Air purification units; Water purification units; Water purification apparatus; Ozone generators that kill mold and mildew; Ozone generators for air purification; Ozone generators for sanitizing purposes; Ozone sanitizers for air and water; Water purifiers; Water purifying apparatus; Ozone generators that disinfect, deodorize, and destroy indoor biological contaminants including viruses, bacteria and allergens; Ozone generators that disinfect, deodorize, and destroy indoor chemical contaminants such as VOCs, benzene, and formaldehyde; Ozone generators that destroy odors such as pet odors, smoke odors, and cooking odors; Apparatus and installations for the purposes of sanitizing, namely, apparatus and installations that generate or use ozone to disinfect fluids, air, articles, foodstuffs and surfaces