mjncad
Super Member
Insulation and sealing the home will be the best passive energy saving investment you can make.
You need to contact a heating engineer called Doug Rye he is out of Arkansaw he has a web site and is an advocate of geo-thermal. I have had mine since 1990. It is the cheapest way I have to heat my house. I have hot water boiler and a wood stove but the geo is the most econimical there are more geo systems in Canada than the US and it has been around since the early 1900. Doug lists his phone # and will talk you thru what you need he will calclulate you furnace and a/c size if you send him your plans,