I leave mine on year round because we have the a/c. I store the down comforter though. I think sweating and not sleeping has a lot to do with how tired you are and what you have for supper - I know I'll sweat to death even with the a/c if I have a heavy supper so I try to watch what I eat...key word "try". As for pillows I need the down pillows , anything else is just not comfy.