I have one of the knock off's (Bob'o'pedic) and I was having the same issue with the heat. (Especially once I started with hot flashes.) I picked up a thick (About 1-2") cotton topper to put over it and that seemed to solve the heat problem. Other than that I like it and find it very comfortable. Of course our previous mattress was about 20 year old when we got rid of it so anything had to be better.