Negative Ions have also been proven to be Beneficial to indoor air.
Ozone is used for odor removal because of it's oxidizing capability.
NaturalAir utilizes needle tip negative ionization and user-optional ozone. The negative ions are dispersed throughout an area with a quiet, controllable fan. Promote a general feeling of well being. Scientists at Columbia University's Presbyterian Medical Center conducted a placebo-controlled study testing negative ions for the treatment of seasonal depression. The results were published in the prestigious Journal of Alternative and Complimentary Medicine in January, 1995.