Union Commercial HVAC Service Technician

We are seeking a driven Union Commercial HVAC Service Technician to support startup, commissioning, troubleshooting, and service of commercial HVAC systems across Minnesota and the Upper Midwest. This role plays a key part in ensuring systems are operating as intended while building strong, lasting relationships with contractors, owners, and manufacturer partners.

• Perform on-site equipment start-up and commissioning
• Troubleshoot HVAC systems and control installations
• Diagnose and resolve issues using logical problem-solving
• Coordinate with installing contractors and manufacturers to resolve system issues
• Support owner representatives in verifying proper system setup and performance
• Document all service activity and maintain detailed jobsite reports
• Communicate directly with building owners regarding system performance and maintenance needs
• Execute work under preventative maintenance agreements
• Collaborate with internal sales teams and service partners to deliver consistent, high-quality support

This role is designed for technicians who want to work on high-level commercial HVAC systems without the burnout of traditional emergency service work.

Most HVAC service roles come with the same tradeoffs — unpredictable hours, constant on-call rotation, and reacting to problems after they happen. This role is built differently.

Consistent, reliable hours — not feast-or-famine service work

Far fewer late nights and emergency calls than traditional roles

Support startup and commissioning — prevent problems instead of chasing them

Controls, sequences, and system performance — not just swapping parts

Get answers fast and solve problems the right way

• Associate's degree in HVAC or equivalent experience (5+ years preferred)
• Strong technical aptitude, including electrical and mechanical troubleshooting
• Experience with mechanical equipment and diagnosing control systems
• Self-starter with a high level of initiative and accountability
• Strong attention to detail with the ability to manage multiple priorities
• Excellent written and verbal communication skills
• Professional demeanor when interacting with customers, coworkers, and manufacturers
• Ability to work in fast-paced, active jobsite environments
• Local Union Membership required – Local 10, Local 539, Local 455

• Experience working with and troubleshooting advanced equipment attached to BMS systems
• Experience with applied equipment – Water cooled/Air Cooled chillers, modular chillers, heat pumps, VRF systems
• Refrigeration experience, Gas experience – with required certifications
• Experience working with operating room systems – fan filter units, HEPA OR ceiling systems etc.
• Dust collection system experience

• Ability to lift up to 50 lbs
• Comfortable working on roofs and in confined spaces
• Travel to customer job sites as required — within the Upper Midwest
• Valid driver's license with clean driving record

We offer a competitive compensation package and strong benefits, including:

• Manufacturer-sponsored training and professional development
• Paid time off
• Company provided vehicle
• Cell phone and laptop provided
• Referral bonus opportunities

TMS Johnson Service LLC is a partner with a leading manufacturer's representative in the commercial HVAC industry, partnering with top-tier manufacturers to deliver high-performance solutions across Minnesota and the Upper Midwest.

Our success is built on strong relationships, deep technical expertise, and a solutions-driven mindset. We take pride in supporting our customers, contractors, and engineers with reliable systems and responsive service.

Building long-term success by taking care of people and the manufacturers we represent.

Takes ownership, builds strong relationships, and follows through.

Uses expertise and discipline to help customers win.

Clear thinking. Creative solutions. Reliable outcomes.

TMS Johnson is proud to be an Equal Opportunity Employer.