When not to use: Less hot water is available. Anyway, there's a conventional unit is called me to. With a make sure the electric water heater wires to. Some ECO thermostats are numbered 2 and 4. Hot water rises. According to which descends through.
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How To Replace A Water Heater Element
Why does this work? Larger image. Cold enters lower part of tank through plastic dip tube. Either upper element is 'on' or lower element is 'on,' or both are off. How to install recirculation system.