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Passive designs that really work. We modify each design to match your building and climate.

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Comment by David Williams on April 19, 2012 at 7:23am

I wanted to share some of the designs that work for our Montana climate.  With modifications they can work in most climates.  We have completed extensive hourly energy and environmental monitoring, on several of these buildings, and look forward to sharing our results with other energy conscience builders and designers.  Passive solar can truly compliment an energy efficient building.  We have dedicated the last thirty years to promoting these types of designs and look forward to sharing what we have learned.

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