This heater is great... Heats up a fairly large room fast... We are actually using 3 of these right now to heat our entire house (our gas furnace has a leak and is temporarily out of order pending repairs) along with one other small heater in the kitchen... They're doing a great job keeping our house sufficiently warm during some very cold nights we've had recently (between 20°-25°)... P.S. These heaters are surprisingly quiet... Love 'em...