STERI AIR is a portable indoor air sterilization device. The device works by irradiating the flowing air UV-C radiation on nucleic acids and proteins of microorganisms, which damages the structure of genetic material of microorganisms (including proteins and nucleic acids) preventing their reproduction. With this method pathogens from the air such as fungi, bacteria and viruses including CoV-2 are neutralized and afterwards filtered, clean air flows back into the room.