Why Every Facility Manager Should Consider Retro-Commissioning

In the world of facility management, ensuring optimal performance while reducing operational costs is a perennial challenge. One of the most effective strategies to achieve these objectives is through retro-commissioning. This comprehensive process involves assessing and optimizing existing building systems to ensure they are operating as efficiently as possible. Unlike standard commissioning, which is applied to new buildings, retro-commissioning focuses on existing structures, making it an essential practice for sustainable and cost-efficient building management.

Understanding Retro-Commissioning 

Retro-commissioning is a systematic evaluation of mechanical, electrical, and control systems within an existing building. The primary goal is to identify areas where energy usage can be minimized, and system functionality can be enhanced. This may involve adjusting settings, repairing components, and sometimes upgrading systems to improve overall operational efficiency. The differences between commissioning, re-commissioning, and retro-commissioning are significant. Commissioning is for new buildings and focuses on ensuring installed systems perform interactively according to the design intent and the building owner’s operational needs. Re-commissioning is applied to buildings that have been previously commissioned to ensure they still meet original operational needs. Retro-commissioning, however, applies to buildings that have never undergone the commissioning process and are likely underperforming or have outdated systems.

The Benefits of Retro-Commissioning 

Energy Efficiency and Cost Savings 

One of the most compelling reasons for facility managers to consider retro-commissioning is the potential for substantial energy savings and cost reductions. Facilities that undergo retro-commissioning can often expect significant reductions in energy use, sometimes as much as 15% to 20%. For instance, a study by the Lawrence Berkeley National Laboratory found that retro-commissioning leads to median energy savings of 16% in large office buildings. These savings translate directly into cost benefits, reducing operational expenses and increasing the financial bottom line for businesses.

Improved System Performance and Equipment Lifespan 

Retro-commissioning not only enhances the performance of equipment but also extends its operational lifespan. This can defer costly replacements and reduce long-term capital expenditures. By fine-tuning existing systems, the functionality of equipment is markedly improved, contributing to smoother operations and less downtime. 

 Enhanced Occupant Comfort and Safety 

Improving indoor air quality and maintaining consistent temperatures are direct benefits of retro-commissioning. These improvements contribute to a healthier and more comfortable environment for occupants, which can increase productivity and satisfaction. Additionally, better system control and performance enhance safety within the facility, a crucial factor for all facility managers to consider.

 Environmental Impact 

Adopting retro-commissioning practices supports green building practices by significantly lowering a building’s carbon footprint and helping facility managers meet stringent environmental regulations. In an era where sustainability is increasingly prioritized, retro-commissioning offers a practical pathway to more environmentally friendly operations.

When to Consider Retro-Commissioning 

Facility managers should consider retro-commissioning for buildings with aging systems, significant modifications, or chronic operational issues. Additionally, facilities facing new certification or regulatory requirements can benefit immensely from this process. Buildings that have seen changes in usage or have systems that no longer perform optimally are ideal candidates for retro-commissioning. 

The Retro-Commissioning Process

The process begins with planning and pre-assessment, where goals are set, and building documentation and past performance data are gathered. In the investigation phase, a detailed review of all systems is conducted to identify inefficiencies and malfunctions. The implementation phase involves executing necessary adjustments, repairs, or upgrades. Finally, the hand-off phase ensures that facility staff are trained on new changes and comprehensive documentation is provided for ongoing maintenance and performance monitoring. 

Overcoming Challenges

Despite potential upfront costs and operational disruptions, the long-term savings and benefits of retro-commissioning often outweigh these challenges. Facilities can phase the implementation to minimize disruption and manage costs more effectively. Addressing budget constraints and operational disruptions proactively is key to a successful retro-commissioning initiative. 

Conclusion

Retro-commissioning is not just a maintenance task; it is a strategic investment in the future of any facility. By adopting this initiative, facility managers can ensure more energy-efficient buildings, enhanced occupant comfort, and a notable reduction in environmental impact. For those considering retro-commissioning, it is advisable to start by evaluating the building’s current performance and consulting with energy-saving solutions experts to tailor a plan that suits specific needs and goals. With the right approach, retro-commissioning can transform an existing building into a model of efficiency and sustainability. 

For more detailed guidance on implementing retro-commissioning in your facility, consider exploring resources and consulting experts in energy-saving solutions such as Energy Star’s guide on commissioning.