Despite being in the deep South, Atlanta winters can be quite cold. Just because your heater is running doesn't always mean it's running well. Regular maintenance is key to avoiding being out in the cold inside your home. Arrange a maintenance plan with a heating and cooling service to inspect your system annually to make sure it's in good working order. Check each room in your home to make sure the rooms in your home are all heating evenly. If you don't already have a digital thermostat, consider installing one. It can give you more control over the temperature, and some have zone control to set different temperatures for each room or zone in your home. When you leave the house, turn the thermostat down, but make sure it's warm enough to keep anything from freezing.