Mission Critical Master HVAC Technician

Kelso Building Services; Phoenix (AZ); On-site; USD 90,000 - 140,000; Full time

Job summary

Kelso Building Services is seeking a Mission Critical Master HVAC Technician to maintain, troubleshoot, repair, and optimize complex mechanical systems supporting 24/7/365 operations. The role demands expertise in critical cooling infrastructure and uptime in high-stakes environments.

You will read drawings, coordinate with electrical and controls teams, mentor junior technicians, and ensure compliance with OSHA, EPA, NFPA, ASHRAE safety standards.

Qualifications

• 10+ years of commercial or industrial HVAC experience
• 3+ years supporting mission-critical facilities or data centers
• Strong electrical troubleshooting skills up to 480V
• Ability to read blueprints, schematics, and sequence of operations
• Proficient with computerized maintenance management systems (CMMS)
• Strong written and verbal communication skills

Responsibilities

• Perform preventive, predictive, and corrective maintenance on mission-critical HVAC and mechanical systems.
• Diagnose and repair complex HVAC, refrigeration, and hydronic system issues with minimal downtime.
• Support commissioning activities for new mechanical installations and retrofits.
• Read and interpret mechanical drawings, P&IDs, sequence of operations, and control diagrams.
• Conduct root cause analysis (RCA) following equipment failures and recommend long-term corrective actions.
• Develop and execute Maintenance Operating Procedures (MOPs), Standard Operating Procedures (SOPs), and Emergency Operating Procedures (EOPs).
• Monitor equipment performance using Building Management Systems and trend data.
• Respond to emergency service calls while maintaining uptime requirements.
• Coordinate with electrical, controls, engineering, and operations teams during maintenance activities.
• Mentor junior technicians and provide technical leadership during complex repairs.
• Ensure all work complies with OSHA, EPA, NFPA, ASHRAE, and company safety standards.
• Maintain accurate maintenance records utilizing CMMS software.

Skills

Advanced HVAC Diagnostics

Refrigeration Systems

Mechanical Controls

BAS/BMS Programming & Monitoring

VFD Troubleshooting

Root Cause Analysis

Customer Service

Education

High School Diploma or GED

EPA Universal Refrigeration Certification

Tools

CMMS

BAS/BMS Platforms

Job description

Position Summary

We are seeking a highly skilled Mission Critical Master HVAC Technician to join our growing Critical Facilities team. This position is responsible for maintaining, troubleshooting, repairing, and optimizing complex mechanical systems that support mission‑critical facilities operating 24/7/365. The ideal candidate is a subject matter expert in critical cooling infrastructure and possesses extensive experience maintaining HVAC systems in environments where uptime, reliability, and safety are paramount. This individual will play a key role in ensuring continuous operation of mechanical systems while adhering to strict maintenance procedures, safety protocols, and customer service standards.

Key Responsibilities

• Perform preventive, predictive, and corrective maintenance on mission‑critical HVAC and mechanical systems.
• Diagnose and repair complex HVAC, refrigeration, and hydronic system issues with minimal downtime.
• Support commissioning activities for new mechanical installations and retrofits.
• Read and interpret mechanical drawings, P&IDs, sequence of operations, and control diagrams.
• Conduct root cause analysis (RCA) following equipment failures and recommend long‑term corrective actions.
• Develop and execute Maintenance Operating Procedures (MOPs), Standard Operating Procedures (SOPs), and Emergency Operating Procedures (EOPs).
• Monitor equipment performance using Building Management Systems and trend data.
• Respond to emergency service calls while maintaining uptime requirements.
• Coordinate with electrical, controls, engineering, and operations teams during maintenance activities.
• Mentor junior technicians and provide technical leadership during complex repairs.
• Ensure all work complies with OSHA, EPA, NFPA, ASHRAE, and company safety standards.
• Maintain accurate maintenance records utilizing CMMS software.
• Strictly adhere to customer and company safety and security protocols throughout the conduct of job responsibilities

Maintain And Troubleshoot

• Chilled Water Systems
• Air‑Cooled Chillers
• Water‑Cooled Chillers
• Cooling Towers
• Fluid Coolers
• CRAC Units
• CRAH Units
• In‑Row Cooling Systems
• Rear Door Heat Exchangers
• DX (Direct Expansion) Systems
• Pumps and Variable Frequency Drives (VFDs)
• Heat Exchangers
• Building Automation Systems (BAS/BMS)

Required Qualifications

• High School Diploma or GED (Technical Degree preferred)
• EPA Universal Refrigeration Certification
• Minimum 10+ years of commercial or industrial HVAC experience Preferred
• Minimum 3 years supporting mission‑critical facilities or data centers
• Strong electrical troubleshooting skills up to 480V (preferred)
• Experience working with redundant N+1 and 2N cooling systems
• Ability to read blueprints, schematics, and sequence of operations
• Proficient with computerized maintenance management systems (CMMS)
• Strong written and verbal communication skills
• Strong sense of customer service and proactive communication

Advanced Knowledge Of

• Mechanical refrigeration cycles
• Chilled water systems
• Psychrometric Properties
• Hydronic systems
• HVAC controls
• BAS/BMS platforms

Preferred Qualifications

• Journeyman or Master HVAC Certification
• HVAC Trade School Certification
• Experience supporting Tier III or Tier IV Data Centers
• Knowledge of ASHRAE Thermal Guidelines for Data Processing Environments
• Familiarity with server liquid cooling technologies, including direct-to-chip and liquid immersion cooling, is considered a plus.
• Experience with commissioning and retro‑commissioning
• OSHA 30 Certification
• NFPA 70E Training
• Experience working in live critical environments

Technical Skills

• Advanced HVAC Diagnostics
• Refrigeration Systems
• Mechanical Controls
• BAS/BMS Programming & Monitoring
• VFD Troubleshooting
• Pump Alignment
• Cooling Tower Maintenance
• Chiller Optimization
• Hydronic Balancing
• Root Cause Analysis
• Predictive Maintenance Technologies
• Infrared Thermography
• Vibration Analysis
• Energy Efficiency Optimization

Core Competencies

• Safety First Mindset
• Critical Thinking
• Problem Solving
• Customer Focus
• Team Leadership
• Strong Communication Skills
• Attention to Detail