Waste
Extravagance
noun, verbal noun, の adjective
ろうひ
無駄遣い (むだづかい、not on WK) Waste (Of Money, Time, etc.), Squandering, Frittering Away
勿体ない (もったいない) Wasteful, A Waste, Too Good
浪費 (ろうひ) Waste, Extravagance
消費 (しょうひ) Consumption, Expenditure
拾う (ひろう) To Pick Something Up, To Find Something, To Gather Something
疲労 (ひろう) Fatigue, Weariness
披露 (ひろう) Announcement, Show, Display, Introduction, Perform
He only uses the low ろう heat ひ setting to reduce energy Waste.