They travel throughout the entire room and purge all the air of particulate, not just the air that passes through a filter. They drop the particulates to the ground. They must be in each room as the ions cannot effectively travel through HVAC ducts. The extra atom of ozone is known as a loose radical that looks for organics to attach to and thereby oxidize. Ozone is known as a friendly oxidizer due to the fact that it reverts back to oxygen after oxidation occurs.
Ozone can neutralize odors and gases.
Ozone destroys microorganisms and does not reduce airflow. Ozone units can be installed in central units or in each room. Ozone has no effect on particulate solid particles. Ozone exposure levels must be controlled. Ultraviolet light can also sanitize air that is passed directly in its path.