Thermostat

According to SRP:

Winter Months:
Set the thermostat to 70 degrees or lower when you are in the home to stay comfortably warm. When you're not home set the thermostat to 65 degrees or lower.

Maintaining your heating system is one way to save energy during the winter months. Regular maintenance minimizes the chance of a costly breakdown and keeps the system operating at peak efficiency. Even minor malfunctions can cause a unit to run longer and work harder, shortening the unit's life and increasing energy usage.

During the day open your drapes to let the heat in, and close them at night to help keep it in.

If you have a high ceiling, switch your ceiling fans to the "up" position to blow upward (rather than downward) and circulate teh warm air trapped near the ceiling down into the room.