Buildings use a lot of energy for heating and cooling throughout the year, homes are no exception. Harvard decided to build a zero emission “home” to test solutions that can be used in new buildings or retrofitted into existing structures. The design is smart in the sense it uses passive heat exchange and lighting while also using high tech sensors to monitor the home and adjust internal systems.
Rather than existing as a “sealed box,” HouseZero is designed to interact with the seasons and environment, sometimes rapidly adjusting itself to achieve comfort for its occupants without using powered HVAC systems.
For example, the home uses a “window actuation system” that relies upon software and room sensors to automatically open and shut windows as the outside temperature changes, intelligently moving air around the home to make it cooler or warmer (through cross ventilation and convection). This process is also driven by a “solar vent” in the basement.