Chalk Hill Off-Grid Cabin
Rustic Exterior, Sacramento
The house features energy independence by necessity. Solar hot water collectors provide domestic hot water as well as space heating by flowing the heated fluid first through a heat exchanger and then into tubing buried in a 2 ft. bed of sand beneath the floor slabs.
© Eric Millette Photography
Glycol solution, which prevents freezing, is pumped through solar hot water panels and into a heat exchanger in a...