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Commissioning (Cx) is a quality-based process in which a facility, system selections, application techniques and performance values are verified and documented to meet the objectives and criteria defined for the building.

Objectives: Owner's Project Requirements (OPR)

Criteria: Design acceptance, local standards… (Basis of Design – BOD)

Benefits for the Building Owner

  • It is ensured that the systems work as intended by the building owner.

  • By maximizing efficiency, energy, maintenance and operating costs are reduced

  • Increases tenants' comfort, increasing retention time

  • Requirement for green building certifications

Benefits for Designers

  • It provides acceptance testing of key systems and verification of their functional performance against project values.

  • It contributes to the coordination between design disciplines.

  • As a result of the comparison of the dynamic data obtained with the theoretical data, it gives important experiences in terms of future designs.

Benefits for Contractors

  • Improves construction planning and coordination

  • Allows the job to be completed with fewer shortcomings

  • Reduces operators' returns to contractors thanks to the excellent documentation it provides

The Commissioning (Cx) process in ASHRAE Standards consists of four stages:


It is the preparatory phase of the Cx process where OPR is developed. This phase includes program requirements, community context, laws and regulations, site and climate, facility context and function, facility technology, sustainability, cost, timing, and customer (including owners, users, operators, and maintenance personnel) needs and capacities. Information about the project is collected.


At this stage, the building owner's requirements (OPR) are included in the scope of the specifications. A document called "design fundamentals (BOD)" is created that clearly conveys the assumptions made in the development of a design solution that fulfills the intent and criteria in the document called "OPR". Explanatory explanations of plant systems and accessories are prepared and included in the design principles. Cx plan; expanded to cover the details of construction, use and operation phase activities.


During the construction phase of the Cx process, systems setup and associated assemblies are performed, inspected, tested and commissioned to meet the project owner's requirements. During this phase, the system manual (SM) is delivered and user trainings are given.


The use and operation phase of the commissioning process begins with the completion of a substantial amount of work. As a minimum, the commissioning process activities that start at this point continue until the end of the warranty period in the contract. During the use and operation phase, the ongoing operation, maintenance and documentation of plant systems and assemblies is validated against current OPR.

ENVE Energy provides Cx service for new buildings or renovation projects with its expert staff with AHRAE Commissioning qualifications.



The process of testing, adjusting and balancing (balancing) all selected machinery and installation equipment for the mechanical installation systems to work in harmony with the design is called TAB or TAD. In order to ensure and maintain the desired conditions in the system, testing, adjustment and balancing processes must be run after assembly.
Test: It is the process of evaluating the performance of system elements.
Adjustment: It is the throttling and opening operations performed to obtain the values determined during the design process from the relevant equipment.
Balancing: It is the work done to obtain the desired values in the system sections (main line, secondary line or equipment) by adhering to the design data.

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