Flushing & Water Treatment Technician

Crwit Resourcing is looking for a Flushing & Water Treatment Technician who will play a key role in preparing hydronic (water- based) HVAC systems for commissioning and handover by ensuring pipework cleanliness and appropriate water treatment.

Responsibilities:

Carry out pipework flushing and cleaning operations on HVAC water systems using dynamic and static flushing techniques, including circulation, filtration and removal of construction debris.
Perform chemical treatment and dosing of closed-loop and water distribution systems (e.g., chilled water, heating loops, condenser water) to achieve required water quality prior to commissioning.
Conduct water sampling and analysis, interpret results for parameters such as pH, conductivity, suspended solids and contaminants, and adjust treatment as required.
Operate and maintain flushing equipment, pumps, side-stream filters, dosing rigs, hoses, valves and strainers safely and efficiently on site.
Follow BSRIA BG29/BG50 and CIBSE Code W best practice guidance for hydronic flushing and chemical cleaning operations.
Prepare detailed work reports, compliance documentation and certification of flushing and water treatment activities.
Work collaboratively with commissioning engineers, project managers and subcontractors to coordinate flushing tasks into the wider commissioning programme.
Ensure all work complies with health, safety and environmental regulations, including COSHH where chemicals are used.

Requirements:

Previous experience in HVAC system commissioning, water treatment, pipework flushing or mechanical services.
Familiarity with hydronic systems (chilled water, heating circuits) and water quality testing equipment.
Ability to read and interpret HVAC drawings and specifications.
Strong attention to detail and ability to produce accurate technical documentation.
Valid full UK/Ireland driver’s licence (if travel to project sites is required).
Good communication skills and ability to work well within multidisciplinary teams.

Desirable Qualifications

Formal training or certification in water treatment, Legionella control, BSRIA or related HVAC commissioning standards.
Health & Safety qualifications (e.g., Safe Pass, COSHH training).

Working Environment & Benefits

Field-based role visiting client project sites across Ireland and potentially Europe.
Company vehicle and travel expenses paid (typical for field technicians in this sector).
Opportunities for professional development and industry training.

Crewit Resourcing Group

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