What Is Commissioning for Building Systems?
Building commissioning is the systematic process of verifying that MEP systems perform as designed. It's required by energy codes for most commercial buildings and catches the installation errors that cause 90% of building performance problems.
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What gets commissioned
HVAC systems (airflow, controls, economizer operation), lighting controls (occupancy sensors, daylight harvesting), domestic hot water, building automation systems, and renewable energy systems. The commissioning agent develops test procedures, witnesses functional testing, and documents results.
When it's required
IECC and ASHRAE 90.1 require commissioning for commercial buildings over certain sizes (typically 10,000+ SF, varying by jurisdiction and code edition). California Title 24 has specific acceptance testing requirements. LEED certification requires fundamental commissioning, with enhanced commissioning as an additional credit.
Why it matters
Studies consistently show that 80-90% of buildings have significant control or installation deficiencies that commissioning catches. Common findings: economizers not working, sensors miscalibrated, sequences of operation not implemented, lighting controls miswired. Fixing these during commissioning costs hundreds; fixing them after occupancy costs thousands in energy waste.
The bottom line
Commissioning verifies MEP systems work as designed. Required by code for most commercial buildings, it catches the errors that cause energy waste.
Torch Engineering PLLC · (480) 490-0064 · info@torchengineering.com — PE stamping backed by Apex Grid Engineering.