Quote:
Originally posted by choskins
It does. I clean the ionizing plate about once a quarter, blow out the unit with my air hose and replace the HEPA filter (optional) about every 6 months. Very cheap and low maintenance.
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The classic unit I'm familiar with doesn't have a HEPA filter, just metal screens front and back. A salesman suggested that it somehow used radio waves to attract charged pollutant particles to the unit, but I don't see how that theory would work.