The AERCO 124362 Power Supply Board is a genuine OEM electrical component designed for AERCO high-efficiency boilers and water heaters used in commercial HVAC systems. It converts and regulates incoming electrical power, delivering stable voltage and current to control circuits, sensors, and system modules for reliable operation. https://www.partshnc.com/124362-aerco-boiler-and-water-heater-power-supply-board