The Coway AP-1512HH Mighty Air Purifier does not emit ozone. It does not have an ionizer.
How effective is Coway Air Purifier?
Coway Airmega 400 Smart Air Purifier With a virtually silent fan when operating at low speeds, this unit can remove up to 99.99% of airborne particles down to 0.01 microns. It can also remove up to 99% of volatile organic compounds and fumes.Sep 30, 2021