Commercial Air Conditioning & Ventilation Engineer Location: Mobile role covering London & Home Counties Hours: 40 hours per week (overtime available) Salary: £38,000 - £42,000 depending on experience - with travel paid door-to-door + overtime at 1.5x, Sunday and evening work at 2x The Opportunity An established and reputable mechanical services company is looking for an experienced Commercial Air Conditioning & Ventilation Engineer to join its growing operations team. This is a mobile role where no two days are the same: you’ll work across a variety of commercial sites, from office spaces and leisure centres to healthcare and education facilities with plenty of work to fill your week. You’ll be responsible for carrying out planned maintenance, fault finding, and reactive repairs on a wide range of HVAC systems. You’ll also be the professional face of the company on-site, so customer service and communication skills are just as important as your technical expertise. What You’ll Be Doing * Performing planned preventative maintenance on air conditioning and ventilation systems (including AHUs) * Diagnosing and repairing system faults and failures * Pressure testing and recharging refrigerant circuits in line with F-Gas regulations * Replacing defective components and carrying out upgrades where necessary * Checking and adjusting system control parameters (basic BMS knowledge r...