We provide power saving centralized Water Heating System, which is designed to provide 50^oC to 60^oC hot water (500 liters per hour to 10000 liters per hour). The Water Heating System consumes very less power, as it does not use power to generate heat, instead the power is used just to operate the machinery which transfers the heat from atmospheric air to the water. Water Heating System is most suitable to heat bathing water in bulk for hotels, hospitals, hostels, and other public places and also for swimming pool heating.