The Construction Index Ltd
Wet Worker
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Salary: £42000 - £43000 per annum + Van and Fuel Card
Type: Full Time
Region: UK - London
Town/City: Lambeth, London
Posted: 08/07/2026
Reference: DE1_1783499628
APPLY Job Description
Commercial Wet Worker (WRAS Approved Operative)
Daniel Owen is seeking an experienced Commercial Wet Worker (WRAS Approved Operative) to join our Commercial Heating & District Energy Team. You'll be responsible for the installation, servicing, maintenance, commissioning, and fault-finding of communal and district heating systems, with a strong focus on Heat Interface Units (HIUs) across residential and mixed-use developments.
Key Responsibilities
- Install, service, repair, and commission Heat Interface Units (HIUs).
- Diagnose faults and carry out repairs on communal and district heating systems.
- Maintain heating controls, including Y Plan, S Plan, thermostats, programmers, motorised valves, and smart controls.
- Install and maintain radiators, pumps, valves, and associated plumbing systems.
- Carry out planned preventative maintenance (PPM) and reactive repairs.
- Complete commissioning, system balancing, and performance testing.
- Maintain accurate job records using PDA/mobile devices.
- Participate in an out-of-hours call-out rota.
- Deliver excellent customer service while working safely and in line with company procedures.
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About You
- City & Guilds Level 2/3 Plumbing qualification.
- Formal Water Regulations/WRAS qualification.
- Minimum 3 years' experience working on district heating systems.
- Strong experience servicing and fault-finding on Heat Interface Units (HIUs).
- Knowledge of communal heating systems, heating controls, and safe isolation procedures.
- Full UK driving licence.
- Able to work independently and as part of a team.
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Desirable
- G3 Unvented Hot Water qualification.
- HIU manufacturer training.
- Low Temperature Heating Systems training.
- Experience working within communal plant rooms.
What We Offer
- Competitive salary and benefits.
- Company vehicle, tools, and equipment.
- Ongoing training and manufacturer development.
- Long-term career opportunities with a leading property maintenance contractor.
If you're an experienced HIU and district heating engineer looking for your next challenge, we'd love to hear from you.
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