Commercial HVAC Service Technician | AAON & LG Specialist

Ambient Enterprises; Orange (CA); On-site; USD 75,000 - 110,000; Full time

Job summary

Ambient Enterprises in California is seeking a skilled AAON & LG HVAC Service Technician to install, start-up, commission, troubleshoot, and maintain commercial HVAC equipment. You will work with customers, service management, controls personnel, contractors, and manufacturers to diagnose issues and ensure reliable operation.

The ideal candidate has 3+ years of field experience, reads electrical schematics, and can work independently while delivering high-quality service.

Qualifications

• 3+ years of commercial HVAC service experience preferred.
• Strong knowledge of commercial HVAC systems.
• Ability to read electrical schematics and wiring diagrams.
• Strong mechanical and electrical troubleshooting skills.
• Knowledge of refrigeration fundamentals.
• Ability to use electrical and HVAC diagnostic instruments.
• Valid driver's license and acceptable driving record.
• Ability to work independently and manage multiple service calls.
• Strong written and verbal communication skills.
• Ability to work safely in commercial and industrial environments.

Responsibilities

• Diagnose and repair commercial HVAC equipment, including AAON packaged rooftop units, AAON air-handling equipment, LG VRF systems, LG heat-pump and heat-recovery systems, DX and refrigeration systems, and hydronic heating and cooling systems.
• Troubleshoot electrical, mechanical, refrigeration, and controls issues. Identify root causes rather than simply correcting symptoms. Perform system testing and verify proper operation after repairs.
• Perform factory start-up and commissioning of AAON and LG equipment. Verify refrigerant charge, airflow, temperatures, pressures, electrical characteristics, safeties, and operating sequences.
• Complete scheduled preventive maintenance on commercial HVAC equipment. Inspect coils, filters, belts, bearings, motors, compressors, electrical components, dampers, economizers, and refrigeration systems.
• Communicate professionally with customers, facility managers, contractors, and other trades. Explain equipment problems and recommended repairs in a clear, understandable manner.
• Complete accurate field service reports for every service visit. Document equipment condition, troubleshooting performed, readings, repairs, and recommendations.

Skills

HVAC troubleshooting

Electrical schematics

Commercial HVAC

Customer communication

Independent work

Driver's license

Tools

Electrical diagnostic tools

Job description

Ambient Enterprises in California is seeking a skilled AAON & LG HVAC Service Technician to install, start-up, commission, troubleshoot, and maintain commercial HVAC equipment. You will work with customers, service management, controls personnel, contractors, and manufacturers to diagnose issues and ensure reliable operation.

The ideal candidate has 3+ years of field experience, reads electrical schematics, and can work independently while delivering high-quality service.