Proven to save energy, the Nest Learning Thermostat is more beautiful than ever, redesigned with a thinner, sleeker design and bigger, sharper display. It saves on average 10 to 12 percent on heating bills and 15 percent on cooling bills, which means it can pay for itself in less than two years. Built to last, enjoy it this ENERGY STAR certified thermostat's automatic programming and remote control by linking it to your smartphone or other devices. You can get alerts directly to your phone or tablet if the temperature in your home gets dangerously hot or cold.