This commissioning guide addresses all of the commissioning phases. Part One of this guide describes best practices for procuring and executing the commissioning process for new buildings and major renovations. Commissioning for new buildings and major renovations starts in the project planning phase and proceeds through the design, construction, and occupancy and operations phases. The Commissioning Guide also addresses recommissioning, retrocommissioning, and continuous/ongoing commissioning. The recommissioning process is used for existing buildings that previously have been commissioned. Retrocommissioning is
used for existing buildings that never have been commissioned and is required for NASA to meet their 2015 Sustainable Building requirements. It often has the quickest financial payback of all of the commissioning phases. The continuous/ongoing commissioning process is used to provide continuous/ongoing commissioning for buildings that have been commissioned using one of the methods described above.
