A device for heating liquids to be supplied to the human body includes an electric heating, a conduit for passing liquid there through, which conduit includes a conduit body on which the electric heating acts for supplying heat, and a heating which acts by electromagnet radiation on the liquid in order to heat it, characterized in that the heating is a microwave heating which includes a microwave generator and a housing which is shielded against microwaves and which includes a cavity in which the microwave generator generate a microwave field, and that a section of the conduit is disposed to extend in the cavity.
