David W. Allan’s Solar Home

David Allan's solar home in Utah, which has no furnace, has stayed adequately warm all winter for two decades.
David Allan’s solar home in Utah, which has no furnace, has stayed adequately warm all winter for two decades.

‚ÄúLocated in the cooler central Utah climate at 6,000 foot elevation, the Allan’s solar home integrates at least ten different forms of solar, including: trombe wall, solarium convection, photovoltaic cells, propylene-glycol heat exchange, eutectic salt chamber, berm insulation, black chimneys and under-ground intake for passive solar air conditioning, and dehydration of food.”

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