Specialist HIU Commissioning
for New Build & Heat Network Projects
R&B London HIU Engineers provides commercial HIU commissioning in London for developers, M&E contractors, managing agents and communal or district heating projects. We commission Heat Interface Units in line with manufacturer recommendations, set flow rates and temperatures correctly, carry out balancing where required, configure controls or software, and provide an individual HIU commissioning certificate for each unit.
What is included in our HIU commissioning service?
Our HIU commissioning service is designed to deliver correctly configured Heat Interface Units that operate efficiently from day one. On commercial and residential developments, poor HIU commissioning can lead to high return temperatures, unstable hot water performance, avoidable call-backs, increased running costs and scheme-wide performance issues.
During HIU commissioning, each unit is checked, set up and adjusted in line with manufacturer recommendations. Design temperatures and flow rates are applied where available, balancing is carried out where required, and suitable commissioning parameters are used where full design information is not available. The goal is to help each HIU perform properly while supporting low primary return temperatures across the wider heat network.
- HIU commissioning in line with manufacturer recommendations
- Correct flow rate and temperature setup
- Balancing to reduce inefficiency and poor network performance
- Software and controller setup where required
- Mechanical HIU tamper identification seals where applicable
- Individual HIU commissioning certificate for each unit
HIU commissioning engineers on active sites
Commercial clients want to see real project capability. These site photos help demonstrate fleet capacity, engineer presence, commissioning progress and practical experience on new-build and replacement HIU projects.
Who our HIU commissioning service is for
This HIU commissioning setup is built primarily for commercial customers and also for one-off domestic visits, with content focused on project delivery, handover quality and heat network performance.
Developers & New-Build Schemes
We support HIU commissioning on new-build projects where correctly set up units, handover documentation and reduced post-completion defects are essential.
M&E Contractors
We work alongside M&E contractors who need specialist HIU commissioning engineers for communal heating systems, district heating schemes and phased delivery programmes.
Managing Agents & Asset Teams
We assist managing agents and asset teams where replacement HIUs, late-stage handovers or previously uncommissioned units need to be properly set up and recorded.
How our HIU commissioning service works
From initial review through to final certificates, our HIU commissioning process is designed to support a cleaner handover, more reliable unit performance and stronger project records.
Project Review
We review the project scope, HIU model, unit quantities, design temperatures, flow rates and any manufacturer-specific requirements before commissioning starts.
Unit Setup
Each HIU is checked and commissioned in line with manufacturer recommendations, including controls, balancing and software setup where required.
Performance Checks
We verify temperatures, flow rates and correct operation while aiming for efficient HIU performance and lower practical primary return temperatures.
Certification
On completion, an individual HIU commissioning certificate can be issued for each unit for handover, records, warranty registration and future reference.
Why proper HIU commissioning matters
HIU commissioning is not just about making a single unit run. Correct HIU commissioning supports the efficiency of the Heat Interface Unit and the wider communal or district heating system. Done properly, it helps reduce unnecessary running costs, limit flow and temperature issues, improve handover quality and support better heat network performance across the building.
BESA, CP1 and HNTAS-aware thinking during HIU commissioning
Our HIU commissioning approach is informed by manufacturer instructions together with recognised UK heat network good practice. Where applicable to the project, we work with reference to CIBSE CP1 principles, HNTAS-style expectations around records and consumer heat system performance, and BESA-style HIU performance thinking around temperatures, operation and return temperature outcomes.
CP1-Oriented Commissioning
We commission HIUs with attention to temperatures, balancing, flow rates and return temperature behaviour in a way that supports recognised UK heat network good practice.
HNTAS-Ready Records
Clear HIU commissioning records for each unit support structured handover, future verification, better traceability and stronger technical records across consumer heat systems.
BESA Performance Awareness
We recognise the value of practical HIU performance outcomes such as stable operation, suitable domestic hot water delivery and lower return temperature behaviour where achievable.
Experience across leading HIU brands and systems
Our engineers have hands-on experience across a wide range of HIU commissioning, service, repair and replacement work.
Evinox HIU Commissioning
Commissioning support for Evinox HIUs including software-led setup, settings configuration and manufacturer-style commissioning checks.
New HIU Setup
Correct initial HIU setup is critical on new installations to avoid unnecessary faults, weak handover and poor performance from the start.
Specialist Site Engineers
Experienced HIU commissioning engineers with practical knowledge of servicing, repairs, replacement projects and live site commissioning work.
HIU commissioning FAQs
Do you only provide HIU commissioning for commercial clients?
Most HIU commissioning enquiries are commercial, including developers, M&E contractors, managing agents and communal heating projects. We also offer one off commissioning for individul residents and small contractors.
Do you issue a commissioning certificate for each HIU?
Yes. Once the project is completed, an individual HIU commissioning certificate will be produced for each unit. This is useful for future reference, handover records and warranty registration.
Can you commission HIUs without full design temperatures and flow rates being provided?
Where design information is not available, suitable HIU commissioning settings can still be applied while aiming to keep primary return temperatures as low as possible during operation.
Why is HIU commissioning important on district heating schemes?
Poor HIU commissioning can affect not only the individual unit but the efficiency of the wider district heating system, increasing running costs and creating avoidable performance issues.
Request a HIU commissioning quote
Contact us for a free no-obligation quote for HIU commissioning in London. Suitable for commercial developments, phased handovers, heat network projects and HIU replacement programmes.