Wanted this unit for my basement as I have equipment that gives off a lot of heat . Installation was a little tasking meaning I had to measure and cut the outlet to fit the window . Exhaust hose was a bit short had to raise the unit. Operating was similar to a window unit extremely loud though but runs cool. It does not automatically go into energy saving mode at no time at all you will have to turn it off as the timer makes no sense. I tried setting the timer default is 1 hour tried to lower the set time but it would not say minutes, the indicator still displayed hour.  My suggestion if this unit is needed for a bedroom too loud unless you dont mind the noise. Not great for a home theater or any audio listening room but it cools.