I have read many of the threads here about the pros/cons of using geomthermal. I am seriously considering going with geomthermal/radiant to heat and cool my house. The one thing that I didn't see in any of the threads was any idea on cost of such systems. Can anyone give me a ballpark in what this type of unit will cost per sqft to install? I live in the Northeast and the cost of oil/gas has skyrocketed over the past year+ and we are looking for alternative means of heating/cooling our new home.