Concept and design
Do Earthships work in cold climates?
...Novoclimat and Passivhaus. They are also mandatory in some regional building codes, but they are not found in Earthships. Instead, an Earthship gets ventilation through what they call earthtubes, and ventilation openings in the roof.
In the Earthship Seminar 2009 video, Reynolds speaks of 'ventilation without heat lo...