└ Heating and cooling equipment, air-conditioning appliances
      ├ air-conditioning
      ├ fan heater
      ├ panel heater
      ├ oil-heater
      ├ heater (from stove)
      ├ kotatsu
      ├ Hot carpets and mats
      ├ Foot warmer, foot bath
      ├ humidifier
      ├ air cleaner
      ├ electric fan
      └ dehumidifier
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