We tried out this heater in our kitchen and then our living room. We have been holding out to turn on the furnace until it gets below 40 at night. The house stays pretty warm throughout the day but since the time change it cools down earlier, around 6, so we used this to warm up our living room instead of turning on the furnace. This heater warms the air enough for our family to play games, read books, do homework, or watch movies without having to wear an extra layer.