We got this heater to keep a glassed in room usable in the cool winters we have in eastern Virginia. To our dismay it lasted 3 weeks of average use. This is use before it got cold. The temperatures out side were in the 40's and this little heater "gave up the ghost" while we had it on only to warm the room during the day to usable temperature. (my thermostat says 60 is usable but my husband likes it closer to 70). I do not think it is a heater that is designed to do more than add to an already heated small room indide the house. We now have a much more expensive heater that does the job perfectly....