Commissioning tends to be treated as the last gate before invoicing. We treat it as the first document of the maintenance phase, because it is the only record of what "correct" looked like on the day everyone agreed the system was correct.
Two years later, when a room is running warm, the useful question is not "what should this be?" but "what was this, when it was right?" Without a commissioning record, every diagnosis starts from first principles.
What ours contains
- As-built schematics, including the changes made during installation
- Design versus achieved figures side by side, with the ambient conditions of the test
- Control setpoints and defrost schedules as left, not as specified
- Alarm configuration and who it notifies
- Outstanding items, if any, with dates — an honest snag list beats a clean one
The report is not proof that we finished. It is the baseline that makes the next ten years diagnosable.
