"A programmable thermostat can save you money on your utility bill - up to 33%, if used as directed.  You set it up to adjust the temperature when you are away from home or asleep - when you don't necessarily need optimum comfort - and your HVAC equipment runs less.  Plus, your heating or cooling comes back to a comfortable level automatically when you come home or wake up.  Most Honeywell Programmable Thermostats carry the EPA's EnergyStar® rating and are designed to be very easy to use."

- Honeywell