Air Conditioning & Ventilation Service Engineer Commercial Essex / Home Counties / Central London We re looking for an experienced Air Conditioning and Ventilation Service Engineer to join our commercial team, specialising in fault-finding, diagnostics and technical support across a range of HVAC systems. This is a service-focused role suited to an engineer who enjoys problem-solving, commissioning support, and getting systems up and running correctly, rather than routine maintenance or full installations. Systems worked on: Air conditioning systems (splits, VRF) AHUs and ventilation plant Chillers and ASHPs Versatemp units and associated controls Supporting breakdowns and complex faults The role: Diagnosing and repairing HVAC faults Attending breakdowns and technical call-outs Supporting commissioning and system optimisation Liaising with clients and internal teams Producing clear service reports What we offer: £20 £26 per hour basic Paid door-to-door travel Strong overtime availability Company van with personal use Manufacturer and specialist training What we re looking for: Strong HVAC service and fault-finding experience Full F-Gas qualification Commercial building experience Confident, professional client-facing manner This is a long-term employed role with progression for the right engineer. Job Type: Full-time Pay: £20.00-£26.00 per hour Expected hours: No less than 40 per week Benefits: Company pension On-site gym On-site parking Work Location: In person