光熱水 こうねつすい Meanings Noun light, heating and water (utilities) Kanji 光 light. Read as コウ. 熱 heat. Read as ネツ. 水 water. Read as スイ. Words containing 光熱水 光熱水費 (こうねつすいひ) light, heating and water utility costs Jinuma: Japanese Dictionary · Word lists