It is great for warming a 13x15 bedroom. I enjoy the timer feature. It can be set for 1-3 hours. 1 hour is plenty, often less in a closed room. We have an open floor plan in the living area and you have to put it right at your feet to keep warm... our apartment is old and not well insulated. The heat goes right out the windows. The only drawback is that it sucks up the energy, and our bill goes way up if we use it too much, but who wants to be cold! :-)
I purchased this heater over a year ago. It is small and is easily moved from one place to another. I had another heater for many years that was taller, and truthfully, I liked that item better. However, for the price, quick delivery, ease of movement and heat output, I am a happy camper.