This is, without a doubt, the best window AC I have ever owned and I have owned quite a few. It is not only cooling at least 850 sq. ft., but it is doing it quietly.
Installation is definitely a two person job because of its bulk and weight. The process is somewhat involved so pre-reading the instructions and then following them meticulously is required. That being said, the installation was pretty straightforward with only a couple of minor hiccups due mostly to getting ahead of ourselves in following the instructions. In the end, though, it was well worth the effort. This AC is doing the job better than I could hope for.