I'm renting a place that has a heat pump. The heat pump is brand new and the house is about 1200 sq ft. It seems to blow out more cool air than warm air. One of my roommates has began flipping the switch over to "Emergency Heat" so it will blow out warm air. What are the results of using the emergency heat for extended periods? Will electric bills be higher? Will the outside unit freeze up? The heat seems to stay on for less time now, so it's definitely working, but I just don't think you're supposed to use it in this manner. FWIW, the weather has been pretty cold recently. The past week has been well below freezing with wind chills below 0 each night and some days.