CxA (Commissioning Authority)

A Commissioning Authority (CxA) is a professional responsible for ensuring that buildings and systems—such as HVAC, lighting, and plumbing—function correctly and efficiently. They oversee the process from design through construction to occupancy, verifying that equipment operates as intended, meets performance standards, and integrates well with other building systems. Their role helps optimize energy use, improve indoor comfort, and reduce long-term costs by identifying issues early and ensuring quality during construction. Essentially, the CxA acts as a facilitator and quality assurance expert, helping deliver a fully operational, reliable, and energy-efficient building.