Which item is typically updated in the BAS after Cx?

• A. Parking layout
• B. Marketing slogans
• C. Employee names
• D. Sensor calibration values and setpoints in BAS.

Answer: (D)

Sensor calibration values and setpoints in the BAS are updated after commissioning to reflect what was verified in the field and what the design intends for operation. This ensures readings from sensors match the actual environment, so control actions occur at the correct temperatures, flow rates, and ventilation levels. It also locks in the verified operating targets (setpoints) so the system performs as planned, supports proper energy use, and maintains occupant comfort. Having these details in the BAS provides accurate baselines for maintenance, diagnostics, and future re-tuning. Parking layout, marketing slogans, and employee names are administrative or branding items and don’t affect how the building’s controls operate.