#hot-water_heater__hotwaterheater__water_heater__waterheater  a heater and storage tank for the heated water
  supertype:  #heater__warmer  device that heats water or supplies warmth to a room
  subtype:  #water_back__waterback  water heater consisting of a tank or pipes set at the back of a fireplace or in the firebox of a stove

No statement uses or specializes #hot-water_heater; click here to add one.