Why Do Air Purifiers Produce Ozone?

Opposites attract, so the charged particles are attracted to the oppositely charged plate, removing the particles from the air. While these air purifiers are somewhat effective at this, the process of adding an electrical charge to the air causes some free oxygen molecules to become ozone.

Do all air purifiers emit ozone?

There's no ozone emission from air purifiers that use only high-efficiency particulate air filters (HEPA filters) to cleanse the air. Ionizing air purifiers, because of their electric charge, do create ozone. Consumer Reports has warned that they may give off potentially harmful ozone levels.

Is ozone from air purifier harmful?

Conclusions. Whether in its pure form or mixed with other chemicals, ozone can be harmful to health. When inhaled, ozone can damage the lungs. Relatively low amounts of ozone can cause chest pain, coughing, shortness of breath and, throat irritation.