Kelso Building Services
HVAC Commissioning Service Technician
Chattanooga, TN
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- Role family
- Skilled trades
- Seniority
- Mid level
- Country
- US
- Work mode
- On-site / unstated
- First seen by hirly
- 1 Oct 2026
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the posting
HVAC Service Technician – Commissioning & Start-Up
About the Role
We're looking for an experienced commercial HVAC Service Technician who does more than turn wrenches on service calls. In this role, you'll own the commissioning and start-up of commercial HVAC installations, making sure new equipment is set up right, runs to spec, and is handed over to the customer ready to perform. You'll work alongside our install crews, project managers, and controls team to take projects from mechanical completion to fully operational systems. If you take pride in getting it right the first time and like being the tech others lean on when new equipment fires up, this is your role.
What You'll Do
Lead start-up and commissioning of new commercial HVAC systems, including RTUs, split systems, VRF, chillers, boilers, AHUs, and exhaust and make-up air units
Verify installations meet manufacturer specifications, engineered drawings, and project requirements before start-up
Perform pre-functional checks and functional performance testing, and document results on start-up and commissioning forms
Set and verify refrigerant charge, airflow, gas pressures, combustion, and electrical readings
Coordinate with install crews, controls/BAS technicians, TAB contractors, GCs, and commissioning agents to schedule and complete start-up activities
Identify and correct installation deficiencies, and communicate punch list items clearly to project managers and foremen
Troubleshoot and resolve mechanical, electrical, and controls issues found during start-up
Walk customers and facility staff through system operation at turnover
Maintain accurate start-up reports, test data, and closeout documentation
Support the service department with diagnostic, repair, and preventative maintenance work between project start-ups
Follow all company and jobsite safety policies and model a safety-first approach in the field
Qualifications
Required:
5+ years of commercial HVAC experience
Hands-on experience starting up and commissioning new commercial HVAC equipment
Strong troubleshooting skills across refrigeration, electrical, gas heat, and controls
Ability to read and interpret mechanical drawings, schedules, wiring diagrams, and sequences of operation
EPA 608 Universal Certification
Valid driver's license and acceptable driving record
Strong communication skills and comfort working directly with GCs, owners, and inspectors
Own hand tools and working knowledge of test instruments (manifolds/digital gauges, combustion analyzers, meters, airflow instruments)
Preferred:
State or local HVAC/mechanical license
Chiller, boiler, or VRF manufacturer start-up certifications
Experience with BAS/DDC controls and front-end platforms
OSHA 10 or OSHA 30
Experience with commissioning software or electronic start-up documentation
Compensation & Benefits
Competitive hourly pay up to $42/hour based on experience
Medical, dental, and vision insurance
401(k) with company match
Paid time off and paid holidays
Company vehicle, fuel card, and phone
Ongoing training and manufacturer certification opportunities
Career growth into lead and supervisory roles
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