It does exactly what I need it to do! Although, admittedly, I don't have it set very low, as I get cold easily. It's not terribly loud, I think running all of my fans was louder (it can be loud when it first kicks in though), and it cools/shuts off efficiently. I will say, it took longer than I'd anticipated to put together (mainly adjusting/cutting the plastic for the window), and it is quite heavy -- so if your floors have a dip like mine, it may roll! I'm pretty satisfied with it, though!