Cast aluminum heater is widely used in the water heater industry and is the core of the water heater. The traditional heater directly heats the heating rod and water, and the heating rod is easy to form and scale. The cast aluminum heater is a circuit, water with cast aluminum integrated die-casting, external cast aluminum heat conduction heating water, water through the water, electricity through the circuit, water and electricity separation, greatly improve the service life and safety of the water heater