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John A. Herbert
John A. Herbert

Commissioning and Retro-Commissioning fine tunes a buildings performance, adding capital value, lower operating costs, and improving comfort conditions for the occupants.

All too often commissioning is overlooked viewed as the last obstacle to payment, something that needs to be conducted swiftly as possible, with little knowledge of the longer term impact on building operations.

Properly conducted commissioning ensures that the systems operate as intended creating comfortable environment for your employees.


Over time your organisation and its needs will change and evolve. However, the E&M systems and particularly the HVAC systems are often over looked - its like running your car for thirty years without a tune-up.

Re-Commissioning is the equivalent of that essential tune-up, lowering operating costs, recovering performance, improving comfort, and importantly rediscovering lost productivity.


Kelcroft advises organisations how to get the most from their existing HVAC systems.

With energy costs escalating saving energy is foremost in the minds of many building owners and facility managers.

But the real question is how can energy be saved, and lower costs achieved without causing other problems? Where can an energy-saving project compete for the same limited dollars an owner has available? One answer may be retro-commissioning.

Retro-commissioning is a systematic procedure to identifying operational and maintenance improvements for existing buildings and for ensuring their continued performance over time.

Would you run a car for thirty years without an annual service? so why run a building that way?

Retro-commissioning process intends not only to optimize how equipment and systems operate, but also to optimise how the all the various systems function together, including the building envelope in an operational setting.


Although retro-commissioning may include recommendations for capital improvements, the primary focus is O&M activities and diagnostic testing to optimise the E&M systems.

Seven good reasons to recommend retro-commissioning process include:

  • Reducing energy and demand costs
  • Improving facility operation and maintenance
  • Bring equipment to its proper operational state
  • Increasing equipment life, lowering the total cost of ownership
  • Improving indoor air quality
  • Reducing complaints and increasing tenant satisfaction
  • Reduce staff time spent on emergency calls

  • Independent Validation

    Kelcroft helps organisations independently monitoring and validate commissioning activities, acting as independent eyes and ears for the entire process from initial Commissioning planning through to commissioning fieldwork, execution, and most importantly O&M documentation.

    Kelcroft's expertise covers a range of energy and environmental products Click here to learn more about Kelcroft's services or call us today.

    Further Information

    For further information regarding Kelcroft's services, call today, our Hong Kong office telephone: +(852) 2335 9830, send us a fax +(852) 2335 9862, or send us an email message

    Related Pages:

  • Commissioning
  • Commissioning Validation
  • Commissioning
  • Retro-Commissioning

    tags: #commissioning