I'm in a apartment , I admit that we are on the 3rd floor, so a bit higher than a condo, but we have never had to use the A/C . We open the terrace french windows & doors the other end, and get a wonderful breeze blow through. We use a very good floor standing fan especially at night & it's brilliant. So if you're going to build a house maybe you should consider the layout to try and get air to blow through.