Nice unit.  We purchased the 8000 but for a 240 square foot room and its great.  It was a bit more difficult for us to install as we have aluminum windows, but we rigged up a solution.  For regular windows, this thing is a breeze to install.  3 fan speeds, no rattling, WiFi connect so that I can turn it on when I leave work, and the bedroom. Is cool when I get home.  Nice product.  Good job GE.