i'd like to see some support of this statement. we do these types of systems for schools all the time. i've done several life cycle cost analyses and usually see simple payback periods around the 6 year mark with an internal rate of return around 20%. serveral of these schools have been operating for a couple of years and their energy usage is right in line with the life cycle studies. pretty good investment if you ask me but these analyses are for schools ranging from 35,000 sf to 300,000 sf, in the residential world you might not see these returns.
Originally posted by berad
I swear, the 18 seer heatpump of anuy manufacturer is just slightly less efficient than a geothermal. But by the time you compare the installation costs, you'll never see the payback on the geothermal.