a living space. Air conditioning also involves the cleanliness of ...
The Important Function of Car Air Filters Studies conducted over the past two decades demonstrate that the exposure of the passengers inside a car to the dangerous air pollutants including respiratory irritants, neurological agents, volatile organic compounds (VOCs), carbon monoxide and carcinogens is significantly ...
The Importance of Home Air Filters Many people are not aware that the air inside our homes is five times harmful than the air outside. Because of airtight home and office building constructions, the airborne pollutants are ...
The Four Major Types of Air Filters Hygienic air is essential to human life, and in this modern age, that requires air cleaners. There are a few ...
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