Bests & Worsts Reviews from Amazon

Got mine yesterday. Installed like any other window unit. Turned it on and heard the dreaded machine gun sound that others have been discussing. This was in my master bedroom so my wife and I couldn't sleep with it and ended up turning it off. Today, I took it apart to see if something was loose. Everything looked fine and the fan blades appeared to clear their surroundings. With the unit out of the window, it sounded great! No rattle! I thought that simply taking the cover off and putting it back on might have fixed the issue, but I was wrong. I put it back in the window sill and it starting making that sound again! Arrrgh! So why did the sound go away when I had it out and sitting on an ottoman? Hmmm... I went outside with my wife inside and starting pushing on the underside to see if the noise went away. Keep in mind that you can't hear the noise, at least on mine, from the outside. When I applied a little pressure directly underneath, the sound stopped completely. Removing the pressure and it came back. So I cut a piece of pressure-treated 2x4 and propped it up underneath. There's even a little groove for it like it was meant to be propped up. Performance-wise, this baby is awesome! It's also nice and quiet now that I fixed the noise. I can't give it 5 stars because it didn't work well out of the box and, judging by other comments, you may find the same thing. If you bought it and have the same issue, try the board. It might work perfectly!