I have an autistic son who is very sensitive to sound. When we go out to wait for the bus in the morning it has been like 10 deg. I needed something to keep him warm but other heaters were so loud. When this came i plugged it in and there was no sound at all. The heat coming off it was great. I am so excited we now have this. I could not believe the heat that was coming out of it with no sound. This is a must for any house. Ease to use, easy to move, and silent.