The best smart thermostat is one that can seamlessly connect to a Wi-Fi network. It should take very little time to set up. The thermostat should also be easy to program your typical heating and cooling schedule. Since it determines the heating and cooling temperatures, its usage should enable you to save energy, resulting in lower utility bills. The good smart thermostat should control whole-house humidifiers, ventilation system, and other HVAC attachments to improve the air quality in your home. It should be possible for you to update the app controlling the smart thermostat automatically.