VRF & Rooftop HVAC Commissioning Specialist

Ambient Enterprises; Orange (CA); On-site; USD 65,000 - 95,000; Full time

Job summary

DMG is seeking a Commercial HVAC VRF Commissioning Specialist to perform installation, start-up, commissioning, maintenance, and repair of AAON and LG systems on customer sites. The role covers electrical, mechanical, refrigeration, and controls, with hands-on work on rooftop units and VRF systems.

You will verify installations, document results, and coordinate with controls technicians for BMS integration, while providing clear service reports and recommendations.

Qualifications

• 3+ years of commercial HVAC service experience.
• Fluency in reading electrical schematics and wiring diagrams.
• Proven mechanical and electrical troubleshooting capability; adept with diagnostic instruments.
• Valid driver’s license with an acceptable driving record.

Responsibilities

• Install, support, start-up, commissioning, maintenance, and repair of commercial HVAC equipment with focus on AAON and LG platforms.
• Troubleshoot across electrical, mechanical, refrigeration, and controls domains.
• Coordinate with controls personnel for BMS integration and testing; assist with BAS-connected equipment.
• Deliver field service reports with conditions, diagnostics, readings, repairs, and part numbers.

Skills

HVAC troubleshooting

Electrical schematics

Commissioning start-up

Field service

Communication

Tools

Diagnostic instruments

Job description

DMG is seeking a Commercial HVAC VRF Commissioning Specialist to perform installation, start-up, commissioning, maintenance, and repair of AAON and LG systems on customer sites. The role covers electrical, mechanical, refrigeration, and controls, with hands-on work on rooftop units and VRF systems.

You will verify installations, document results, and coordinate with controls technicians for BMS integration, while providing clear service reports and recommendations.