Steam is a time-tested and efficient method to clean and disinfect surfaces. Studies show that viruses such as COVID-19 can survive on hard surfaces for several days. Steam removes organisms from the surface, and the heat dissolves the protective fatty layer that surrounds the virus.
The US National Library of Medicine shows that temperatures above 65 degrees Celsius (or 149 degrees Fahrenheit) can inactivate coronaviruses such as SARS, MERS, and COVID-19. Studies from the National Center of Biotechnology Information show that increasing surface temperature to 65C had a strong negative effect on viral infectivity in just one minute. Steam from a steam disinfection machine such as an industrial steam cleaner exits the nozzle at 180 degrees