Abstract: The invention relates to a device for electrically heating (1) a liquid, comprising a heating body (11), and a housing (3) defining, at least in part, a chamber (30) for circulating the liquid, the heating body (11) comprising at least one electric heating element (7, 9) extending in the chamber (30) and attached to an inner wall of the device defining, at least in part, the chamber (30) for circulating the liquid, so as to form a first mechanical connection. According to the invention, the electric heating device (1) comprises at least one mechanical connecting element (21) arranged in the chamber (30) and mechanically connecting the at least one electric heating element (7, 9) to an inner surface of the housing (3) extending opposite the heating body (11), so as to form a second mechanical connection separate from the first mechanical connection.