Mechanical plant rarely fails without warning. It drifts. Valves stick slightly, sensors lose calibration, schedules are overridden during a busy week and never reset, and within a year a building is quietly consuming far more energy than its design intended. Nobody notices until an invoice arrives or a tenant complains. Well planned BMS mechanical services exist to catch that drift early, keeping heating, ventilation and cooling equipment aligned with the way a building is genuinely occupied rather than with…