Half of home energy use goes to heating and cooling. So lower your thermostat in winter and raise it in summer. Up to 30 percent of a home?s heat escapes through a fireplace chimney. A computer on sleep mode adds $70 to annual electricity costs. Turn it off! Longer showers use more energy?to heat the water. Double-paned windows and insulation keep a house warm in winter and cool in summer. A ceiling fan uses just 75 watts per hour! An open fridge door wastes 215 watts of electricity per hour. Most energy used to wash clothes just heats the water. Dirty air filters in furnaces waste energy. 71

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