The best ionic air purifiers are effective, user-friendly, and safe, creating cleaner indoor air at the touch of a button. We may earn revenue from the products available on this page and participate in affiliate programs. Photo: amazon.com Ionic air purifiers use ionizers to clean the air. These ionizers charge airborne particles, which causes them to be attracted to surfaces (like walls, floors, furniture, or a collection plate in the purifier). This process removes the particles from the air, improving air quality. According to the Environmental Protection Agency (EPA), ionizers remove small particles (like those in cigarette smoke) but are less effective on large particles like pollen and dust. They also have no effect on gases or odors. For this reason, many ionic air purifiers also have air filters, like activated carbon or high-efficiency particulate air (HEPA) filters, to enhance particle removal. Overall, the best ionic air purifiers share the same characteristics as all goo...