AHU Commissioning & Service Engineer Suitable for: HVAC Commissioning Engineer | Air Handling Unit Commissioning Engineer | HVAC Service & Commissioning Engineer | Ventilation Commissioning Engineer | Building Services Commissioning Engineer | HVAC Field Service Engineer Overview A leading HVAC manufacturer is seeking an experienced Commissioning & Service Engineer to support its growing installed base across London and the South of England. The company is a recognised supplier of commercial ventilation and air handling solutions used across healthcare, commercial, education and industrial buildings. Due to continued growth and increased demand for commissioning and technical support, they are expanding their field engineering team. The role focuses primarily on commissioning, diagnostics and technical support for complex air handling equipment. The Role This position centres on the commissioning, fault finding and technical support of commercial air handling equipment across new build and refurbishment projects. Engineers will work closely with mechanical contractors, commissioning managers and consultants to ensure systems are correctly set up, operating efficiently and meeting design performance. Key responsibilities include: Commissioning of commercial Air Handling Units (AHUs) on live projects Functional testing, airflow verification and performance validation Fault finding and technical diagnostics on ventilation systems Working with integrated systems including heat pumps and refrigeration-based cooling elements within AHUs Providing technical support to contractors during installation and commissioning stages Occasional service visits and troubleshooting of installed equipment Producing commissioning reports and documentation The role is field based, covering London and the South of England, with travel depending on project locations. Requirements Experience commissioning or servicing commercial AHUs / ventilation systems Strong fault-finding and diagnostic capability within HVAC systems Knowledge of airflow balancing, controls and system performance testing Experience working on commercial building services projects Desirable: refrigeration knowledge (beneficial for units with integrated cooling or heat pump systems) Ability to liaise with mechanical contractors, consultants and site teams Full UK driving licence Engineers from HVAC commissioning, ventilation service or refrigeration backgrounds will be considered. Package Salary: £40,000 - £50,000 depending on experience Company vehicle Field-based role covering London & South of England Manufacturer training on specialist equipment Long-term stability with a well-established HVAC manufacturer WR HVAC | M&E are 1 recruitment partner for HVAC jobs. Our customers include a range of large and small M&E companies, manufacturers and suppliers of heating, ventilation, air conditioning and refrigeration equipment. We recruit UK wide for sales, management and technical jobs. WR is acting as an Employment Agency in relation to this vacancy.