What Is Commissioning in Construction?
Definition
Commissioning is a quality assurance process that verifies and documents that a building's mechanical, electrical, plumbing, and other systems are designed, installed, tested, and operating according to the owner's project requirements. It ensures that all systems perform as intended before the building is occupied.
Building commissioning begins during the design phase and continues through construction, startup, and initial occupancy. A commissioning agent, or commissioning authority, leads the process and is typically an independent third party hired by the owner. The commissioning agent reviews design documents, develops testing procedures, witnesses equipment startups, and verifies that systems perform under various operating conditions.
The commissioning process includes developing the owner's project requirements, reviewing the basis of design, writing commissioning specifications, reviewing submittals, observing installation, developing functional performance tests, executing those tests, and documenting the results. Systems that are commonly commissioned include HVAC, lighting controls, fire alarm and suppression, emergency power, building automation, and plumbing.
Commissioning has become increasingly important as buildings incorporate more complex and energy-efficient systems. Many green building certification programs, including LEED, require commissioning as a prerequisite. Retro-commissioning and re-commissioning apply the same principles to existing buildings to restore or improve system performance.
Why It Matters
Buildings with uncommissioned systems frequently suffer from comfort complaints, high energy bills, and premature equipment failures. Commissioning catches installation errors, control sequence problems, and design deficiencies before the owner takes occupancy. The cost of commissioning is typically recovered within a few years through reduced energy consumption and fewer warranty calls.
How HomeFloorPlan Helps
HomeFloorPlan supports the commissioning process by providing a plan-based platform where commissioning agents can document findings, track deficiencies, and coordinate corrections with the installing contractors. Issues can be pinned to the exact location on the mechanical or electrical plans, making it clear what needs to be fixed and where.
Frequently Asked Questions
What is the difference between commissioning and testing?
Testing verifies that individual pieces of equipment operate correctly in isolation. Commissioning goes further by verifying that entire systems work together as designed under various operating conditions. Commissioning also includes documentation, training, and verification that the systems meet the owner's operational requirements.
Is commissioning required by building codes?
Many current energy codes, including ASHRAE 90.1 and the International Energy Conservation Code, require commissioning for certain building systems, particularly HVAC and lighting controls. Green building certifications like LEED also require commissioning as a prerequisite.