Wouldn’t central air without HEPA filtration be an issue in a hotel setting? I don’t think it’s easy to retrofit (it can be done but not quick and cheap).
I can't find the clip right now but in one of NY Gov Cuomo's briefings they had an guy from (I think from the Engineers Corps) talk about this.
https://en.wikipedia.org/wiki/Packaged_terminal_air_conditio...