We use this in our bedroom during the winter and I had purchased one a couple of years ago. Never had any problems with it. Then it stopped working an I noticed in the back it started to melt the back of the grill. So I had to get another one and it runs fine heats the room up great like the original one we had. Nothing has over heated in the back of the grill. Haven't neede to use the fan yet. But since may is around the corner we will be storing it back in the box for next winter. Let's hope I don't have another one like the first one.