We do have a window unit air conditioner in our bedroom. Cliff and I just put it in the window this morning. And we're looking at a larger one for the kitchen-living room.
However, keep in mind that Cliff's hottest hours are from 3:30 to midnight, at work. In summer, temperatures are in the 90's inside that building. So home is the least of his worries. In fact, AC at home could perhaps make him even more vulnerable to the heat at work, because he wouldn't be used to it.