Retrocommissioning (RCx) is getting to be a buzzword, like "green" or LEED, he said at the National Conference on Building Commissioning session, "Tuning up the RCx Process." It's important to make sure that the owner really knows what retrocommissioning means. "Be clear that this is not an energy audit. Find out what the owner really wants."
He defined RCx as "an applied, systematic process to optimize the operation of existing building systems." The process is typically split into four main phases: