Scroll down to find the complete details of the job offer, including experience required and associated duties and tasks. Salary: £42,000 – £46,000 per annum + company van (personal use permitted), fuel card, overtime, and on-call allowance Location: London and the South (Mobile across client sites)
Applicants must have the existing right to work in the UK; sponsorship is not provided.
Are you a proactive, technically driven HIU & Plantroom Engineer looking to advance your specialist engineering capabilities within a market-leading building services environment?
A Leading Specialist is expanding its operations and seeking a highly skilled HIU & Plantroom Engineer to cover London and the South. This is a pivotal role offering the chance to take full technical ownership of communal heat networks across residential, student accommodation, and commercial portfolios, optimising network efficiency and plantroom lifecycle performance.
The Opportunity:
You will play a vital role in ensuring communal heat networks and central plantrooms operate at peak efficiency and regulatory compliance. Your day-to-day remit involves:
Servicing, maintaining, fault-finding, and repairing heat interface units (HIUs) across key manufacturers (including Danfoss, SAV, and Evinox), covering plate heat exchangers, actuators, control valves, and heat meters.
Commissioning and setting up new and replacement HIU installations, including system flushing, hydraulic balancing, and return-temperature optimisation.
Executing planned and reactive maintenance across commercial plantrooms, servicing pumps, pressurisation units, buffer vessels, expansion vessels, and associated control systems.
Diagnosing network distribution issues—such as bypass faults, high return temperatures, and low flow rates—while logging accurate digital compliance records and service sheets via mobile job management software.
The Package:
£42,000 – £46,000 basic salary, fully expensed company van with personal use allowance, fuel card, specialist tooling, PPE, and on-call/overtime enhancements.
Company workplace pension scheme, standard holiday entitlement, and comprehensive employee support.
Funded training programmes (including G3 Unvented Hot Water and manufacturer-accredited HIU courses) with clear internal career progression pathways.
Technical Essentials:
To be successful, you must demonstrate high-level technical proficiency:
Mandatory: NVQ Level 2/3 in Plumbing & Heating (or equivalent recognized trade qualification); G3 Unvented Hot Water certificate held or committed to completing funded certification.
Compliance/Systems: Strong working knowledge of CP1 (Heat Networks Code of Practice), Heat Trust standards, and G3 compliance frameworks; proficient with mobile CAFM/reporting applications. (WRAS, Legionella awareness, or TMV servicing certifications advantageous).
Experience: Proven field track record in commercial plantroom servicing, hydraulic wet heating systems, heating controls, and direct HIU diagnostic/repair work.
Mobility: Full UK Driving Licence with flexibility for mobile regional coverage across London and the South and inclusion on an out-of-hours on-call rota.
For more information apply today. xrexnqw Take the next step in your Building Services career with a market leader that prioritises clear communication, technical excellence, and the continuous development of its people.
