“Check, check and check again…”

‘Commissioning’ is the process of ensuring that a building’s operating systems are designed, installed and programmed for optimal performance. Once your BEMS system is fully installed, our commissioning engineers then fully test it before it goes live.

The commissioning engineer will:

– Check all the wiring and connections
– Apply the power to the new system
– Install the control software
– Test the BEMS controller
– Test all the devices that are connected to the controller
– Install Client User Interfaces
– Test and prove the control software and user interfaces
– Provide a certificate to state that the system is fully operational

We also provide a recommissioning service for existing or older systems to test all aspects of operation and ensure that they are running efficiently.


Our expert commissioning teams ensure that they are always at the cutting edge of their field.

They use the latest technology to deliver the ultimate finished system, fully optimised to provide the best user experience.

We design systems using products from the leading manufacturers in the world including Trend, Honeywell, Cylon, Delta and Johnsons. These systems are user friendly, seamlessly interacting with the environment and all associated mechanical and electrical equipment.

Our courteous and professional team of engineers always put our clients first, ensuring that all works meet with their expectations.

Demma’s commissioning engineers understand how BEMS can help building owners and occupiers meet the demands of current regulations. Our teams are driven to deliver continuous improvements in the systems they commission to provide our customers with essential peace of mind.

Professionally managed BMS systems can do much more than simply monitor energy usage. They can actively predict and report problems, storing important energy-consumption and environmental data. By analysing this data, building managers can identify faults or trends in the operation of their building services plant.

Our commissioning engineers have many years experience of proving and setting plant to operate efficiently, and effectively. They know exactly how to ensure the longevity of your plant operation and achieve optimal system energy efficiency.
 Through continuous investment in their development & training we ensure that they are always up to speed, so that they can keep your systems up to speed.

Sharing knowledge with our clients is part of our philosophy, and we also integrate user training and live demonstrations within our approach. This added service means that each user has exactly the right level of interaction they require, for example to monitor and enhance comfort levels whilst also maximizing energy savings. Once the commissioning process has been completed, we always generate and record all system settings and the operational standards attained. These performance figures are presented to you as part of your full commissioning certificate.

All commissioning works are provisioned with a parts and labour warranty on completion.