New Ecology, Inc. (NEI) installed low-cost monitoring equipment in 103 multifamily buildings in Massachusetts to observe, track, and evaluate hydronic heating and domestic hot water (DHW) equipment operations, performance, and energy efficiency. Their analysis identified significant discrepancies between specified and actual heating and DHW performance. NEI’s results suggest that improvement in equipment performance is possible at each phase of equipment’s life cycle – design, installation, and operation. NEI’s team will detail adjustments that improved performance and fixed problems that included incomplete startup, poorly thought-through setpoint settings, incorrectly balanced mixing valves, improperly located sensors, and reactive maintenance emergencies. Finally, NEI will present follow-up data to show the improvement.