Impurities in water are inevitable, and they cause sediment
to build up in your tank. The result: heat transfer between the heating element
and the water is slowed down, and you use more energy.
To solve the problem, open the drain valve on your water
tank and release about five gallons of water.
In most areas, cleaning out sediment every six months is
sufficient. If you have unusually hard water, check with your municipal water
works for their recommendation.
