Contract / Inte

HIU Engineer

RGB

Dartford, Kent, DA1 1BG

£42000 - £45000 per annum

Posted: 08 August 2026 (Today)

Closing date: 07 September 2026

Ref: IUHS5

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About the Role

As a HIU Engineer based in Dartford, you will deliver service and breakdown support across London, handling maintenance and repairs on heat interface units within residential and commercial settings. This contract role offers a salary between £42,000 and £45,000, supplemented by a monthly performance bonus of up to 10%. You will receive a company van, fuel card, and private healthcare, with paid travel time included. Working without a call-out rota, you will manage your schedule during standard hours, with overtime available at enhanced rates. Your duties involve diagnosing faults, performing routine checks, and ensuring efficient operation of district heating systems. The position suits a technician with solid mechanical and electrical fault-finding abilities, keen to develop within a supportive building services firm.

HIU Service / Breakdown Engineer
Location : London (Mobile Role)
Salary
£42,000 - £45,000 Basic + Up to 10% Monthly Performance Bonus
Benefits
- Company van and fuel card
- Paid travel (1 hour each way)
- No call-out rota
- 23 days annual leave plus Bank Holidays
- Overtime paid at:
- Time and a half
- Double time (where applicable)
- Vitality Private Healthcare
- Ongoing training and career development
About the Company
An established and growing building services specialist with a team of around 27 employees, delivering maintenance, design, installation and project solutions across London. The business specialises in district heat networks and works on a range of mixed-use, residential and commercial developments.
Due to continued growth, an opportunity has become available for an experienced HIU Service / Breakdown Engineer to join the team.
The Role
You''ll be responsible for carrying out planned preventative maintenance (PPM), reactive repairs and fault finding on Heat Interface Units (HIUs) and associated district heating plant across London.
This is a mobile position working on a variety of modern residential and mixed-use developments, ensuring heating and hot water systems operate safely and efficiently.
Key Responsibilities
- Service, maintain and repair Heat Interface Units (HIUs)
- Diagnose and rectify faults on district heating systems
- Carry out planned preventative maintenance (PPM)
- Attend reactive breakdowns across London
- Work on associated mechanical plantroom equipment
- Complete service reports and documentation accurately
- Provide excellent customer service while representing the business professionally
- Ensure all work is completed safely and in accordance with industry standards
Requirements
- Previous experience servicing and repairing HIUs
- Strong mechanical plantroom experience is essential
- Experience working on district heating networks
- Good fault-finding and diagnostic skills
- Full UK Driving Licence
- Strong communication and customer service skills
- Able to work independently and manage your own workload
What''s on Offer
- £42,000 - £45,000 basic salary
- Up to 10% monthly performance bonus
- Company van and fuel card
- Paid travel (1 hour each way)
- No call-out rota
- Plenty of overtime available (paid at enhanced rates)
- Vitality Private Healthcare
- 23 days holiday plus Bank Holidays
- Stable, long-term opportunity with a growing and well-established business