I really like this device. I like that you can program the temp, how long it goes for at that temp and that you can set it to start. It really does work for a larger room, which I needed. This device was a replacement for another one I had ordered. The previous one made snapping noises while it is running, which is not supposed to be, so use your warrantee if you have this issue. My replacement is super quiet and only makes a noise when it starts on or off, so it is very quiet while running, and that is normal for this heater. Customer service was great in helping me get the replacement. Overall I am happy with my replacement and the company.