A heater is an object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Other types of heaters are Ovens and Furnaces.

Calefacción, (del lat. calefactio, -onis). Son sistemas destinados a climatizar en invierno, los ambientes interiores de los edificios, casas, locales comerciales, etc.