Expanding the existing DLWC system by adding a fourth pipe will save 220 million gallons of water annually, reduce peak electricity demand by 60 megawatts, reduce Greenhouse gas emissions by 33,000 tons and boost the cooling capacity of the network by 60%.

With systems dating back into the 1800s, hydronic heating has been around a long time. As with many technologies, a modern hydronic heating system bears little resemblance to one based on the earliest design techniques and hardware.