 Now that, in my opinion, is just spending too much money because you're going to run the damn thing all the time. So I recommend these steps first. First, attic insulation and ventilation first. If that solves your problem, fine. But if you go a step further and you want to save some money on AC, then you put in a whole house fan. And if you want to go beyond that because nothing's working, that's when you consider a mini split. And that's how you take care of a hot upper story.