My Mother's House Part IV: Installing a Passive Heating System

In this stage of building MOTHER's house, workers install a geothermal heating system. Read how it's done and what suggestions we have for a heat-exchanger system of your own.

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Fill dirt was added until we reached a level about 1-1/2 feet below the edge of the roof on the back of the building. We then laid a 6-foot-wide sheet of 4-mil polyethylene along the entire length of the building, to prevent water draining off the roof from running directly down along the wall.
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