My current heating and cooling systems is the original 25 year old system. It consists of a Rheem heatpump and Rheem Air Handler unit with electric resistance heating coils for backup. My average monthly energy bill is $275 and my home is completely electric. The home is two levels at about 1825 square feet. I live in the Baltimore, Md area and the utility rates are about
$.147 per kWh and $1.30 per therm.
I am considering upgrading to a energy effecient system. The heating and cooling salesman suggested going with a duel fuel heatpump system. That is a heatpump and gas furnace system. I am leaning towards a 16 SEER, 9 HSPF Heatpump and 93.7 AFUE gas furnace (or even higher at 96.7 AFUE).
I have a few questions.
1.Based on the rough numbers I've presented is this a wise choice or should I go with a total electic efficient heatpump and new airhandler with electric backup. If I go with gas I'll have to have the gas line run and plumbing installed and I've factored that in.
2. Does anyone have any figures or know where I can calculate what kind of savings I can expect?
The energystar website for the government allows you to calculate some rough numbers if you go with a straight airconditioner and gas furnace setup. They also have a calculator for a straight electric heatpump. I don't see anything that allows you to calculate a combination electric heatpump with gas furnace.
I've used a rough number with just the straight airconditioning and gas furnace, but I suspect this is not correct. I'm guessing that the combination heatpump and gas furnace should be less expensive. Any ideas or sites with calculators that would allow me to plug in some numbers and figures.