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Commercial HVAC/R & Mechanical Systems Technician

Santa Ana, CA (OC-42)💼 Full-time💰 $54–$54🗓 2026-07-18 → 2026-07-31

Core

Assemble, install, troubleshoot, test, commission, and service heating, ventilation, air conditioning, and refrigeration systems for maritime vessels and production facilities.

Role type

HVAC/R & Mechanical Systems Technician

Builds

HVAC/R systems for maritime vessels and controlled-environment production facilities

Domain

Defense manufacturing / Maritime systems

Deliverable

physical/clinical work

Required skills

HVAC service in industrial/marine environments, refrigerant piping fabrication and brazing, EPA Section 608 certification, reading technical drawings and P&IDs, airflow and temperature/humidity measurement, OSHA safety practices (LOTO, confined space, fall protection)

Preferred skills

HVAC journeyman license, military MOS in HVAC/AC&R, AS9100/ISO 9001 environment experience, U.S. Navy or submarine HVAC experience, brazing/welding certifications (AWS), BAS/PLC controls experience, test and balancing experience

Technologies

BAS/PLC controls (Honeywell, Johnson Controls, Siemens), diagnostic tools

Responsibilities

Assemble and install equipment per engineering drawings; fabricate and install refrigerant piping; recover, recycle, evacuate, and charge refrigerant systems; conduct functional testing and tune completed systems; support facility HVAC installation and maintenance; maintain welding bay fume extraction and paint booth ventilation; monitor controlled-environment areas; troubleshoot mechanical, electrical, and control system faults

Seniority

Mid-level, hands-on IC

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