HVAC Master Technician

About the role

Amentum is seeking an experienced HVAC Master Technician to support a critical U.S. Navy program on Diego Garcia. The role involves ensuring the reliable operation of large‑scale chilled water and direct‑expansion air‑conditioning plants in a remote, multi‑national environment.

Key responsibilities

• Perform maintenance, repair, and troubleshooting 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, testing, and preventive maintenance in accordance with regulatory standards.
• Document all inspections, test results, maintenance actions, and repairs.
• Supervise and provide technical guidance to team members, ensuring safe and efficient work practices.
• Ensure compliance with environmental safety regulations and proper refrigerant handling.

Required profile

• Valid U.S. HVAC Master License.
• Minimum five years of experience with chilled water and DX‑type air‑conditioning plant equipment.
• Completion of Refrigeration and Air‑Conditioning Servicing National Certification Level III (RAC NC III) or equivalent.
• High school diploma or equivalent.
• Valid passport with at least one year remaining and ability to pass contract medical requirements.

Required skills

• HVAC Master License
• Chilled water system maintenance
• Direct‑Expansion (DX) air‑conditioning plant expertise
• Variable Air Volume (VAV) system knowledge
• Constant Volume air distribution experience
• Refrigerant handling and environmental compliance
• RAC NC III certification