The water heater is the second largest consumer of residential energy. When you run the hot water for a short time, such as to wash your hands, cold water replaces the water removed from the hot water tank, and the water heater must work to heat that water, even though you never felt the water run warm from the faucet. If you do not need hot water, just turn on the cold tap so that the water heater does not have to turn on unnecessarily. Taking shorter showers and washing laundry with cold water also saves heating costs and saves money too. Lowering the set temperature on your water heater reduces the overall cost of heating water.
Photo by Susan O'Donnell