Yes, you can. All you need to install a digital programmable thermostat It automatically sets back the temperature in your home to preset levels at different times of the day. For example, in winter, you can decrease the temperature by certain degrees as you may be comfortable while you asleep. Depending on the seasons, even a greater savings can be achieved by setting your system to work at lower/higher degrees temperature while no one is home. For example in winter, by setting your system 7 to 9 or rather more degrees Fahrenheit lower at the time where no one home can save your utility cost even more than 10% in terms of natural gas as well as electricity consumption. The system works the same way for summer cooling savings. Just set it raises the temperature while you’re sleeping or away from home to cut air conditioning costs.