I bought this air conditioner today for my (very) old apartment. The install was pretty easy but due to its' weight (80 lbs.) a helper would have been ideal. There is a lot of included insulation material as well which I was very happy about because that will make this a more efficient unit!
As for its' operation it is a window air conditioner so it's obviously not silent but it is quieter than all the units i've used in the past. The temperature sensing remote was a nice touch too because you don't have to fiddle with the set point on the unit itself. Just tell the remote what temp you want it and have it nearby. Perfect for lazy people like me!
I got this AC a few weeks ago. We are very pleased with it, is quiet, works great and it was very easy to install. I love the new flexible panels to adjust to the window, now is much easier to seal the sides.
Does a good job cooling getting my 600 sq. ft. apartment to 75º in 90º weather. Noisier than expected, but just the rush of air from the fan; no "mechanical" or "electric" sounds when compressor kicks in. Probably no unit of this size is very quiet. Easy to install, but at 70 lbs, could use a helper.