Heating system

Geothermal pipes (black on the right) circulate ethanol out into the field, drawing ground heat from the earth, bringing it back to the house, where it goes thru the heat pump (box on the floor), which in turn heats the hot water tank (white tank to left of heat pump) which then heats the water for the radiant floor heating (pipes t0 the left of the hot water tank).
House is heated from the floor up. Also, passive solar gain will be received due to the orientation of the house, (due south) for maximum utilization of the natural heat from the sun in the winter.
Roof pitch is designed to let in the sun's rays in, in the winter (sun sits lower in the sky in the winter) and to keep them out in the summer (sun sits higher in the sky in the summer).