Critical Systems Technician II, HVAC

Reliant Critical Infrastructure
Tempe, AZ

TITLE: Critical Systems Technician II, HVAC

LOCATION: Phoenix, AZ (Will require 50% Travel)

POSITION SUMMMARY: The Critical Systems Technician II, HVAC will work under minimum supervision, assist and gain experience in the operations, maintenance, and monitoring of the data center and supporting infrastructure.

ESSENTIAL DUTIES AND RESPONSIBILITIES: To perform this job successfully, an individual must be able to perform the following satisfactorily; other duties may be assigned. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
  • All responsibilities of HVAC Technician I.
  • Learn how to read and understand electrical schematics, blueprints, and shop drawings.
  • Assist with air and water balancing to conserve energy and maintain tenant comfort.
  • Gain experience from preventive maintenance, trouble diagnosis, routine and emergency maintenance and repairs with minimum direct supervision on HVAC equipment including but not limited to:
    • Air and water-cooled reciprocating chillers
    • Centrifugal and screw package chillers
    • Natural gas boilers and unit heaters
    • Electric duct heaters
    • Cooling Towers
    • Pneumatic, DDC and Variable Frequency Drive controls
    • HVAC air distribution systems, AHU’S, FCU’S, Fans and other devices used in air distribution.
    • Various types of water pumps used in the HVAC industry.

  • Perform other duties as assigned by supervisor.
  • Regular and reliable attendance is an essential job function.


QUALIFICATIONS: To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Education/Experience (Desired):
  • High School Diploma/GED required
  • Knowledge of refrigeration principles
  • Excellent knowledge of basic electricity for HVAC and HVAC diagnostic tools and instruments
  • Minimum of 3 years of commercial HVAC service experience required; 4 years preferred
  • MUST BE A US CITIZEN
  • ABLE TO OBTAIN SECURITY CLEARNACE PREFERRED


Computer Skills:

  • Proficient in Microsoft Office or related software.


Certificates and Licenses:

  • HVAC/R Servicing Certificate (preferred)
  • EPA refrigerant recovery certification Universal (preferred)
  • Clear and valid AZ driver’s license
  • Must be a US citizen (able obtain security clearance is preferred)

Posted 2026-05-04

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