Founded in 2002, King Environmental Services (KES) specialises in operational validation for the data centre industry. We act as the technical bridge between a facility’s construction and live operation, helping ensure mission-critical cooling and related systems perform to design before they go into service.

KES delivers an integrated service suite focused on system performance and energy efficiency, including:

• Flushing and water treatment for mission-critical cooling pipework
• Commissioning: Testing, Adjusting and Balancing (TAB) for air and water systems
• Large-scale heat load testing to prove cooling and electrical resilience under simulated load

Testing, Adjusting and Balancing (TAB) measures and adjusts air and water flow rates so installed systems meet design intent. Independent TAB helps confirm thermal stability, improve energy efficiency, protect equipment within manufacturer limits, and provide documented evidence for handover, warranties, and ongoing operations — in line with BSRIA, CIBSE, and ASHRAE guidance.

Pre-commissioning flushing removes construction debris, welding slag, and other contaminants before systems go live. That protects pumps, chillers, coils, and valves; restores free flow; supports design heat transfer; and provides a clean baseline for effective long-term water treatment — using methods aligned with BSRIA, ASHRAE, and international industry standards.

Large-scale heat load testing uses air and liquid load banks to simulate real-world thermal stress before live IT load is introduced. It helps verify design capacity, identify hotspots, prove redundancy, and confirm cooling and electrical paths remain stable under load — particularly important for high-density AI and HPC facilities.

Our site work and reporting follow recognised industry guidance including BSRIA and CIBSE commissioning codes, alongside ASHRAE-aligned practice where relevant. Internally, KES aligns engineering and technician development with the Commissioning Specialists Association (CSA) training pathway, with ongoing upskilling in areas such as flow measurement, thermography, and heat load testing.

KES supports data centre and related projects across Ireland, the UK, and Europe. Many commissioning roles involve work on data hall construction sites across mainland Europe on rotational schedules, alongside projects closer to home.

Visit our Careers page to view current openings and apply online. We offer opportunities for experienced specialists and developing technicians, with competitive packages, international site work where required, and structured training and professional development.