ACG Certified Commissioning Authority (CxA) Practice Exam

The key idea is that planning for retrocommissioning starts by understanding what already exists in the building records. Reviewing existing documentation gives you critical context about current equipment, control sequences, setpoints, energy data, and past issues. This baseline lets you see what’s been documented, what the design intent was, and where information is missing, so you can accurately identify performance gaps and define realistic goals for the retrocommissioning effort.

Because you’re looking to establish a solid starting point, this review directly informs what needs to be addressed in the project scope and timing. Other activities—defining the retrocommissioning scope, selecting the CxA, and drafting the plan—depend on the insights gained from that documentation review, but they aren’t the step that involves examining the records themselves.