This air conditioner is very quiet as advertised and cools well. The installation was easy in the window I have although trying to make out the directions was the hardest part. They were much more confusing than the actual installation. The only real issue I have is there's no 'energy saver' mode. I should have researched a little more carefully as that is a big plus when you're going to be gone all day. I just assumed a unit of this price and BTU's would have that feature. I have animals so need to keep iy cool for them but would be 5 stars if the unit could pause itself when it reaches the desired temperature.