Simply resetting the thermostat when you are asleep or away from home can save money on heating and cooling bills. By adjusting the thermostat four-to-six degrees either up (in the summer) or down (in the winter) reduces the total run time of the heating and air system, leading to a reduction on the energy bill. A programmable thermostat can aid in money-saving measures by allowing you to set the temperature on a daily and seasonal basis.