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Chiller Apprentice Jobs in California (NOW HIRING)

EMCOR Group Inc

Mesa Energy Systems, Inc.

Fresno, CA

$29.31 - $56.18/hr

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation ... Must have completed 4-year apprenticeship program or technical schooling * Must have 5+ years of ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Irvine, CA

$31.32 - $65.49/hr

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation ... Must have completed 4-year apprenticeship program or technical schooling * Must have 5+ years of ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Santa Ana, CA

$31.32 - $56.95/hr

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation ... Must have completed 4-year apprenticeship program or technical schooling * Must have 5+ years of ...

EMCOR Group Inc

Mesa Energy Systems, Inc.

Los Angeles, CA

$31.32 - $56.95/hr

We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation ... Must have completed 4-year apprenticeship program or technical schooling * Must have 5+ years of ...

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Chiller Apprentice information

What is the difference between Chiller Apprentice vs HVAC Technician?

AspectChiller ApprenticeHVAC Technician
CertificationsBasic HVAC or chiller-specific training, apprenticeshipsEPA Certification, HVAC licenses
Work EnvironmentCooling systems, industrial or commercial settingsResidential, commercial, industrial systems
Job FocusLearning chiller operation and maintenanceInstalling, repairing, maintaining HVAC systems

The Chiller Apprentice primarily focuses on learning to operate and maintain chillers in industrial or commercial environments, often as part of an apprenticeship program. An HVAC Technician has a broader scope, working on various heating, ventilation, and air conditioning systems, including chillers. Both roles require foundational HVAC knowledge and certifications, but the Chiller Apprentice is more specialized in chillers during training stages.

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Infographic showing various Chiller Apprentice job openings in California as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Apprentice Engineer (Local 501) - Irvine, CA

UG2

Irvine, CA • On-site

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

We are seeking a motivated and hands-on Local 501Apprentice Engineer to support the daily operations of Data Center. This position works closely with the Chief Engineer and Journeyman Engineer to ensure all building systems operate safely, efficiently, and reliably.

The ideal candidate is eager to grow within commercial building operations and develop advanced engineering skills while gaining practical, hands-on experience.

Key Responsibilities

  • Assist with the day-to-day maintenance of mechanical, electrical, plumbing, and HVAC/R systems
  • Perform preventive maintenance and necessary repairs on building equipment
  • Monitor and ensure proper daily operation of HVAC/R systems
  • Replace air filters, adjust and replace belts, lubricate bearings, and repair motors and capacitors
  • Clean cooling towers and punch/clean chiller tubes
  • Conduct water treatment testing and evaluations
  • Service restroom plumbing systems, including snaking and augering drains
  • Generate and rekey building keys using the Schlage key system
  • Complete minor drywall repairs and painting
  • Communicate equipment issues and operational concerns to the Chief Engineer
  • Maintain a clean and safe working environment

Qualifications

  • Must have already taken and passed the Local 501 Apprentice test
  • EPA 608 Universal Certification (required)
  • Working knowledge of HVAC/R systems
  • Experience with Energy Management Systems (EMS)
  • Basic plumbing and carpentry skills
  • Ability to troubleshoot mechanical and electrical equipment
  • Strong attention to detail and commitment to safety
  • Basic computer proficiency

Preferred Experience

  • Experience in commercial building operations
  • Exposure to preventive maintenance programs
  • Familiarity with cooling towers, chillers, and water treatment processes

What We Offer

  • Hands-on training and mentorship
  • Growth opportunities within building engineering
  • Professional development in commercial facility operations
  • Competitive compensation and benefits

About UG2:

At UG2, a leader in facility services, we are committed to innovation, excellence, and client satisfaction. We are committed to developing the strongest customer relationships and the highest service delivery benchmarks in the marketplace.

Founded in 2012, UG2 is privately held and headquartered in Boston, Massachusetts. We also have regional offices in Chicago, Washington, D.C., New York City, West Palm Beach, Los Angeles, Sunnyvale, and Dallas.

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