Programmable thermostats save money by turning up the temperature when you are away from home or at night, limiting the amount of time air conditioning equipment runs.

You can save as much as 10 percent on heating and cooling by simply turning back your thermostat 7-10 degrees for 8 hours a day from its normal setting. With a programmable thermostat, you can do this automatically by scheduling the times you turn on the air conditioning.

Programmable thermostats can store multiple daily settings that you can temporarily manually override without affecting the rest of the daily or weekly program.