On a side note, for a time, we had what was known in the South as a Swamp Cooler .. essentially, a window mounted large contraption that would inject hyper humid, yet somehow, cooler air into the room .. I guess it was better than nothing .. especially if you stood in front of it ..
A friend of mine moved to AZ and that was the first time I ever heard of a swamp cooler. She said everyone there had them. Didn't sound as good to me as a good old AC unit though.
When I was growing up having AC was unheard of. What we had was a big old window fan that Dad insisted had to be set on exhaust to blow the hot air out of the house. Why not pull the cool night air INTO the house??? I hate, hate, hated the summertime heat. Couldn't get comfortable, couldn't sleep and it made me cranky. When we got married our first apartment had AC and I swore I'd never live anyplace that didn't have it. So far, so good. Next to the wheel and beer, AC is man's greatest invention.