The process of retro-commissioning is a focused assessment of the equipment and function of an existing building. Retro-commissioning is the first step to developing a concise plan for building upgrades and renovation.
The purpose of retro-commissioning is to identify the problems which have developed over the life of the building. The result is an established action plan for decreasing energy consumption and restoring the building to optimal performance. The benefits of retro-commissioning include decreased cost of operation, improved comfort for building occupants, improved equipment function, and increased asset value.
Each retro-commissioning project is tailored to the complexity of the facility, renovation cost restraints, and owner needs. Our approach to retro-commissioning involves a customized, systematic process that results in a final report detailing the deficiencies that should be addressed to optimize building performance.
This first phase of retro-commissioning involves defining the goals of the owner and the deliverables that are expected when the process concludes. Facility operators, occupants and maintenance personnel are interviewed at this time. Our personnel analyze power consumption as compared to a typical building of similar size and function. Reviews are completed on maintenance contracts and other pertinent documents (drawings, controls, O&M’s). Once this analysis is complete, the Audit Phase approach is customized for the project.
Facility Audit Phase
This phase begins with a kick-off meeting to discuss the approach that has been developed for the audit and listen to issues raised by facility staff and building occupants. A site walk is performed to observe equipment installation, assess maintenance practices and inspect the building envelope. Facility function and energy performance is recorded with use of our infrared thermography camera, power quality meter, airflow hood, and other required testing equipment. The results of the testing are then compared to original design intent and a deficiency list is developed.
The implementation phase of retro-commissioning involves developing and presenting the final report. Our report describes building envelope conditions, the building system performance and operations, integrity of the maintenance program, and the comprehensive facility deficiency list. The report and findings are presented to the owner and a collaborative strategy is developed for the resolution of deficiencies.