HVAC Commercial Start-up Technician

About Comfort Systems USA Mid South: Comfort Systems USA Mid South is a leading mechanical services company specializing in heating, ventilation, air conditioning, and plumbing services for commercial, industrial, and institutional clients. With a focus on safety, quality, and innovation, we integrate planning, engineering, and implementation processes to meet the complex needs of our customers. Our team is dedicated to delivering high-performance mechanical systems and services while fostering long-term relationships with our clients through collaborative and cost-effective solutions. Position Description: The HVAC Start-Up Technician will play a critical role in supporting commercial construction projects by conducting pre-functional inspections, system start-ups, diagnostics, and warranty-period service on commercial HVAC equipment. This role requires advanced technical knowledge of chillers, boilers, air handlers, VRF systems, refrigeration components, and HVAC control sequences. The HVAC Start-Up Technician will review equipment submittals, interpret wiring diagrams, follow manufacturer installation and start-up procedures, and ensure systems are properly commissioned. Responsibilities also include completing detailed documentation, troubleshooting issues, assisting installation teams, and working closely with commissioning agents to ensure all systems perform as designed. This is an excellent opportunity for a skilled technician who values precision, quality, and professional growth within a respected and stable organization. Requirements: Minimum of four (4) years of experience in commercial HVAC equipment installation and start-up Strong understanding of HVAC system operations, refrigeration circuits, and equipment sequence of operations Ability to read and interpret wiring diagrams, electrical schematics, blueprints, submittals, and manufacturer manuals Proficiency with Microsoft Office and/or iPad-based field reporting tools Strong communication and customer service skills Ability to troubleshoot complex mechanical, electrical, and control-related issues VRF installation and start-up experience preferred Strong organizational and documentation skills Commitment to safety and adherence to company policies and procedures Key Responsibilities: Leadership: Support field operations by ensuring proper execution of start-up procedures and accurate documentation for all assigned HVAC systems. Technical Start-Up & Field Operations: Perform pre-functional inspections and complete start-up checklists for chillers, boilers, air handlers, VRF units, split systems, and other commercial HVAC equipment Conduct diagnostics and make necessary repairs on refrigeration systems during start-up and warranty periods Interpret control schematics, high-voltage wiring diagrams, and manufacturer-provided installation documentation Assist installation teams in preparing field-installed devices and components prior to start-up Troubleshoot equipment performance, controls issues, and operational deficiencies Work closely with commissioning agents and complete all commissioning documentation Document inspection results, start-up data, identified issues, and corrective actions Reporting: Provide accurate and timely start-up reports and equipment documentation to project managers, commissioning teams, and internal stakeholders. Compliance: Follow and enforce all company safety procedures Ensure all start-up activities meet project specifications, manufacturer requirements, and commissioning standards Maintain organized, accurate documentation for all systems and field activities We Are Proud to Offer Our Team Members: Competitive pay and incentives Medical, Vision, and Dental insurance Paid holidays and flexible, generous PTO - 2 weeks after 90 days, with the opportunity to gain up to 5 weeks 401(k) Plan with multiple investment options Training and Development Programs Company-paid Employee Assistance Program Employee discount programs Company-paid and voluntary life insurance Company-paid and voluntary accidental death & dismemberment (AD&D) Company-paid short-term disability and voluntary long-term disability Healthcare reimbursement account and dependent care reimbursement account Health savings account with company contributions Vehicle discount purchase programs Disclaimer: The above statements are intended to describe the general nature and level of work being performed by employees assigned to this job. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of employees assigned to this job. All personnel may be required to perform duties outside of their normal responsibilities from time to time, as needed. Comfort Systems USA, Inc. and all subsidiaries, is an equal opportunity employer in all aspects of employment and prohibits discrimination and harassment of any type to all individuals regardless of race, color, religion, sex, national origin, age, disability, veteran status, genetic information, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

Created: 2026-03-04