It's normal to see energy usage—and bills—spike in the cold winter months. Shorter days force homeowners keep the lights on longer, and dropping temperatures lead to extended runtimes for both furnaces and space heaters. Those things aside, there's a lot that can be done to reduce energy costs. For instance, turning down the temperature on the thermostat as well as the water heater translates to lower bills. If you decorate with holiday lights, opt for efficient LEDs that use less energy to put out the same amount of light. Perhaps most importantly, seal or cover drafts, including the windows, doors, and the fireplace damper when not in use.