Senior VRF/VRV HVAC Technician

ACIS; Allen (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

ACIS is seeking an experienced HVAC Technician II to maintain, troubleshoot, and repair VRF/VRV systems in commercial facilities across California. You will diagnose complex faults, perform advanced repairs, and conduct preventive maintenance while reading detailed wiring diagrams and coordinating with service teams.

You must have 6–10+ years of hands-on experience, EPA refrigerant certification, and manufacturer-specific training (Daikin, Mitsubishi Electric, LG, or equivalent).

Qualifications

• 6-10+ years of hands-on commercial HVAC experience servicing and maintaining VRF/VRV systems.
• EPA Universal Refrigerant Certification and a valid driver’s license.
• Manufacturer-specific training or certifications (Daikin, Mitsubishi Electric, LG, or similar).
• Advanced ability to read electrical wiring diagrams, blueprints, schematics, and control sequences.
• Strong knowledge of BAS, DDC, and HVAC controls integration.

Responsibilities

• Diagnose and troubleshoot complex mechanical and electrical HVAC faults including refrigerant circuits, variable-speed compressors, EEVs, sensors, controls and communication systems.
• Perform advanced troubleshooting and repairs on VRF/VRV systems, identifying root causes and implementing corrective actions.
• Conduct preventive maintenance, inspections, performance testing, and operational checks for reliable operation.
• Test and verify control logic, sensors, networks, and BAS/DDC integration.
• Adjust and optimize system performance for energy efficiency, comfort, reliability and equipment life.
• Read and interpret detailed electrical schematics, wiring diagrams, piping diagrams, and manufacturer documentation.
• Maintain accurate service records, diagnostic findings, repair documentation and equipment history.
• Clearly communicate technical findings and recommended repairs to customers and internal teams.
• Work safely and professionally, demonstrating craftsmanship and customer service.
• Coordinate daily schedule with Service Coordinator and maintain company tools.
• Complete timecards, service activities, and inspection reports.
• Collaborate with team members to proactively develop solutions to client problems.

Skills

VRF/VRV troubleshooting

Electrical diagram reading

Control systems understanding

Safety and workmanship

Customer communication

Team collaboration

Tools

Hand tools: gauges, meter, screwdrivers, pliers

Job description

ACIS is seeking an experienced HVAC Technician II to maintain, troubleshoot, and repair VRF/VRV systems in commercial facilities across California. You will diagnose complex faults, perform advanced repairs, and conduct preventive maintenance while reading detailed wiring diagrams and coordinating with service teams.

You must have 6–10+ years of hands-on experience, EPA refrigerant certification, and manufacturer-specific training (Daikin, Mitsubishi Electric, LG, or equivalent).