At Dunphy, we specialise in off-site manufactured packaged plant room solutions that provide flexibility for customers with unique energy needs. Packaged plant rooms are self-contained energy centres designed and manufactured off-site in our factory complex in Rochdale. These solutions often combine industrial boilers with burners and controls for maximum efficiency.
Every unit is engineered to suit site-specific factors such as available space, fuel type, and load requirements. The plant room is designed, constructed and tested at our premises and then transported to the site where it is reassembled, commissioned and ready to use.
A packaged plant room is a pre-assembled building or containerised module that houses essential heating, hot water, and energy generation equipment.
These units are manufactured, wired, and tested off-site before being delivered to site as an instant solution ready for immediate connection to your existing services.
Dunphy’s packaged solutions are engineered for performance, compliance, and long-term reliability tailored to each client’s load profile and energy strategy.
All core components are manufactured in-house, including:
We also produce all necessary technical documentation, such as FDS reports, DSEAR analyses, and SIL assessments.
Once on site, the plant room is quickly reconnected and commissioned by our experienced mechanical and electrical engineers, minimising downtime and disruption, essentially they’re plug in and play.
Packaged plant rooms are used across a diverse range of industries including:
Hospitals and healthcare facilities – for consistent heating, hot water, and sterilisation systems
Schools, colleges, and universities – offering scalable, centralised energy solutions for multiple buildings
Manufacturing and industrial plants – ensuring reliable process heating and energy management
Food processing facilities – where hygiene and temperature control are critical
Pharmaceutical and chemical sites – requiring strict compliance and safe energy infrastructure
Data centres – supporting cooling systems and backup power integration
Commercial developments and office buildings – reducing installation time and on-site disruption
Leisure centres and hotels – maintaining hot water and heating for large-scale use
Large residential developments – providing a compact energy solution with minimal visual impact
Tailor-made solutions
Our in-house design engineering teams and full manufacturing facilities allow us to create bespoke solutions to match your unique requirements.
Highly flexible
Off-site construction reduces project risk and site disruption, allowing rapid delivery of packaged plant rooms across the UK and internationally.
Unlimited scalability
There are no limitations on the size or complexity of your solution. Our manufacturing facilities are equipped to handle projects of any scale.
Comprehensive reporting
We provide full Functional Design Specifications (FDS), DSEAR analyses, and SIL assessments, ensuring compliance and transparency throughout the project.
High degree of safety
Dunphy is ISO 45001 certified, Safe Contractor approved, Achilles UVDB approved with a strong focus on health and safety in every stage of production and installation.
Proven track record
As pioneers in off-site manufactured solutions, we were first to market with these systems and have 15 years of experience delivering high-quality results.
A pre packed plant room is partially assembled off-site, with equipment mounted and pre-piped on skids or frames but still requiring significant installation, interconnection, and commissioning work on site. In contrast, a prefabricated plant room is a fully built, self-contained unit complete with structure, equipment, internal pipework, wiring, and controls, manufactured and tested off-site and then delivered ready for quick plug and play connection, minimising site work and disruption.
Modular plant rooms are fully integrated, pre-engineered energy centres built from individual modules that connect seamlessly on-site to form a complete, high performance system. Similar to our packaged plant rooms, our modular plant rooms are also assembled and factory-tested at our Rochdale facility.
This modular approach enables flexible design, rapid deployment, and easy scalability across a wide range of applications.
Key advantages of modular plant rooms include:
Scalable architecture – modules can be added or reconfigured to match changing load or capacity requirements.
Rapid installation – pre-tested units are delivered ready for fast connection and commissioning.
Flexible integration – suitable for phased projects, hybrid fuel systems, or restricted-space environments.
Reduced downtime – on-site assembly is streamlined, minimising impact on operations.
We take a holistic approach to modular plant room projects, ensuring every aspect is carefully planned and executed to meet your requirements and timelines. With dedicated teams at every stage, you have access to our expert staff throughout the process, from initial design to final commissioning.
Our services include:
Design and Manufacture
All key energy centre components, such as axial airflow burners, sequencing control systems, BG01-compliant control panels, hotwells, gas boosters, and fuel pumps, are designed and built in-house to ensure quality and compatibility.
Compliance and Reporting
We prepare all necessary Functional Design Specifications (FDS), DSEAR analyses, and SIL assessments for your project.
On-Site Commissioning
Once delivered, the modular plant room is rapidly reconnected and commissioned by our experienced mechanical and electrical engineers, ensuring seamless integration into your operations.
With over 15 years of experience delivering modular plant room solutions, we have partnered with clients across diverse sectors, including:
Food Manufacturing: Supporting production with efficient, reliable energy systems.
Chemical Processing: Delivering tailored energy centres for critical processes.
Pharmaceutical Facilities: Ensuring precise and consistent energy supply for demanding applications.
Hospitals: Providing dependable energy for critical healthcare services.
Wastewater Treatment Plants: Enabling efficient and environmentally responsible operations.
Here’s what Andrew Bowen, a Construction Manager had to say about working with us:
“The hard work and dedication that went into this off-site manufacture was truly remarkable. It required meticulous planning, precision engineering, and innovative design to create high-quality products in a controlled environment. A master class in off-site manufacture.”
A packaged plant room provides a ready-to-use energy hub that delivers heating, hot water, or process energy. All key components from burners and boilers to pumps and control systems are assembled and tested off-site, then delivered as a single, operational unit that connects directly to existing services.
Off-site manufacture ensures precision assembly under controlled conditions, reducing build times and avoiding weather-related delays. It also improves safety, quality assurance, and commissioning speed while minimising on-site disruption which is essential for projects in live or sensitive environments such as hospitals or data centres.
Yes. Each plant room is designed to meet your site’s footprint, fuel type, and output requirements, whether gas, biofuel, hydrogen blend, or hybrid. Modular layouts, remote monitoring, and integrated safety systems allow complete flexibility across scale and application.
Packaged plant rooms are trusted in sectors where dependable heat and power are critical including healthcare, education, food manufacturing, utilities, and large-scale residential or commercial developments. They’re particularly valuable for projects requiring rapid deployment and strict performance control.
Because most assembly and testing occur off-site, installation time is dramatically reduced. In many cases, systems can be fully operational within days of delivery which is significant advantage over traditional on-site builds.
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