Commissioning is slowly becoming an accepted quality method for ensuring that buildings are designed, constructed, and operated as required by the building owner and as intended by the original design. Retro-commissioning is a process, using commissioning concepts, to ensure that existing buildings are operated and maintained as required by the owner to meet the building's current mission. Retro-commissioning further seeks to incorporate new equipment and operating practices to upgrade existing

more »

... facilities to obtain increased efficiency and employee comfort and productivity. Retro-commissioning practices are not universal. Best practices have been identified to assist Federal organizations with the development of retrocommissioning programs and to help DOE sites to begin this quality related process. iv v SUMMARY This report describes the research and development for an EFCOG Energy Efficiency Working Group Best Practice, the Guidance for Retro-commissioning.