We purchased this based on the other reviews and the technology of this unit. 
We wanted to use the unit before reviewing it. It does work however it’s not quiet especially in the lower setting. When the unit arrived the metal was bent in two spots - the  grate surrounding the compressor- which could explain the loudness of the mechanics when the unit is running And the metal frame that holds the unit in the window was so bent we had to use pliers to bend the frame to install the unit in the window. This is the first time that we’ve purchased an AC window unit through onlinemail. We now question that decision.