Retro-commissioning is the process of improving an existing building’s equipment and system efficiencies. Its purpose is to solve problems that may have occurred during a building’s design or construction from years prior. If a building was never properly commissioned from the start, it probably never benefited from missed energy efficiency opportunities as well as cost-saving opportunities.


Not only does Gausman and Moore perform commissioning verifications and tests on our new construction designs, we will retro-commission any building with equipment and systems that are underperforming.


How does it work?


First, what is commissioning? It’s the process of ensuring a building’s operating systems (mechanical, electrical, HVAC) are installed and programmed properly during a building’s construction phase. So with the knowledge that an older building was never properly commissioned during construction, an existing building’s owner, manager, or maintenance staff may recognize a need for a retro-commission by professional engineers.


Every retro-commissioning plan can be customized to each building or facility's needs. For example, a customer may request a commissioning team simply deliver a list of items the facility’s staff needs to tackle. Or the team can perform a full retro-commission on the building and follow the basic commissioning steps.


Phases of retro-commissioning:


1.      Planning. The building owner or manager must outline the building’s operating requirements, as well as the scope of expected work, the project’s overall goals, the list of commissioning team members, deliverables, and a working time frame.

2.      Investigation. The team of experts and engineers will examine the facility in great detail, starting with the review of important documents, such as O&M manuals, equipment lists, etc. They will then examine and test equipment and systems in the building and note factors such as energy consumption to determine if the systems are responding correctly to temperature changes.

3.      Implementation. The team of experts will then deliver a list of findings to the building owner or manager. The list will also include recommendations for how to fix the problems, the cost of each repair. The owner or manager can request the same team improve the building’s performance or pay a third party to conduct repairs.

4.      Handoff. Following our retro-commissioning service, we will spend time educating the current building operations and maintenance staff on proper equipment use and upkeep.


The goal of Gausman and Moore’s retro-commissioning services is to optimize performance for a building’s equipment and systems, and ensure they function together seamlessly. Our mission is to create a more sustainable world one building at a time. If you suspect your facility is in need of a retro-commissioning plan, contact us today to get started.