#heater__warmer  device that heats water or supplies warmth to a room
  supertype:  #device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  subtype:  #brazier__brasier  large metal container in which coal or charcoal is burned; warms people who must stay outside for long times
     subtype:  #hibachi  a portable brazier that burns charcoal and has a grill for cooking
  subtype:  #convector  a space heater that transfers heat to the surrounding air by convection
  subtype:  #defroster__deicer  heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane)
  subtype:  #demister  heater that removes mist from the windshield of a car
  subtype:  #gas_heater__gasheater  a heater that burns gas for heat
  subtype:  #heating_pad__heatingpad__hot_pad__hotpad  heater consisting of electrical heating elements contained in a flexible pad
  subtype:  #oil_heater__oilheater__oilstove__kerosene_heater__kerosine_heater  heater that burns oil (as kerosine) for heating or cooking
  subtype:  #radiator.heater  heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
  subtype:  #solar_heater__solarheater  a heater that makes direct use of solar energy
  subtype:  #space_heater__spaceheater  heater consisting of a self-contained (usually portable) unit to warm a room
     subtype:  #electric_heater__electric_fire  a small electric space heater
        subtype:  #heat_lamp__infrared_lamp  electric heater consisting of a high-power incandescent lamp that emits infrared radiation; "the bathroom could be warmed by an infrared lamp"
  subtype:  #stove  any heating apparatus
  subtype:  #hot-water_heater__hotwaterheater__water_heater__waterheater  a heater and storage tank for the heated water
     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

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