The Honeywell hepa air cleaner model number 50300 really does what it says. It cleans the air. Most air purifiers, like ion producing air purifiers, actually make the air more polluted. Ionizers, according to Consumer reports, make more pollution in the air and can contribute to lung problems. They make dust heavier, and it falls down all over your furniture. This air cleaner, truely CLEANS the surrounding air. It is equipped with a charcoal filter that initially filters the air. The air then goes into a hepa filter where it is purified and cleaned even more. Then it is redistributed...