The Velocity 3 Whole Room Heater is a great little heater that puts out a lot of heat. We have one room in our house that the heat doesn't seem to reach and was always chilly. This heater has been just the thing to knock the chill. It has 3 settings; high 1500 watts, medium 1125 watts, and low 750 watts. The medium works great to heat the 15x20 room. It has an integrated thermostat that works great. It also has a knock over safety switch on the bottom which shuts the heater off in case of an accident. Big enough to heat a room, yet small enough to sit on any end table or counter. Sounds like a small fan running.