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Air Cleaners: Clearing the Air

Reviewed by:
Rosemary Thornton
Using negative ionization and natural air circulation, this air cleaner captures tiny particulate matter silenty and effectively.

Airborne contaminants down to .002 microns are trapped on replaceable filters (called Dieletric Collection Sheets). According to the manufacturer, the air cleaner captures viruses, bacteria, mold spores, pollen, cigarette smoke and pet dander and will cleanse a room up to 500 square feet.

Position it vertically or horizontally, turn it on and don't sweat the utility expense. It costs about 35 cents per month to operate.

Collection sheets last about one month and cost $30 (for a package of six).

  • SilentAir Air Purifier 4000 is about $200 (April 2006).
  • Dimensions: 20" wide x 14" high x 2" deep
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