A commissioning checklist confirms that installed systems are complete, safe and working as designed before handover. What to check at each stage, a sample structure for HVAC and electrical systems, and how to track sign-off.
A commissioning checklist is the set of checks that proves an installed system — HVAC, electrical distribution, fire alarm, a process line, a whole building — is complete, safe and performs as designed before it is handed over to the people who will operate it. Commissioning sits between installation and handover, and it is where drawings meet reality: valves installed the wrong way round, sensors wired to the wrong input, controls that were never configured. A commissioning checklist makes those checks repeatable and gives every system a signed record.
Each line should name the system and component, the check to perform, the expected value or condition, the measured result, pass or fail, and who did it on what date. A tick without a value is not evidence — record the airflow, the insulation resistance reading, the setpoint. Group the lines by system rather than by trade, because the client accepts systems, and a system that is 95% commissioned is not yet usable.
Do not start dynamic commissioning until pre-commissioning is signed off. Energising a system with incomplete static checks is how equipment gets damaged and people get hurt.
Ettex Forms turns a commissioning checklist into a form engineers complete on a tablet on site: required fields for measured values, photos per line, and a signature at the end of each system. Failed lines can be copied straight onto a snagging list, and the completed forms go into the handover document pack instead of being retyped from paper.
Pre-commissioning covers static checks with the system de-energised, such as installation, pressure and insulation tests. Commissioning starts when the system is energised and tested in operation.
Usually the installing contractor performs the checks, often overseen by a commissioning manager or independent commissioning agent acting for the client.
A commissioning sheet is the record for one system or component: the checks performed, measured values, results and signatures. A set of sheets makes up the commissioning checklist for the project.
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