{"id":1777,"date":"2025-12-05T10:03:42","date_gmt":"2025-12-05T10:03:42","guid":{"rendered":"https:\/\/www.thecotocongroup.com\/?p=1777"},"modified":"2026-05-06T10:00:41","modified_gmt":"2026-05-06T10:00:41","slug":"commissioning-a-comprehensive-review","status":"publish","type":"post","link":"https:\/\/thecotocongroup.com\/blog\/commissioning-a-comprehensive-review\/","title":{"rendered":"Commissioning – A Comprehensive Review"},"content":{"rendered":"

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<\/span>Commissioning \u2013 A Comprehensive Review<\/b><\/span><\/h3>\n

Commissioning is one of the most important aspects that a Building Owner should look at for cost savings, energy consumption reduction, and Compliance with Local Laws. <\/span>Commissioning is an essential process in the lifecycle of a building, ensuring that all systems are designed, installed, and function according to the owner\u2019s requirements and operational expectations. It is critical in enhancing energy efficiency, optimizing performance, and ensuring compliance with local regulations. <\/span>NYC Local Law 87<\/span><\/a> applies to buildings larger than 50,000 square feet and mandates them to file an \u2018Energy Efficiency Report\u2019 (EER) with the <\/span>Department of Buildings.<\/span><\/a> The report has to contain details of the <\/span>energy audit<\/span><\/a> results & <\/span>retro-commissioning<\/span><\/a> measures- both required by the law and deemed penal in cases of non-compliance as a Class 2 violation.<\/span><\/p>\n

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<\/span>The Different Phases<\/b><\/span><\/h4>\n

Commissioning<\/b> is defined as a systematic process that verifies and ensures that a building’s systems operate as intended. This includes mechanical, electrical, and plumbing (MEP) systems, as well as building envelope performance. The commissioning process can be broken down into several phases:<\/span><\/p>\n

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  1. Pre-Design Phase: Establishing project goals and performance criteria.<\/span><\/li>\n
  2. Design Phase: Reviewing design documents to ensure they align with established goals.<\/span><\/li>\n
  3. Construction Phase: Overseeing construction to ensure systems are installed correctly.<\/span><\/li>\n
  4. Acceptance Phase: Testing systems to verify they perform according to specifications.<\/span><\/li>\n
  5. Post-Acceptance Phase: Ongoing monitoring and adjustments to maintain optimal performance.<\/span><\/span><\/li>\n<\/ol>\n

    Building owners are obligated to submit the EER in the calendar year in which the last digit of the year coincides with the last digit of the building\u2019s tax block numbers. The submittals are to be made to LL87@buildings.nyc.gov.<\/span><\/p>\n

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    <\/span>The Importance of Commissioning<\/b><\/span><\/h4>\n
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    1. Energy Efficiency:<\/b> Commissioning helps identify inefficiencies in building systems, leading to reduced energy consumption and operational costs. Buildings that undergo commissioning can achieve substantial energy savings compared to those that do not.<\/span><\/li>\n
    2. Operational Performance: <\/b>By verifying that all systems operate as intended, commissioning improves the overall performance of mechanical, electrical, and plumbing systems. This process can also extend the lifespan of equipment through regular maintenance and adjustments.<\/span><\/li>\n
    3. Regulatory Compliance: <\/b>In cities like New York, compliance with local laws such as Local Law 87 is mandatory for large buildings. Failure to comply can result in significant fines, making commissioning beneficial and essential for property owners.<\/span><\/li>\n
    4. Enhanced Indoor Air Quality: <\/b>Proper commissioning ensures that ventilation systems function effectively, which is critical for maintaining indoor air quality. This is particularly important in commercial buildings, where air quality can affect occupant health and productivity.<\/span><\/li>\n<\/ol>\n

      <\/span>Retro-Commissioning: A Focus on Existing Buildings<\/b><\/span><\/h4>\n

      Retro-commissioning<\/b> is an organized process of documentation that identifies low-cost operational & maintenance improvements in existing buildings. <\/span>While new building commissioning (NBC) focuses on newly constructed facilities, retro-commissioning targets existing buildings that may not have been optimized for efficiency. <\/span>It includes properly analysing operating protocols, calibration and sequencing, cleaning and repairs, and training and documentation issues. The focus lies on mechanical equipment, lighting, and related controls to optimize performance instead of major equipment replacement.<\/span><\/p>\n

      The retro-commissioning process typically involves:<\/span><\/p>\n