Air Conditioning Engineer Darlington 3 Local Sites (within 10-mile radius) Full-time, Permanent | £38,000 - £40,000 Callout We are seeking a skilled Air Conditioning Engineer to join our client's technical team on a large pharmaceutical site in the Darlington area. Working across up to three local facilities (all within a 10-mile radius), you'll be responsible for the maintenance, fault finding and repair of HVAC systems, ensuring a safe and compliant environment for critical operations. A daily pool vehicle is provided for site travel. Package & Benefits Salary: £38,000 - £40,000 per annum Hours: Monday - Friday | 8:00am - 5:00pm (40 hrs, 1 hour unpaid lunch) Callout: 1 in 4 rota £150 standby 4-hour minimum per call, paid at x1.5 or x2 25 days holiday bank holidays Free onsite parking Role Overview You'll be delivering both planned and reactive HVAC maintenance, supporting heating/cooling services across a highly regulated pharmaceutical environment. Strong diagnostic ability and a professional approach to compliance is essential. Key Responsibilities Conduct PPM and reactive maintenance on AC systems (split units, VRV/VRF) Perform mechanical fault finding and corrective repairs Ensure safe handling and management of refrigerants Carry out statutory and compliance checks for critical HVAC systems Work collaboratively with onsite facilities and engineering teams Maintain accurate records for audits and compliance reporting Attend nearby sister sites if required (pool vehicle provided) Experience & Qualifications Proven experience as an Air Conditioning / HVAC Engineer F-Gas Category 1 certification is essential Experience with VRV/VRF, FCUs, AHUs, chillers desirable Strong knowledge of building services and temperature control systems Excellent fault-finding and communication skills Full UK driving licence Ability to pass an Enhanced DBS check If you'd like to learn more about this opportunity, please send your updated CV to .