VRF Commissioning and Controls Technician

About DMG (an Ambient Company)
DMG is a fast-growing sales and distribution leader for major HVAC manufacturers. With 150+ team members and offices serving Orange County, Los Angeles, and surrounding Southern California markets, we offer a collaborative, family-like environment, competitive pay, and a comprehensive benefits package.

Role Snapshot Picture your morning on a commercial job site in Los Angeles: you power up a new LG VRF system, review wiring diagrams, program the touchscreen controller, and coordinate with the installing contractor to fine-tune performance. By afternoon, you’re troubleshooting a Daikin control issue, connecting your laptop to verify BMS communications, documenting corrective actions, and submitting startup records for warranty activation.

That’s a typical day as our VRF Commissioning and Controls Technician.

What You’ll DoPerform skilled mechanical work for startup, repair, installation, preventive maintenance, and routine service of HVAC equipment.

Serve as the on‑site startup technician across multiple manufacturers.

Troubleshoot installation and operation of control systems, including commercial Daikin, Aaeon, and LG HVAC systems.

Program new control systems using touchscreens and computers.

Read and interpret HVAC wiring diagrams during diagnostics.

Communicate directly with the installing team to resolve issues using logic and sound reasoning.

Document actions taken on service reports; complete all startup documentation and submit for warranty processing.

Perform other duties and assignments as needed, and maintain regular, reliable attendance.

What You KnowHVAC trade practices and industry standards; HVAC and refrigeration system theory.

Materials, methods, and tools used in installation, operation, and repair of HVAC/R systems.

Electrical theory as applied to HVAC equipment and controls.

How to read and interpret manuals and technical documentation.

Brazing and soldering techniques.

Applicable health and safety regulations and basic record‑keeping.

Proper storage and handling of equipment, materials, and supplies.

Advanced Technical Strengths LG and AAON commercial HVAC systems and commercial packaged units.

VRF systems with expert‑level understanding of refrigerant properties.

HVAC controls systems and related troubleshooting.

Automated temperature control systems.

Mechanical, electrical, and hydronic systems used in commercial HVAC.Modern, computer‑based HVAC platforms; ability to navigate email, internet applications, basic office software, and computer networking.

BMS communication systems and functionality.

Ability to read and interpret HVAC wiring schematics.

Education & Experience High school diploma or G.E.D. certificate.

Two years of an HVAC training program.

Licenses & Certifications Valid California driver’s license.

Active EPA Universal Technician Certification.

Compensation & Benefits $40–$65 per hour DOE. We offer excellent health benefits, a 401(k) plan, Paid Time Off, Paid Holidays, and flexible scheduling.

Where You’ll Work Southern California, primarily across Orange County, Los Angeles, and nearby areas.

Our Broader Team Ambient is a collective of HVAC design and implementation experts, each entity esteemed in their respective regions, with decades of experience. Our experts merge craft with care, delivering safety, comfort, and highly efficient, sustainable solutions for spaces that matter most: healthcare, commercial, and residential. We have over 1k employees across the US and Canada.
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