Also means
water heater
Usage Note
Calentador most commonly refers to a water heater (calentador de agua) in Mexico and much of Latin America, or to a space heater. In Spain, calefactor or radiador is more common for room heating, while calentador is still used for water heating. The related verb is calentar (to heat/warm).
Examples
"El calentador de agua no funciona bien."
Natural Translation
The water heater is not working well.

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