Novel water heater

The utility model relates to the technical field of heating furnaces, in particular to a novel water heater which comprises a hot water exchanger, a cold water exchanger and a semiconductor chilling plate, the hot water exchanger is arranged on the upper side of the cold water exchanger, and a connecting shell is arranged between the hot water exchanger and the cold water exchanger. The semiconductor chilling plate is arranged in the connecting shell, the piston is connected into the connecting shell in a sliding mode, and refrigeration output is carried out while heating is carried out through the semiconductor technology. The working environment in which heating and refrigerating are needed in spunbond production is met, the maximum utilization rate of energy is achieved, efficient heat exchange is conducted on the hot water exchanger and the cold water exchanger through the semiconductor chilling plate, rapid heat exchange is achieved, refrigerating and heating energy consumption of a workshop is reduced,