It comprises two of Microsolar's high-efficiency thermosiphonic solar heater units, which deliver 70 °C hot water for cleaning and sterilizing the milking machines. Microsolar's water heaters are designed and assembled in Malaysia for the international market. They are of a patented coaxial multivalve design: 30 large vertical heating pipes lead from the collector panel directly into the tank. With no bottlenecks, the water heater can reach a very high level of efficiency, the manufacturer explains.