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 different methods of air cleaning, like Filtration, Electro-static Precipitation and Ion Generation. Air Filtration cleans air through the removal of sub-micron particulate, gases and odors. If you are plagued by allergies or asthma, an air filter might help you. Air filters are the best tools for eradicating allergens from the house. Particularly for those people who are suffering from asthma and allergies, both the U.S. Environmental Protection Agency (EPA) and the American Lung Association recommend air filtration.

The ability to remove allergens and contaminants depends on the amount of air drawn through the filter. Factors that affect filter efficiency include fiber size, fiber density, airflow rate, and particle diameter. Air filters may be centralized, in-home filtration systems or portable devices. When the air quality problems exist throughout the house, then a centralized filtration system is needed. Otherwise, portable cleaner may serve the purpose of air filtration.

There are four major types of air filters, depending on specific needs. They are:

Mechanical Filters

These filters force air through a special screen that traps pollen, dust particulate, smoke and air-borne irritants and pet dander. The best example of this type of filters is HEPA (High Efficiency Particulate Air) filter.

Gas Phase Filters

These air filters are used for removing odors and other types of pollutants such as gases from cooking, paints, perfume etc. These filters are not meant for the removal of allergens in the home.

Electronic Filters

In these types of filters, allergens are trapped through electrostatic precipitators with a fan. Electronic filters use electric charges to attract contaminants.

Hybrid Filters

These air filters combine electrostatic and mechanical filters. These are used to trap allergens rather than gas based contaminants.

Another type of air filters is the Ozone air filter, but it is not environment-friendly.

When purchasing an air filter, one has to consider things like which type of allergens will be removed, the filter's efficiency with respect to HEPA standards, the clean air delivery rate (CADR) of the filter, the ease of changing the filter, and the noise that it will make. Changing air filters regularly facilitates is ability to improve the quality of air.

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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Jakarta Post

Space Shuttle Crew Home Improvement Project
KTNV Las Vegas, NV - Nov 30, 2008
The space shuttle endeavour and its seven astronauts are making their way back to earth. The shuttle undocked from the international space station Friday ...
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Despite drop in oil, Americans seal up for winter
Reuters - Nov 30, 2008
Across the northern United States, contractors, home improvement retailers and nonprofit groups report that such weatherization efforts continue apace, ...

Home improvement contracts regulated
Daily American Online, PA - Nov 29, 2008
The bill will regulate written home improvement contracts and require contractors doing more than $5000 of work annually to be registered in the state. ...

Secondhand home improvement stores stock big savings
Trading Markets (press release), CA - Nov 30, 2008
The store is Stardust Building Supplies, a nonprofit organization that sells donated home improvement items at up to 80 percent off retail prices. ...

CNET News

The iPhone 2.2 software update, a hands-on report
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... from last to first in a circular fashion), and a bigger improvement, I think. It makes the first Home screen distinctly more convenient than the others, ...

Senior Citizens Beware of Lame Home Improvement Companies
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Over the past year, at least three local senior citizens have been taken advantage of by an out-of-town home improvement contractor for tens of thousands of ...

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Mt. Vernon Register-News, IL - 9 hours ago
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Home improvement sometimes best left to pros
Sun-Sentinel.com, FL - Nov 28, 2008
Their column has been in syndication for 20 years, and they have written 20 home improvement books. Each week the Hamiltons will compare the cost of a ...

Economic Downturn Sparks New Home Improvement Trend
MarketWatch - Nov 18, 2008
With the harsh reality of uncertain economic times, and the average consumer shouldering $10000 or more in credit card debt, a new trend in home improvement ...

December Is The Best Time For Home Improvements
WebWire (press release), GA - Nov 28, 2008
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