've had this unit around a month now and we've had triple digit heat. My a/c has kept the shop nice and cool. I've learned to keep an eye on the humidity, as this affects how often I need to drain it. It does run a little loud, but not extremely. It needs to be turned on before the shop heats up, or it can't catch up. This is due to the shop is not connected to the central unit of our house and is a stand alone building. If I turn it on when it's still cool, it works great, keeping it at whatever temperature it's set at, regardless of how hot it is outside. The most negative thing, and it's small, is the bottom drain. The location makes it difficult to get a pan under, and I didn't want to run a hose, but that would be the best setup.