Together We Build – Partnership, Innovation, Excellence, and Safety At Kelso Industries, 3,500+ employees across 30 companies work together to deliver exceptional HVAC, mechanical, plumbing, refrigeration, and electrical solutions nationwide. Join us to grow your career, make an impact, and be part of a team where innovation, excellence, and safety come first. Recruiter Notice: We respectfully ask external recruiters and staffing agencies not to submit candidates.

We only accept direct applications. Position Summary: We are seeking a highly skilled Critical Environment 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.

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.

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.