I suppose one could normal or long-press HV to allow or force the ICE to start and then use heat if one wanted to totally avoid EV range hit by using the heater. I realize this isn't best for mileage, but many of us were burning gas routinely before buying this car. I think it's funny I've become so paranoid about burning gas at all. Even with some 'hit' in the winter to efficiency, I still love the car. Although I'd add my weekday commute is short enough that even in winter time I can often do all-electric. If that were not the case, I might be a little less enamored with the car.