Hong Kong Bank Building 160 Sansome Street, San Francisco Class A Office Building Year Constructed: 1964 Gross Square Feet: 100,000 Net Rentable Square Feet: 98,000  Floors Leased: 18 floors office space Height: 250 feet Steel Structure with concrete composite wall sections  Tinted exterior glazing Three Elevators Space Heating Zone heating is supplied by hot water coils on main air system. Purchased steam is converted to hot water through a heat exchanger. Controls 286 PC Pneumatic and DDC (Direct Digital Control) System with limited automation of central plant; some occupancy sensors. Installed 1985. System is operated only during the hours of 6am to 6pm, Monday through Friday.  HVAC Distribution  Chilled water is produced in a central plant. Conditioned air is distributed through supply and return ducts. Ten of eighteen rentable floors have been converted from constant volume (CV) to variable air volume (VAV); once all floors have been converted, the system will operate as a VAV system. Lighting T-8 lamps with electronic ballasts.