6: Efficient Operation7: Thermostat Settings8: Programmable Thermostat9: Inspection10: Keep Registers Clean11: Trapped Air12: Pipe Insulation13: Inspect Ducts14: Duct Insulation15: Filter Replacement16: Reflectors17: Heat Flow
19: Air Conditioners20: Lower the Thermostat21: Maintain Humidity Levels22: Ceiling Fans23: Curtains24: ENERGY STARClose doors and warm-air vents in unused rooms, but in extreme cold be aware of water pipes that could freeze and burst.
