Despite the claims, 16 mg per hour ozone is bubkus. It may be a little more that should be present if humans are in the area. But for truly treating mold, smoke odor, etc. you need something in the neighbor hood of 3 to 6 mg per hour PER SQUARE FOOT of area, and at that level, humans must NOT be in the area until after treating for a few hours, then opening to ventilation. Check this website: www.queenaire.com for a lot of good info on ozone odor control. Their machines output in the range of 300 to 1800 mg per hour.