Ozone generators, "air cleaners," or "air purifying" devices that produce ozone should not be used in the home. Ozone is a gas that can cause health problems including irritation of the eyes, nose, and throat, asthma attacks, and breathing difficulty.
For more information about ozone generators please see
For general information about indoor air quality, please visit EPA's Indoor Air web site at http://www.epa.gov/iaq/
The California Air Resources Board also has helpful information about ozone generators and other air cleaners:
For more information about ozone, including health effects, see