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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The above-ground portions of the upper level are insulated with 1/2-inch polystyrene and 3-1/2-inch fiberglass for a combined R-value of over 20.
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