 The whole approach is about reducing emissions from the built environment. Greg Hale is one of the founders of the development, called the Catskill Project. He says the homes are designed to maximize efficiency. They're tightly insulated with triple glazed windows to prevent heat loss. And each comes with a ventilation system that brings in fresh air and pushes stale air out. In winter, it captures heat from the exhaust and uses it to help warm the incoming air.