No furnace? No problem. This house resides in one of the coldest states in the US, but it doesn’t have a furnace. That doesn’t mean its occupants simply freeze to death, though. The home was intelligently designed to stay warm inside no matter how cold it gets outside. Ultra-thick, double-studded, 12 inch walls are just one of the many ways the house maintains warmth. It also features an air-tight exterior shell, high-tech insulation, and an energy recovery ventilator.
