I bought this unit from my local retailer, two months ago. It’s relatively quiet inside, but outside it sounds VERY loud, almost like the fan is loose. 

Cooler works fine otherwise. The temp down button needs to be pressed on fairly hard to work, requires a much harder push than all the other buttons. The tilt is also very shallow, maybe a bit more than an inch. Goofy window, I guess. It’s a standard cheap vinyl type. I need some help getting it to tilt to specs.