I've read other reviews about this unit being cold. All I can say was that I stayed in the unit during a recent storm with temperatures around 0. The systems heat kicked on and the unit was in the 70's! Scott was great at a quick response and there are space heaters at the unit if needed. It could be that the buildings heat system (old fashioned boiler heat) doesn't come on enough during the cooler days. I highly recommend this unit and Scott!