District Heating Commissioning Engineer

District Heating Commissioning Engineer - Heat Networks / HIUs

London & South East - Field Based £45,000-£55,000 Basic Salary + Benefits Full-Time | Permanent

We're recruiting an experienced District Heating Commissioning Engineer for an established UK heat network specialist providing metering, technical and operational services to residential and commercial developments.

This is an excellent opportunity for an engineer with experience in district heating, Heat Interface Units (HIUs), heat metering or communal heating systems to work on technically challenging projects across the growing UK heat network sector.

You'll be responsible for commissioning, testing and troubleshooting heat network equipment, ensuring systems operate efficiently, reliably and in accordance with project requirements.

The Role

Commission and test district heating and communal heating systems

Carry out commissioning and functional testing of Heat Interface Units (HIUs)

Commission heat meters, associated controls and metering communication systems

Test heating and domestic hot water performance across residential developments

Check system temperatures, pressures, flow rates and differential pressures

Diagnose faults involving HIUs, control valves, pumps, sensors and associated equipment

Verify heat meter readings, connectivity and data transmission

Support the commissioning of new-build heat networks and existing system upgrades

Work with mechanical contractors, developers and property management teams

Review mechanical drawings, hydraulic schematics and commissioning documentation

Identify installation defects, performance issues and commissioning requirements

Assist with balancing, system optimisation and energy efficiency improvements

Support the integration of metering and pay-as-you-go systems

Complete commissioning reports, test certificates and handover documentation

Provide technical support to internal engineering and operations teams

Ensure all work complies with relevant health and safety requirements

The Candidate

Experience as a Commissioning Engineer, District Heating Engineer, HIU Engineer or Mechanical Commissioning Engineer

Strong understanding of district heating, communal heating or hydronic heating systems

Experience commissioning or fault-finding Heat Interface Units (HIUs)

Knowledge of heat meters, flow measurement and temperature controls

Understanding of heating system hydraulics, differential pressure and water flow

Experience with pumps, control valves, heat exchangers and associated mechanical equipment

Ability to interpret mechanical drawings and hydraulic schematics

Good electrical and mechanical fault-finding skills

Experience with metering communications, M-Bus or remote monitoring advantageous

Familiarity with CIBSE CP1 Heat Networks Code of Practice beneficial

Relevant qualification in Mechanical Engineering, Plumbing, Heating or Building Services

Strong technical reporting and communication skills

Comfortable working independently across multiple sites

Full UK driving licence

Candidates currently working as HIU Engineers, Heat Network Engineers, Commissioning Engineers, Commercial Heating Engineers or Mechanical Building Services Engineers are encouraged to apply.

Package

£45,000-£55,000 basic salary

Full-time, permanent position

Company vehicle or travel allowance

Specialist heat network and metering training

Exposure to new-build and existing district heating developments

Opportunity to work with modern heat metering and monitoring technologies

Technical development and career progression

Established UK heat network specialist

The Opportunity

This is an excellent opportunity for an experienced District Heating Commissioning Engineer looking to develop their career within the UK's expanding heat network industry.

You'll work on residential and mixed-use developments, supporting the commissioning and optimisation of HIUs, heat meters, communal heating systems and associated controls.

The role offers the opportunity to develop specialist knowledge in district heating commissioning, hydraulic performance, smart metering and heat network efficiency, with progression into senior technical and engineering management positions.

Commissioning Engineer → Senior Commissioning Engineer → Technical Manager → Head of Engineering

WR HVAC | M&E are the #1 recruitment partner for HVAC and M&E vacancies across the UK, Europe, and the USA. We work with manufacturers, distributors, contractors, and service providers across the heating, ventilation, air conditioning, refrigeration, and building services sectors, recruiting for sales, management, engineering, and technical roles.

WR HVAC | M&E is acting as an Employment Agency in relation to this vacancy