Our Services
Engineering for a Net Zero World
Protecting your valuable assets with mechanical and electrical heat maintenance and PPM with 24/7 breakdown support
We’ve worked with managing agents for over 30 years, providing engineering solutions that ensure buildings, both old and new, can operate efficiently and sustainably in this new world of net zero.
Operating throughout London, the Home Counties and Eastern England, we provide mechanical and electrical maintenance solutions to residential and commercial buildings of all shapes and sizes. Our fully trained engineers are some of the most experienced and committed in the industry, so you can be sure your buildings and valuable assets are in safe hands.

Client Portal
We understand it’s important for clients to be updated every step of the way. So we created a bespoke client portal where you can view invoices, job sheets and status reports.
Not registered yet? Read our user guide to get you started.
Heat Networks & Energy Centres

Heat networks are the low carbon solution of choice for supplying heat, hot water and/or cooling efficiently to modern-day apartment blocks.
The heat network principle works by generating energy in a centralised energy centre and distributing it to individual apartment-level Heat Interface Units (HIU’s)
Planned Preventative Maintenance (PPM)

We specialise in providing first class building services maintenance, designed to lighten the load of your responsibilities on a 24/7/365 basis.
With over 30 years of experience in everything from heat networks and boiler plant to water treatment and sanitation, we work hard to ensure the expectations of your residents are met, while actively looking to reduce the carbon footprint of your building.
Technical Engineering
With a skilled work force of gas-certified engineers, plumbers, pipefitters, controls and combustion specialists, you know you’re in safe hands.
We’re proud to be accredited by a wide range of professional and engineering bodies, including ISO 9001:2015 (Quality), 14001:2018 (Environmental) and ISO 45001:2018 (Health & Safety). These achievements mean our clients can trust us to maintain the highest professional standards and deliver on our promises.

Water Treatment
Water treatment is an essential, yet often overlooked aspect of not only maintaining modern building systems, but preserving and extending the life of your assets. Whether it’s ensuring safe drinking water or efficiently managing the distribution of thermal energy, maintaining the quality of water systems is crucial.
Our experienced engineers handle projects of all sizes with the same level of care and professionalism. From safeguarding drinking water to implementing the HSC’s approved code of practice for controlling Legionella (L8), we are committed to providing comprehensive services that prioritise risk management and water quality.

Looking for a Total Heat and Energy Management Provider?
Our partner company, Data Energy, is a leader in energy management through data analytics. Together, we now offer a complete solution for your heat networks and energy needs, from maintenance to energy procurement, metering & billing. Together, we’re driving sustainability, ensuring regulatory compliance, and freeing you to focus on what you do best.

We deliver energy solutions that deliver sustainable and financial returns.
Our objective is simple; to provide industry knowledge that supports property managers in a sector that’s continually evolving, encompassing heat, gas, electricity, water and renewables.
Working nationally, our team of energy managers, engineers and technical consultants help to control all aspects of procurement and supply, so you can focus on the day job.
Insights & Resources

Delivering the Impossible
Wellesley Court, Maida Vale Managing Agent: Parkgate AspenService/ Type of Work: Emergency response and repair DMG Contract: Building Maintenance (traditional)Building Size: Approx 400 ResidentsOur Impact: The crisis at Wellesley Court highlighted our ability to...
Swift Crisis Response and Sustainable Heating Solution
Kingston Riverside, Kingston upon Thames Managing Agent: BartholomewsService/ Type of Work: Emergency Response, System Replacement, and Sustainable Heating Solution DMG Contract: HIU Service & MaintenanceNo of Apartments: 210 ApartmentsOur Impact: DMG’s immediate...
Working in Unison – Maintenance, Metering and Billing
Queen's Quarter, Croydon Managing Agent: Encore Estate ManagementDeveloper: HUBDMG Contract: M&E, HIU Service & MaintenanceData Energy Contract: Metering & Billing ServicesSite: 513 residential apartments, 4 buildings all fed from one energy centre...

Trinergy Titans Take on the NOTB Footy Tournament
At Data Energy and DMG Delta, collaboration powers everything we do – whether we’re delivering expert support for your heat networks or teaming up for a day of friendly competition. Last week, we brought together colleagues from across both businesses to form the...
Mind the Gap: Our Journey Through the TPI Annual Seminar 2025
After months of planning, designing, building (and plenty of sweet-tasting), the TPI Annual Seminar 2025 has officially come to a close – and what a journey it was! This year was a record-breaking event for us at DMG Delta and Data Energy. From the moment the doors...
Close The Gap: Your Route to Heat Network Compliance
Getting You Ready for Ofgem’s New Heat Network Rules: If you’ve been following the Ofgem takeover story so far, you might be feeling even more confused than before. With 23 authorisation conditions proposed under the new regulations and various webinars and...
Coming Up
Close The Gap: Your Route to Heat Network Compliance
Getting You Ready for Ofgem’s New Heat Network Rules: If you’ve been following the Ofgem takeover story so far, you might be feeling even more confused than before. With 23 authorisation conditions proposed under the new regulations and various webinars and...
We’re back for another webinar training session with TPI
We're back for another essential training session with The Property Institute Feeling overwhelmed by heat network regulations? You're not alone. We know property managers today face increasing complexities with the Energy Act, Heat Network (Metering and Billing)...
Mind The Gap How to Get on Track: Navigating the Route to Heat Network Compliance
How to Get on Track for Compliance Ready to bridge your heat network’s compliance gap? If you’re a property manager, you’ve likely noticed the buzz around new regulations for heat networks. These changes, as anticipated under the watchful eye of OFGEM, promise...
Some of our trusted Clients





