but I wonder whether some form of dehumidification specifically, rather than just cooling, could also aid survival?

It's a lot cheaper to just become morlocks and sleep underground during the day and emerge on the surface at night.

Solar/wind power and heat pumps and personal air conditioners are a lot more costly than LED lights to work at night.

Or worse, mass migration north/south out of the hot and humid equatorial regions.

Pretty good for AI. Books aren't square enough, windows aren't equal size, plants growing into the house through the windows, top of ladder is very wonky. But honestly if I didn't work with AI content regularly, I'd never notice that kind of stuff.