Do you think that they didn’t have the heat on in the nursing home in WA state in February? What about the cruise ships?
I think the virus loves a closed system of circulating air, whether heated or cooled.
That’s why I leave my HVAC off and open the windows as often as possible.
In China there is no heat in winter.
The virus is sensitive to heat.
“Forced hot air” systems put the virus under a lot of stress.
Fresh air is good.
But giving the evirus what it likes isn’t.
“I think the virus loves a closed system of circulating air, whether heated or cooled.”
I see your point, but the virus still has to get into those systems, and unlike Legionnaires Disease (which is a bacteria), this is a virus, and thus cannot reproduce (or replicate) without a host...whereas a bacteria can definitely reproduce without any outside help.
Windows are open here from dawn to twilight.