Until we learned they control about 50% of our home’s energy bill. That’s as much as the refrigerator, lighting, TVs, stereos and computers combined. Traditional thermostats tend to waste a lot of energy, mainly heating and cooling your home when no one’s there. We designed Nest to learn from you. As a result, 99% of Nests have schedules that work with your life. And when life doesn’t go according to schedule, Nest can help: Forgot to turn down the thermostat before you left the house? Auto-Away will automatically do it for you. Dreading the summer heat? Airwave keeps you just as comfortable but runs your AC up to 30% less. Coming home early from a weekend away? Use your phone to adjust the temp on your way.