I lead a cooling-services company by asking whether the whole operating system can support the promise, including the energy, duration and dependencies that a single equipment figure leaves out.
I began my career around cooling equipment, where a service visit often had a clear immediate objective. Restore the machine, record what was done and return it to the responsible operator. Company leadership later required a broader account. A machine could perform better while the plant used more electricity, and a large storage figure could leave the intended service duration unsupported. The transition was not simply from engineering to finance. It was learning to ask which part of the promise a familiar technical measure left outside the frame.
A service promise belongs to the whole system that must deliver it, not the component whose performance is easiest to present.