HVAC Master Technician – US Navy Program

About the role

We are seeking an experienced HVAC Master Technician to join Amentum’s US Navy program on Diego Garcia. The role involves ensuring optimal performance of large‑scale chilled water and direct‑expansion air‑conditioning plants supporting critical operations.

Key responsibilities

• Perform maintenance, repair, and testing of chilled water and DX centralized air‑conditioning equipment.
• Support Variable Air Volume (VAV) and Constant Volume air‑distribution systems of 100 tons or greater.
• Conduct inspections, fault diagnosis, preventive maintenance, and documentation in line with regulatory standards.
• Troubleshoot and implement repairs to guarantee safe and efficient system operation.
• Assist in planning and scheduling HVAC maintenance activities.
• Provide technical guidance and supervision to team members.
• Ensure compliance with environmental safety regulations and proper refrigerant handling.

Required profile

• Valid U.S. HVAC Master License.
• Minimum five years’ experience with chilled water and DX‑type centralized HVAC systems.
• Completion of Refrigeration and Air‑Conditioning Servicing National Certification Level III (or equivalent).
• High school diploma or equivalent.
• Valid passport (minimum one‑year validity) and ability to travel internationally.
• Ability to pass contract medical requirements.

Required skills

• Chilled water system maintenance
• Direct‑expansion air‑conditioning plant servicing
• Variable Air Volume (VAV) and Constant Volume system support
• HVAC fault diagnosis and troubleshooting
• Preventive maintenance procedures
• Refrigerant handling and environmental compliance
• Technical documentation and reporting