This smart thermostat, from a company founded by former lead developers of the iPhone, programs itself by noting what temperatures a homeowner sets it to over the course of a week. Temperatures are then maintained as efficiently as possible, in part by keeping tabs on the weather forecast via Wi-Fi and by using motion sensors to detect when the home is unoccupied, so it can be allowed to become colder or warmer than usual. Energy usage can be monitored online or with a smart phone.
Product: Nest Learning Thermostat
Companies: Nest Labs