We are building a new house in southern Indiana. We are currently using a Large Heat pump to heat 2300 Sq. Ft. Tri-level. It is not efficient enough for this far north. Our new house will be 1700 - 1800 Sq. Ft. I can not get any good comparisons between LP and Electric furnaces. We will be installing central air with the furnace. Can yougive me any information or direct me to a website that can.