How do you install earth tubes for passive heating and cooling?
...earth tubes’, I would not be adding that to the design. So we are on the same page – ‘Earth tubes’ often refers to the *ventilation* system of an Earthship. Is that what you are referring to? If so, all we would say to that is, just don’t. See this page on why Earthships don’t work in cold climates and scroll down to t...