Nest Learning Thermostat - 3rd Generation Built In WiFi Heating and CoolingIt learns what temperatures you like, turns itself down when youre away and connects to your phone. It has a big, sharp display. And its proven to help save energy. In independent studies, the Nest Thermostat saved an average of 10% to 12% on heating bills and 15% on cooling bills. Weve estimated average savings of $131 to $145 a year. Unit: EA UPC: 854448003877 Model Number: T3007ES