Catalyst Air Pty Ltd. in Queensland is seeking experienced Air Conditioning and Refrigeration Mechanics to join our team for on-site service and repair of truck-mounted refrigeration units. This full time role focuses on preventive maintenance, diagnostics, and safe handling of refrigerants in a fast-paced environment. Join a client-based team delivering high-quality workmanship across residential, commercial, and industrial sectors, with opportunities to install fitouts and support road