I didn't have any of the problems with the instructions that other buyers are reporting. Lots of length options for the window adapter means it fits in my very narrow bedroom window, but also could be adapted to work with my sliding glass door. effectively cools my entire second floor, and barely raised my electricity bill, even when running the unit at 72 all day. The unit does not need to be drained or emptied (at least the 12K BTU model). There is a drain in the bottom with a rubber plug ( assume this is for making sure the unit is totally drained before storage). Some of the leaks reported might have something to do with that being left out or only plugged loosely, but there's no reason to drain the unit during normal operation, as it is a self-evaporating model. Complaints about the size and weight are a bit silly, as dimensions are given on the listing, and the weight is easily determined with a simple google search of the model number (it is very heavy! mine was somewhere around 70lbs). It's loud, but not disturbingly so, and i'd say comparable to slightly quieter than most window units i have encountered. Across the board, a great purchase!