This is a good unit, been very reliable for the past month and pumps out a lot of cold air. Quieter than others I tried, but still somewhat noisy since it is a portable A/C. I have two complaints: 1) The fan speed changes when the compressor turns on/off, which is noticeable when sleeping. It's still a quieter transition than the other portable units I've used, but it could be better. 2) The window mounting unit is very odd and needed to be cut down to size and comes with no weather stripping.