Are air conditioners safe for COVID?
Check your AC manual for more information on filters for your specific unit. However, by itself, a window air conditioner with an outdoor air intake and/or a MERV-13 or better filter is not enough to protect people from COVID-19. Can COVID-19 spread through HVAC systems? While airflows within a particular space may help spread disease among people in that space, there is no definitive evidence to date that viable virus has been transmitted through an HVAC system to result in disease transmission to people in other spaces served by the same system.