Hello LEED Community at large. . .

My mechanical engineer is interpreting this Prereq. based on the LEED Reference Guide for ID&C which states on page 148 under Section 4. Implementation, ". . .only HVAC systems built for the project are within the scope of work." "Built for the project" would imply that base building systems that were previously designed and installed at the time of construction of the building - not the TI work - are exempt from the no CFC requirement.

However the information on this site leads me to believe that the existing base building HVAC&R equipment that serves the TI space IS subject to the no CFC requirement.

Help me out! Which interpretation is correct?

Thanks!