I live in Arizona, in an older mobile home. This is the best thing thats happened since I bought this 1000sqft home. Keeps my living room, dining room & kitchen cool. Set at just 78. It replaced a  through the wall unit, that was overworking set at 72 just to keep it a Little livable.  Couldn't be happier. Now I can actually sit in my living room & be very comfy, if not a bit chilly