EXCELLENT
I have 2 of these tower heaters. One in a 18' x 15' living room, with an open door going into a mid-size kitchen. The second in a bedroom 12' x 14'. Today it is now 38 degrees outside. The heaters on low fan, setting on 76, and the inside temp is now 73.5. The heaters run about 10 minutes and cut off for about 1 hour. Very quiet and you can feel the warm air circulating throughout the room. FANTASTIC!