The four components of energy use under this prerequisite—envelope, lighting, HVAC and hot water—include only those components that are within the scope of CI work. So, if the hot water boiler is owned by the base building, and the tenant is installing a

The four components of energy use under this prerequisite—envelope, lighting, HVAC and hot water—include only those components that are within the scope of CI work. So, if the hot water boiler is owned by the base building, and the tenant is installing a pipe and pumps to deliver hot water to the bathrooms, the prerequisite covers only the delivery method. So the pipe and the pumps must meet ASHRAE requirements for minimum pipe insulation and pump efficiency—the efficiency of the hot water boiler need not be accounted for.