Air Conditioner: In summer, set your thermostat to the highest comfortable setting. Consider setting the thermostat at 80 degrees while you are away. The higher the setting, the lower the cooling portion of your energy bills will be.
Heating System: In winter, set your thermostat to the lowest comfortable setting. The lower the setting, the lower the heating portion of your energy bills will be. Have your system inspected regularly to help it perform more efficiently. Change air filters regularly. A dirty air filter makes your heating system work harder, which uses more energy.
Electric water heater: Set your water heater to around 120 degrees to save 6% to 10% on energy costs to heat the water. Install low-flow fixtures for water savings of 25% to 60%.
Refrigerator and freezer: Your refrigerator should be 35 to 38 degrees Fahrenheit. The freezer should be 4 to 5 degrees if it is part of a fridge/freezer unit. For a separate freezer, use a setting of 0.
Washer and Dryer: Try to do laundry earlier in the day in summer and in the evening hours during winter. This will help prevent your cooling or heating system from working too hard. For additional savings, wash clothing in cold water whenever possible.