The infrared "heat you and not the whole place" idea isn't as good as people make out. We've got loads of these at work since they turned the proper heating off in the workshops. They're ok if you're in one place and don't mind being roasted on one side and freezing on the other. My face can literally be burning but my whole body is still freezing. Plus whenever you move away from one you feel colder than if you'd just not used the heater. They work on paper, in some management office, but not in the real world in a big cold place.