Turn off your air conditioning, experts say after WHO shifts stance on airborne coronavirus

Air conditioning units that recirculate the same air in a room should be switched off or only used with open windows, experts have urged, amid mounting concern around the role of airborne transmission to spread Covid-19. Experts told the Telegraph that air conditioning units that only used recirculated air could exacerbate the spread of virus particles if someone was infected with Covid-19. Dr Shaun Fitzgerald, a fellow at the Royal Academy of Engineering, said there were two types of air condit