Ozone is a powerful oxidizing gas that destroys microorganisms. Here is how the science works. Ozone consists of oxygen (O2) with a loosely bonded third oxygen atom that is readily available to break free, attach to anything around it, and oxidize it, thus destroying the contagions. PureAC generates ozone gas which is then safely circulated throughout the air conditioner and mini-split. Every surface internally, even throughout the blower wheel is touched by this natural and powerful disinfecting gas.