Water Heater
Your water heater uses 4,000 watts of electricity per hour, so it’s costing you 40 cents an hour. Fortunately, your water heater doesn’t run all day long — it only runs when it’s actually heating water. The less hot water you use, and the lower the temperature of that water is, the less energy your water heater will use.
Adjusting your water heater to the lower temperature setting will save energy. Make sure you are using hot water efficiently by only running the dishwasher when it’s completely full, and only using hot water to wash clothes when it’s absolutely necessary.