“By your side when you need us”

To maintain and support large sites controlled by a BEMS you need the right team behind you.

Our team of dedicated service engineers are located throughout the UK to provide fast response times for call outs to faulty systems and for routine maintenance calls.

Supporting the BEMS is important to ensure that:

– Your system is controlling the buildings environment correctly
– Your system is saving you energy
– Your staff are trained to use the system
– Your system is monitored whilst the building is unoccupied
– Early warning signals are acted on
– Your system is updated regularly


Safeguarding a building’s assets is vital to the success of the business.

Maintenance of your BEMS is pivotal to the effective operation of the majority of a building’s large mechanical and electrical plant. This reduces the risk of breakdowns in critical plant, drives energy bills down and just as importantly, it ensures the optimum levels of comfort for the people that occupy the building.

Demma’s skilled service engineering teams deliver the highest levels of support and maintenance, working side by side with our clients to ensure the ongoing efficiency of the BEMS and all associated hardware.

Our flexible approach allows us to offer a bespoke service delivery plan to each client, covering the maintenance and support of most building energy management systems.

Demma’s service engineers across the country can maintain and support the following systems:

– Andover
– Siemens
– Allen Martin
– Johnson
– York
– Daikin
– Delta
– Trend
– Cylon
– Honeywell
– Satchwell

We offer several different levels of service and can tailor the solution to your requirements. The core services our service engineering teams deliver are:

– Physical PPM visits
– Remote PPM visits
– Reactive call outs 24 / 7 365
– Remote reactive dial ins
– Bureau services
– Hosted solutions

Ask us about our Integrator software that allows you to link different systems together in one central app.