Radon and its decay products may be reduced by the Air Purification System, although it has not been tested for radon reduction. Scientific literature exists showing that radon adsorbs (fancy word meaning 'attaches to the surface of', not to be confused with absorption with a 'b') to activated carbon, which is one of the components of the VOC stage of the Air Purification System. Additionally, some of the decay products may attach to other particulates (dust, pollen, etc.) which will be filtered based on their size. However, we do not publish any claims of radon reduction and cannot recommend the Air Purification System as an appropriate radon mitigation technique.