My first room was not good. It was clean, but there was black stuff around the windows, and it could not be opened. Plus, the television did not work. And the room was very warm and stuffy. The second room was better. It was still stuffy and warm, but not as bad as the first one. I was able to open the window, and the television worked. A few hours later I figured out to work the air conditioner, and that made the room much better.