BMAC retained as the plumbing engineer for a 20-storey high-rise residential building, for re-designing the domestic hot water recirculation system, which was originally set up as a three-zone domestic water distribution system. The existing system had multiple deficiencies, including persistent leakage in the aging copper return lines and oversized recirculation pumps that contributed to excessive energy consumption and system imbalance.
BMAC conducted a detailed site investigation, hydraulic assessment, and redesign of the entire recirculation system. BMAC proposed replacing the deteriorated copper return piping with new Uponor PEX piping to improve system durability and reduce long-term maintenance. Existing over sized recirculation pumps were also replaced with more appropriately sized high-efficiency ECM pumps. The updated design ensured optimal circulation, improved temperature balancing across all floors, and significantly reduced energy usage.