Commissioning is a methodical process of testing an existing facility’s systems and equipment to ensure they are still functioning according to the original design intent or to adjust any deviations

Over time, building systems can experience inefficiencies due to wear and tear, operational changes, or improper maintenance. Regular testing and commissioning help identify performance gaps, optimize system functionality, and ensure compliance with energy efficiency standards. This process not only improves occupant comfort and system reliability but also reduces energy costs and extends equipment lifespan. Key aspects of this approach include detailed inspections, functional performance testing, data analysis, and corrective adjustments. By systematically evaluating HVAC, lighting, and control systems, facility owners can enhance operational efficiency, meet sustainability goals, and ensure long-term cost savings.

Recommissioning is an inclusive and systematic process applied regularly to existing buildings, especially when performance degrades significantly or if proper commissioning was not initially conducted

Its goal is not only to optimize the operation of individual equipment or systems but also to enhance how these systems function together. The recommissioning process is a critical activity for buildings of any age, addressing key issues such as discovering life safety concerns following construction, identifying malfunctioning equipment and sensors, diagnosing causes of poor indoor air quality, resolving control optimization problems like sub-optimal chilled water supply temperatures, and detecting schematic inefficiencies in building operation, such as simultaneous heating and cooling.