Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, we're joined by Refrigeration Mentor Community Ambassador Andrew Freeburg to discuss how technicians can approach CO2 refrigeration with more confidence, reduce callbacks, and cut troubleshooting time with the right training and mentors. Andrew shares his journey in the trade, including push into CO2, emphasizing persistence, ongoing training, and being vocal with management about career goals. We also cover practical startup and commissioning fundamentals, including using P&IDs, wiring diagrams, I/O schedules, and checklists to identify components. In this episode, we discuss: (01:51) Andrew's CO2 Journey (03:5)1 Learning CO2 Refrigeration Faster (05:13) Refrigeration Startup Checklists (05:44) Sensor Install Best Practices (07:29) Advice for New Techs on CO2 (12:53) Commissioning and VFD Tuning (15:32) Why Ongoing Commissioning Matters (18:13) CO2 Monitoring and Troubleshooting Helpful Links & Resources: Episode 243. Step-By-Step Walkthrough of a CO2 Service Call with Patrick Gregory Episode 227. Getting to Know Transcritical CO2 Supermarket Refrigeration Systems with Kevin Mullis Episode 180: Developing your CO2 Knowledge into Experience

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