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HVAC Technician III

Reliant Critical Infrastructure
Tempe, AZ Full Time
POSTED ON 7/25/2026
AVAILABLE BEFORE 9/15/2026

Join a team dedicated to maintaining the highest standards of reliability and performance in mission-critical environments. As a Critical Systems Technician III, HVAC, based in Tempe, AZ, you will play a key role in ensuring the optimal operation of mechanical systems supporting data center operations. This position offers the opportunity to lead and mentor a team, work with advanced HVAC technologies, and contribute to the seamless functioning of essential infrastructure. The company values technical expertise, leadership, and a commitment to excellence in service delivery.

Responsibilities

  • Lead the installation, service, maintenance, and operation of mission-critical mechanical equipment in a data center environment.
  • Perform preventive maintenance, troubleshooting, and emergency repairs on a wide range of HVAC equipment, including air and water-cooled chillers, centrifugal and screw package chillers, natural gas boilers, unit heaters, electric duct heaters, cooling towers, and various water pumps.
  • Work with pneumatic, DDC, and variable frequency drive controls, as well as HVAC air distribution systems such as AHUs, FCUs, and fans.
  • Maintain, upgrade, and back up Building Automation Software as required.
  • Monitor compliance with contractual commitments and ensure all work meets quality and safety standards.
  • Provide guidance, leadership, and training to junior technicians, supporting their professional development.
  • Respond to after-hours and on-call assignments as needed to ensure continuous system operation.
  • Perform additional duties as assigned by the supervisor.
  • Maintain regular and reliable attendance.

Qualifications

  • High school diploma or GED required.
  • Completion of a basic air conditioning theory class.
  • Minimum of 7 years of large commercial HVAC service experience required; 8 years preferred.
  • Proficiency in the use of HVAC diagnostic tools and instruments.
  • Experience with DDC, pneumatic, and variable frequency drive controls.
  • Proficient in Microsoft Office or related software.
  • Environmental Protection Agency (EPA) Universal Certification required.
  • Current/active Arizona Journeyman HVAC license required.
  • OSHA Certification required.
  • Must be a U.S. citizen.
  • Ability to obtain security clearance preferred.
  • Ability to pass any required client background checks or training.

Offered compensation: $35/yr - $45/yr

Experience and License Requirements
  • 5 years of experience
  • AZ Journeyman HVAC license (optional)
  • Clean Background
  • Commercial HVAC
  • EPA Universal Certification
  • Travel 50%
  • US Citizen

Salary : $35 - $45

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