When you connect a number of devices to Google Assistant, you've got an integrated smart home system. Just say "dinnertime" to your smartphone on your commute home and Google Assistant can turn on the lights, preheat your oven for dinner, and set your robot vacuum to clean up the kitchen. The T29UTW-7-WIFI earns one of the top spots in our smart thermostat ratings. It rates Excellent for automating your heating/cooling and offers a wealth of smart features to enhance its functionality, including an occupancy sensor (so it can adjust the temperature based on whether people are in a room) and geofencing to turn the temperature up or down when you leave home and return.