Dwight:
I ran the calculator, and I may be reading the calculator incorrectly. Here's what it said:
System Comparisons:
1 Geothermal Heating and Cooling with Hot Water Generator
2 Natural Gas Furnace, 91% eff. / 10 SEER Air Conditioner / Natural Gas Water Heater
3 Natural Gas Furnace, 80% eff. / 10 SEER Air Conditioner / Natural Gas Water Heater
Annual heating, Cooling, and Hot Water Costs:
110 year old, 2300 sq. ft. home
South Bend, IN
System Heating Cooling Hot Water Totals Avg Monthly
1.......$1,606...$253.....$912....$2,771....$231
2.......$1,977...$643.....$607....$3,227....$269
3.......$2,213...$643.....$607....$3,463....$289
Electric rate: $0.143/kWh
Natural Gas Rate: $1.06/ccf
Does this mean that I'd only be saving an average of $38/month over the current system (system 2 in the data)?
