In some aspects, the subject technology relates to an “Eco-mode” on a thermostat. A button or other user interface element may be configured to activate and/or deactivate) the eco-mode on the thermostat. Upon selection of the eco-mode option, various energy-saving programs can be implemented on the thermostat. The energy-saving programs can be configured to adjust a temperature setting of the thermostat or to provide notifications to a user associated with the thermostat that implement various approaches for reducing energy consumption of a heating, ventilation, and air condition (HVAC) system associated with the thermostat. The eco-mode button can provide users/consumers with a convenient way to save energy, without requiring the user to think of comfort tradeoffs that may need to take place.