Monitoring-Based Commissioning and traditional commissioning serve complementary but distinct purposes with different timeframes, methodologies, and outcomes.
Traditional Commissioning is often a construction budget and time-bound process focused on verifying that systems are correctly installed and initially performing as designed. Commissioning occurs during construction and extends through the warranty period (typically 12 months post-occupancy), then concludes with a final report. The commissioning authority conducts functional testing at specific points, substantial completion, seasonal conditions, and post-occupancy review, but typically doesn’t continuously monitor performance.
Monitoring-Based Commissioning is an ongoing process that often begins after traditional commissioning concludes and can continue indefinitely. MBCx uses continuous data collection and analytics rather than periodic testing events. The focus shifts from initial verification to persistent optimization and degradation prevention. In some cases monitoring-based commissioning may also be purchased by the construction budget for one or more years and turnover future carrying costs to the facilities O&M or Energy Management budget.
Key differences:
Duration: Traditional commissioning may last 12-24 months for example; MBCx continues for the building’s operational life (or as long as MBCx is funded). In some cases MBCx is further integrated into the owners BAS system and turned over to operations and in others a 3rd party continues to perform spot checks and reporting.
Methodology: Traditional commissioning uses manual functional testing; MBCx employs automated monitoring with periodic testing.
Focus: Traditional commissioning verifies initial compliance; MBCx optimizes ongoing performance and catches degradation.
Resource intensity: Traditional commissioning requires concentrated commissioning authority presence during testing periods; MBCx requires less frequent site presence with more data analysis.
Problem detection: Traditional commissioning finds installation and startup issues; MBCx identifies operational drift, equipment degradation, and optimization opportunities.
Cost structure: Traditional commissioning has defined project cost; MBCx typically involves ongoing annual fees.
Complementary relationship: Traditional commissioning establishes proper baseline performance that MBCx then maintains and optimizes. Buildings receiving only traditional commissioning often experience performance degradation within 3-5 years. MBCx prevents this degradation by catching and correcting problems early.
The ideal approach combines both: traditional commissioning ensures proper initial installation and operation, overlapping or followed by MBCx to maintain and improve performance throughout building life.
To further evaluate integrated commissioning strategies combining traditional and monitoring-based approaches, contact Catalyst Commissioning Group at info@catalystcx.com.