Smart Thermostat nest Meet the 3rd gen Nest Learning Thermostat. It has new rings and a big, sharp display. And it saves energy. That’s the most beautiful part. ecobee SmartThermostat with voice control enhances how you experience comfort. Now powered by eco+ for maximum energy savings with minimal effort. Tado The Smart Thermostat can be automatically controlled via the location of your smartphone as well as manually, by schedule or on the device itself. Honeywell The T6 Pro Smart Thermostat allows you to take comfort knowing your home temperature will always be just how you like it.