ENERGY EFFICIENCY
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Modern solutions to overcome commercial plant room challenges
The demands placed on commercial plant rooms have evolved. Where large equipment was once the norm, today’s systems must deliver high performance from increasingly compact spaces, while integrating low carbon technologies. Here Darren Townend, commercial product manager at Hamworthy Heating explores how modern plant room design is adapting to these pressures and the role modular and hybrid heating solutions play in meeting them
Challenges facing modern plant room design
Space is often the biggest challenge in modern plant room design, particularly in town centre commercial buildings where floor space is a valuable commodity. Where large systems were once typical, today’s focus on energy efficiency and compact solutions requires a more considered approach. Plant rooms must now fit boilers, pumps and controls while maintaining safe access for installation, commissioning and maintenance. Efficiency is also a key concern. Oversizing equipment to account for peak demand is no longer sustainable. Systems must now operate efficiently across a broad range of loads, and this shift demands adaptable solutions that can scale with changing building use and energy consumption. The one-size-fits-all approach is outdated: today’s plant rooms must be flexible enough to accommodate
16 May 2026
future innovations and building changes without costly retrofitting.
Modular boilers: compact, flexible & resilient
To meet these demands, modular boilers provide an effective solution. Available as single units or modular configurations stacked horizontally or vertically, most modern boilers are designed specifically to deliver high heating outputs from a very small output area. However, beyond saving space, their main advantage is the ability to match output to a building’s needs. Systems can scale with demand and high turndown ratios enable efficient operation even at lower loads, reducing cycling losses and energy consumption. Modular configurations also enhance operational resilience. By dividing output across multiple modules, the system can adjust to changing demand and continue operating even if one unit is offline.
Expanding the approach: hybrid plant room solutions
While modular boilers offer an effective solution for many plant rooms, hybrid systems are increasingly being adopted to support decarbonisation goals. By combining traditional boilers with low carbon technologies, such as air source heat pumps, hybrid systems improve overall efficiency while reducing carbon emissions. In a hybrid arrangement the heat pump
typically acts as the primary heat source, transferring heat rather than generating it, therefore operating more efficiently than conventional systems. As outdoor temperatures fall, the boiler provides reliable back-up to maintain comfort. Boilers such as the Stratton mk3 and ModuMax mk3 can be integrated with Tyneham air source heat pumps in hybrid plant room configurations.
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