Cobb Hill Co-Housing Project At the Cobb Hill Co-Housing Project in Hartland, Vermont Bob meets up with Susie Sweitzer and general contractor, Mark Albee an experienced "green builder". Mark notes that except for the LVLs, all the lumber used in the home is from sustainable foresting operations grown locally in New England following selective harvesting practices. The heat source for the entire 14 building complex is a large gasifying wood boiler in a remote building which sends forced hot water to all the units. Each home also has a propane fired backup unit for winter heating and domestic hot water. Homes also save energy with a GFX drainwater heat recovery system.
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