calefacción
/kalefaɡˈθjon/ · B2 · noun · f
heating
🔥🏠 calefacción = calefac- (make warm, Latin calefacere) + -ción (-tion)
Comes from Latin calefacere, 'to make warm': cale- (warm, as in calor, heat) + facere (to make). The suffix -ción turns it into a noun: the act of making a place warm. Same root as English calorie and calefacient.