When should the final inspection of a mechanical system occur?

The final inspection of a mechanical system should occur upon completion, as this is the stage where the entire system is fully assembled and operational. This inspection is critical because it verifies that the installation has been conducted according to the applicable codes and standards, ensuring safety and functionality. The inspector will assess everything from correct installation practices to the overall system performance, allowing for any issues to be identified and corrected before the system is put into use.

While inspections can and should occur at various stages of the construction process, such as during construction and after specific milestones like rough-in inspections, these do not replace the need for a final inspection once all components are in place and the system is operational. This final assessment ensures that the installation meets all regulatory requirements and operates as intended, which is vital for both safety and efficiency.