Commercial HVAC Technician

Job Description

Job Description

VRF Commercial HVAC Technician – Job Description Overview

A VRF (Variable Refrigerant Flow) Commercial HVAC Technician installs, maintains, and repairs advanced VRF/VRV heating and cooling systems in commercial buildings. This role requires strong technical expertise, the ability to interpret complex system designs, and a commitment to delivering reliable climate‑control solutions for large facilities.

• Install VRF/VRV systems including outdoor units, indoor fan coils, branch selector boxes, refrigerant piping, and controls.

• Perform diagnostics and troubleshooting on multi‑zone VRF systems from manufacturers such as Carrier, Daikin, Mitsubishi, LG, Samsung, and Fujitsu.

• Conduct routine maintenance including leak checks, coil cleaning, electrical inspections, and system performance testing.

• Read and interpret blueprints, wiring diagrams, and manufacturer specifications for complex commercial HVAC layouts.

• Commission new systems by configuring controls, verifying refrigerant charge, balancing airflow, and ensuring proper system communication.

• Repair or replace components such as compressors, expansion valves, sensors, motors, and control boards.

• Document all work performed including service reports, maintenance logs, and equipment performance data.

• Collaborate with project managers, engineers, and building owners to ensure system performance meets design intent.

• Follow safety protocols related to refrigerants, electrical systems, and commercial job sites.

• Strong knowledge of VRF/VRV technology , refrigerant flow principles, and multi‑zone system operation.

• Proficiency with refrigeration tools , vacuum pumps, recovery machines, digital gauges, and diagnostic software.

• Ability to diagnose electrical and communication issues in networked HVAC systems.

• Experience with BACnet, Modbus, or proprietary control platforms is a plus.

• EPA Section 608 Certification (required).

• HVAC technical school training or equivalent field experience.

• Ability to lift heavy equipment, work on ladders, and operate in commercial construction environments.

• Strong communication and customer‑service skills.

• Commercial buildings (offices, hospitals, schools, retail, data centers)

• New construction and retrofit projects

• Indoor and outdoor work in varying weather conditions

• Collaboration with electricians, plumbers, and general contractors

• 3+ years working with VRF systems

• Manufacturer‑specific training (Carrier,Daikin, Mitsubishi City Multi, LG Multi‑V, etc.)

• Experience commissioning large multi‑zone systems

• Familiarity with building automation systems (BAS)