• 117 Tolmers Rd, Cuffley, Herts EN6 4JL
  • 0208 351 3395
  • info@priorygasheating.com

Commercial Heating Engineers London

Our heating engineers work on commercial systems of all sizes, including boilers, pumps, pressurisation units, and heating controls. We support projects across London where a complete understanding of system performance is required, from new installations to complex upgrades. All work is designed to improve efficiency, reduce emissions, and meet current regulations. We work directly with facilities managers, contractors, and consultants.

What the Service Includes

We provide expert engineering support across all aspects of commercial heating systems, from individual plant components to full-system upgrades and commissioning. Our work focuses on improving energy performance, delivering system reliability, and ensuring all equipment operates in line with current standards and regulations. Whether we are working on a legacy plantroom or a newly specified system, our engineers take a methodical, system-wide approach tailored to each site.

System Design, Upgrades & Installation

  • Heating system planning and consultation
    We assist with the design and layout of commercial heating systems in collaboration with M&E consultants and contractors. This includes specification of pipe sizing, zoning requirements, flow rates, and integration with existing infrastructure.

  • Pump and pressurisation unit installation
    We install commercial circulators, booster sets, and expansion equipment. This includes fitting, electrical integration, and commissioning of associated safety devices, valves, and sensors.

  • Pipework replacement and zoning upgrades
    We carry out targeted pipework upgrades to address flow issues, pressure drops, or heat imbalance. Zoning is improved through the installation of new control valves, actuators, and localised thermostats.

  • Heating controls and BMS integration
    Our engineers connect plantroom components and terminal units to central control systems, including standalone and networked BMS. We configure control logic, setpoints, time schedules, and provide functional testing on completion.

Commissioning, Troubleshooting & Optimisation

  • Full system commissioning
    We carry out controlled system start-up procedures, including filling, venting, pressure testing, calibration of controls, and confirmation of performance against design criteria. Commissioning sheets and handover documents are supplied upon completion.

  • System diagnostics and performance assessment
    Our engineers use flow readings, temperature differentials, and system pressure data to identify inefficiencies or operational faults. We assess the impact of oversized pumps, bypass issues, or poorly balanced circuits.

  • Hydraulic balancing and thermal adjustment
    We carry out balancing of secondary circuits, ensuring even heat distribution and efficient load control. This includes adjusting pump speeds, valve settings, and emitter flow rates to match zone demand.

  • Energy optimisation and emissions reduction
    Where required, we modify existing systems to reduce energy waste. This may involve upgrading controls, adjusting boiler sequencing, or improving insulation and sensor placement. We also install low-NOx compliant plant to meet current air quality standards.

  • Regulatory compliance and system documentation
    All work is undertaken in line with relevant British Standards and Building Regulations. We provide commissioning records, updated schematics where required, and guidance on maintaining system performance post-handover.

Typical Projects

We support larger system projects involving multiple components, whether plantroom upgrades, BMS integration, or hydraulic optimisation.

  • School campus – North London
    Design and commissioning of a zoned heating system for multiple blocks, including new pumps, isolation valves, pipework upgrades, and temperature control interfaces. All works were phased to avoid disruption to school operations.
    Total project value: £28,000

  • Mixed-use block – Central London
    Performance review and rebalancing of secondary heating circuits, including replacement of oversized pumps and modification of control sequences. Adjustments resulted in lower energy use and improved occupant comfort.
    Total project value: £9,000

  • Commercial premises – South London
    Upgrade of heating infrastructure in an occupied building, including new control panel, pressurisation equipment, and shunt pumps. Commissioning and documentation were included to satisfy building management compliance requirements.
    Total project value: £19,000

Who We Work With

We work with clients managing or specifying complete heating systems. From design to upgrade works, our heating engineers support complex requirements across a variety of commercial and specialist building types.

  • Consultants and M&E designers – We provide engineering input for heating system layout, control strategy, and plant integration.
  • Facilities managers – We assist with full system upgrades, zoning improvements, and heating performance optimisation.
  • Landlords and freeholders – We support heating system replacements and upgrades in line with building regulations and emissions targets.
  • Main contractors – We act as heating specialists on larger projects requiring technical coordination.
  • Asset managers – We deliver solutions focused on long-term reliability and energy cost reduction.

Efficiency & Environmental Considerations

Our commercial heating solutions are developed with efficiency and compliance at their core. From optimising flow rates to integrating modern control systems, we design heating systems that reduce energy use and emissions across the life of the building. Where applicable, we install low-NOx boilers and integrate zoning to reduce unnecessary heat delivery. We also ensure correct pipe sizing, pump selection, and control settings, all of which contribute to measurable savings in energy consumption and reduced carbon impact.

Why Choose Priory Gas Heating

Our commercial heating engineers work across London on complex systems requiring both technical knowledge and site experience. We support projects involving plantroom upgrades, zoning improvements, and full heating system design. With Gas Safe and NICEIC accreditation, we ensure all work is carried out to current standards. We also work alongside consultants and contractors to ensure integration with BMS and control systems. Our aim is to deliver systems that are easy to manage, efficient to run, and built to last.

Accreditations & Compliance

Our commercial heating engineers are Gas Safe and NICEIC accredited, enabling us to work across both gas and electrical aspects of commercial heating systems. All works comply with relevant British Standards, including BS 6644 and Part L of the Building Regulations. We provide commissioning records and operating manuals as part of the project handover. Where control systems or pressurisation units are involved, we ensure they are tested and set in line with manufacturer and regulatory guidelines.

Speak with a Commercial Heating Engineer

To discuss a project with our commercial heating engineers in London, whether it involves a new system, an upgrade, or technical troubleshooting, get in touch with Priory Gas Heating Ltd. We work with contractors, consultants, and facilities teams on heating systems across a wide range of building types.