A smart thermostatlets you control your home's heating and cooling temperature settings from your "smart" device - phone, tablet or computer. Smart thermostats are Wi-Fi enabled, allowing access to its temperature and other features through an app downloaded on your smart device. An ENERGY STAR certified smart thermostat offers more convenience, energy savings, insight, and control than manual or programmable thermostats. Homes with high heating and cooling bills, as well as homes that are unoccupied for much of the day, can save approximately $100 a year with an ENERGY STAR certified smart thermostat. They routinely service our boilers at work and I’d heard nothing but great things.