Humidity in the South hits 100% way too often, unfortunately. I’d imagine that would not be great for them.

My equipment lives in my family room. I’m in SC and run three fully populated Dell r720XD’s 24/7. It keeps the house warm in winter, but heats it up more during the summer (it sucks!). I haven’t found a solution to exhausting the heat without creating a negative pressure in the house causing outside heat to be pulled in, unfortunately.