Air Purifiers

Who thought air could be so complicated? Anyone who’s shopped for an air purifier has had to come to terms with the various technologies used to scrub dangerous particles, microbes and chemicals out of our air. Each technology has its benefits and drawbacks. Here is a brief overview so you can decide which best suits your needs.

The simplest air filter purifier uses a fan to draw air through a filter. We’ve all heard the term HEPA filter used enthusiastically by advertisers. HEPA, which stands for high efficiency particulate air, is a government regulated standard for air filters that remove virtually all of the very small particles that contribute to allergy symptoms. HEPA-like means a filter that is very efficient, but not as effective as the real thing. This may or may not be important depending on your sensitivity to air pollution and allergens.

Some air purifiers also use a charcoal or carbon filter, also called a prefilter. These attract and neutralize volatile chemicals, thus reducing odors in the home. They work at the molecular level, and so are not effective for larger particles.Some air purifiers also use ultraviolet or UV lights to kill bacteria and viruses. This is particularly useful for the elderly, families with small children and those who suffer from frequent colds and other illnesses.

Technology Purpose HEPA Filter Dust and dust mites, mold spores, pet dander, pollen and other allergens Prefilter Hair, lint Carbon filter Odors, volatile chemicals Electrostatic precipitator Dust and dust mites, mold spores, pet dander, pollen and other allergens, odors UV Light Micro-organisms

An ionizer contains metal elements that electrically charge the air, attracting particles to a metal collection surface. These air purifiers come in fan and fanless models. Some of these devices produce significant amounts of ozone, a chemical component of smog. This is something to be aware of when shopping for an ionizing air purifier.

Featured Products
Hunter HEPAtech 30378	Oreck Air Purifier	Ionic Pro Turbo	Air Healthmate	Honeywell Compact HHT

This entry was posted on Tuesday, August 4th, 2009 at 10:52 pm and is filed under Air Purifiers. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.