Retro-commissioning (RCx) can be largely defined as the process of improving the operational and maintenance aspects of an existing building. As these types of measures are typically embedded in the behavior and sequences of daily building operation, determining areas of improvement requires a systematic process of analysis, testing, implementation, and verification. There are several models utilized across the industry that range from a "find-andfix" approach that focuses on identifying opportunities and immediately fixing them to a detailed analysis approach centered on quantifying the measureable impacts of each opportunity prior to implementing the measure. This paper is aimed at achieving a structured middle-ground between these two approaches that integrates the "find-and-fix" approach into the traditional process of detailed analysis followed by implementation. Details provided in the following sections are from the perspective of a utility sponsored RCx program that requires a level of rigor in quantifying the impacts necessary for resource planning. While such an approach may have been implemented on an ad-hoc basis in many utility sponsored RCx projects, this paper offers a structured method that improvises the traditional process to align with the end goal of effective yet verifiable and timely implementation. Some of the key benefits attributable to our approach and elaborated in the following sections of the paper are increased project momentum, increased certainty of project completion, a reduction in project completion time by about 50% and more involvement in implementation from all the stake holders.
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