eider
Well-known member
I figured a lot of it out on my own. I spent 20 years as an HVAC tech so I understand air distribution systems. I've also read reports from the people who went into the cruise ships to decontaminate them after the passengers left and those people were scared stiff as the virus was everywhere and that made perfect sense to me. Air filters, unless a person buys the very expensive HEPA filters, have no chance of stopping something as small as a coronavirus so any room that is heated/cooled in a large building has air circulated through it that has been in every other room in the building served by that system of ductwork. And a lot of buildings have only one HVAC system. Really big buildings have multiple systems due to the logistics of moving that much air, but then you're talking 20 stories or so and taller.
I used to change air filters at a hospital, worked for an HVAC company who contracted the hospital's HVAC work, and those HEPA filters were a whole other world. Those filter changing days were back in the 80s and even then it was a scary proposition to change the filters because of all the bugs trapped in them. To be safe even then you had to basically dress for hazmat and the bugs now are far deadlier. Hospitals are breeding grounds for super bugs.
Very interesting points, all.
no doubt you have heard about the US carrier with coronavirus on board.....
I am surprised that we haven't heard more about air-con probs with this virus.