I need to replace my AC and am thinking about going with a heat pump system. How do I go about calculating the savings from a heat pump?
Currently, I use about 1500 therms per year to heat the house and about 6400 kwh for AC. I live near Washington DC. where we get about 4000+ Heating degree days and about 1500 cooling degree days. Average lows in January are in the 20 degree range. Average lows in April/October in the 40s.