DOE Tour of Zero: Shenandoah Circle by Mantell-Hecathorn Builders

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“The cost of propane to heat the house … has only been about $350 from July through May! Pretty remarkable for a 3,800-square-foot home in this climate!"

DOE Tour of Zero: Shenandoah Circle by Mantell-Hecathorn Builders: Durango, CO; m-hbuilders.com. 3,841 square feet, HERS score 21, $140 average monthly energy bill, $5,500 annual savings, $307,000 saved in the first 30 years.
Key features list: High-performance insulation system for enhanced quiet and comfort, comprehensive draft protection, fresh air system for cleaner indoor air, high-efficiency comfort system, energy-efficient appliances and advanced lighting technology for
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"We wanted to have a very well‐built, energy‐efficient home for our new residence in the mountains of Durango, Colorado. Our electric bills have been zero (we actually have a net credit due to our photovoltaic system). The cost of propane to heat the house … has only been about $350 from July through May! Pretty remarkable for a 3,800-square-foot home in this climate!"

– Homeowner

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DOE Tour of Zero: Shenandoah Circle by Mantell-Hecathorn Builders floorplans.