The new Cordivari BOLLY® PDC represent the most advanced solution in terms of efficiency, savings and sustainability. The domestic hot water production is playing a crucial role on it. For this reason, the BOLLY® PDC, specifically designed for heat pump systems, is maximizing the efficiency of the installations, by maximizing the performance and the productlife of the heat pump. The innovative BOLLY® PDC, combined with a heat pump and thanks to the stratifying patented Heat Exchanger Group guarantees performances up to 30% higher compared to a traditional calorifier in terms of ignition time and heat exchanging efficiency. All this means a greater comfort, a significantly reduction of power consumption of the heat pump up to 15%, as well as a reduction of start-up cycles of the devices, for the benefit of all installation.