Commercial Air Conditioning & Ventilation Engineer Location: Mobile role covering London & the Home Counties Hours: 40 hours per week (overtime available) Salary: Competitive, depending on experience – includes paid travel door-to-door enhanced overtime rates The Opportunity Are you an experienced HVAC professional looking to join a company where your skills are valued and your career can grow? We’re a well-established and reputable mechanical services provider seeking a Commercial Air Conditioning & Ventilation Engineer to become a key part of our expanding team. This is a varied mobile role – no two days are the same. You’ll be working across a diverse range of commercial sites, including office spaces, leisure centres, healthcare, and education facilities, ensuring a full and rewarding workload each week. You’ll take the lead on planned maintenance, fault-finding, and reactive repairs on a wide range of HVAC systems, all while representing the business with professionalism and pride. What You’ll Be Doing * Carrying out 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 needed * Checking and adjusting system controls (basic BMS knowledge required) * Documenting all work via a mobile field system * Providing clear updates and excellent customer service on-site * Taking part in an on-call rota for out-of-hours support What We’re Looking For We want someone who brings technical expertise with a customer-first mindset: * Qualified HVAC engineer with proven commercial experience * Excellent communication and customer service skills * Strong attention to detail and pride in high safety standards * Experience in both planned and reactive maintenance * A proactive team player with the drive to deliver quality work Requirements * City & Guilds 2079 F-Gas Cat 1 (mandatory) * NVQ Level 2 or 3 in Refrigeration & Air Conditioning (or equivalent) * Full UK driving licence * CSCS card (or willingness to obtain) Additional certifications such as IPAF and PASMA are highly desirable. Benefits We believe in rewarding our engineers for their skills, dedication, and hard work. You can expect: * Paid travel door-to-door * Overtime at enhanced rates – 1.5x hourly rate, 2x on Sundays & evenings * Career development – ongoing training, including manufacturer courses * Regular reviews every 6 months, with a focus on growth & progression * A supportive team culture with recognition through Employee of the Month awards * 23 days holiday plus 8 bank holidays * A competitive salary package and plenty of opportunities to boost your earnings