Job Ref: # 92701
Date Posted: 7/9/2026
Location: Abilene, Texas
Salary (USD): $26 - $40
Description
The Critical Systems Technician III, HVAC serves as the lead HVAC technician supporting mission-critical mechanical systems within data center environments. This role provides technical leadership, oversees maintenance activities, and performs advanced troubleshooting, repair, and preventive maintenance on complex commercial HVAC and building automation systems. The technician is responsible for ensuring maximum system reliability while mentoring junior technicians and supporting customer uptime requirements.
This position is ideal for experienced commercial HVAC professionals, military HVAC technicians, utilities specialists, or mission-critical facility technicians with strong troubleshooting skills and experience working on large commercial or industrial mechanical systems.
Must-Have Skills, Experience, and Education:
- High School Diploma or GED required.
- Minimum 7 years of commercial HVAC service experience (8+ years preferred).
- Successful completion of basic air conditioning theory coursework.
- Strong knowledge of HVAC diagnostic tools and testing equipment.
- Experience with:
- DDC controls
- Pneumatic controls
- Variable Frequency Drives (VFDs)
- EPA Universal Refrigerant Certification (required).
- OSHA Certification.
- U.S. Citizen required.
- Ability to satisfy customer background screening requirements.
- Proficient with Microsoft Office or similar software.
- Ability to lift up to 50 pounds and work safely in commercial mechanical environments.
Requirements:
- Perform advanced preventive maintenance, troubleshooting, repairs, and emergency service on mission-critical HVAC systems.
- Service and maintain:
- Air- and water-cooled reciprocating chillers
- Centrifugal and screw chillers
- Natural gas boilers and unit heaters
- Electric duct heaters
- Cooling towers
- HVAC air distribution systems (AHUs, FCUs, fans, etc.)
- Water pumps and associated mechanical equipment
- Troubleshoot DDC, pneumatic, and VFD control systems.
- Maintain, upgrade, and back up Building Automation System (BAS) software.
- Respond to after-hours service calls and participate in on-call rotation.
- Mentor and provide technical guidance to junior HVAC technicians.
- Complete assigned documentation and maintain regular attendance.
- Perform additional duties as assigned.
Nice-to-Have Skills, Experience, and Education:
- Active Journeyman HVAC License (job description references Virginia license).
- Ability to obtain a security clearance.
- Military HVAC, utilities, or facilities maintenance experience.
- Experience supporting mission-critical facilities or data centers.
- Strong commercial chiller and central plant experience.
- Experience with Building Automation Systems (BAS).
Job Posting
