The Refrigeration Mentor Podcast

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 talking with Rob Ochs of Recold to unpack his long and successful refrigeration career - from rack refrigeration, to global sales and adiabatic coolers. He shrares practical tips for technicians and engineers working with modern systems, including CO2. Rob also covers career lessons, communication advice and troubleshooting tips for technicians to help reduce callbacks and make smarter equipment decisions. This episode was recorded live at the 2026 AHR Expo. (0:40) Rob Ochs' Career Path (2:09) Navigating Career Transitions in Refrigeration (5:49) Why Refrigeration Techs Should Learn Design (10:29) Condenser and Gas Cooler Sizing 101 (14:34) Nameplates, Rack Summaries, and Finding Mismatches (20:17) Critical Charge vs DX (22:52) Finding Mentors (24:06) Condenser Fan Strategies (29:11) Latent Gas Defrost Explained (33:36) Adiabatic vs Air Gas Coolers (39:44) Pad Efficiency and Seasonal Pad Removal Helpful Links & Resources: Follow Robert on LinkedIn Recold AHR Expo Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 271. The Inspiring Refrigeration Journey of Robert Ochs

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 talking about commercial refrigeration trends and technician realities in the UK/Europe versus North America with UK-based Refrigeration Consultant, Brian Churchyard. We cover the transition to CO2 transcritical, as well as skilled-trades shortages, wage and workload pressures, and the need for continual upskilling across service, maintenance, design, installation, and commissioning sectors of refrigeration. Brian also shares some hands-on fundamentals and things for new technicians to be excited about. This episode was recorded live at the 2026 AHR Expo. In this episode, we discuss: (0:51) Brian's Journey: From Service Engineer to Supermarket Head of Engineering (3:30) Refrigeration Trends in Europe (6:01) A2L Safety, Flammability Context & Design Risk Mitigation (10:48) Upskilling for the Low-Carbon Transition (11:24) The Skilled Trades Shortage (14:55) Pay, Workload & Market Pressures (17:03) Attracting New Refrigeration Professionals (18:54) Building Strong Refrigeration Techs Faster (20:06) Customer Relationships and Clear Communication (22:54) Refrigeration Controls (23:33) Omega Solutions Now Data (31:08) Refrigeration Industry Outlook (34:27) Advice for New Refrigeration Technicians Helpful Links & Resources: Omega Solutions Now Data Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4)

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 UK-based Refrigeration Consultant Steve Gill to talk about the refrigeration industry's impact around the world - enabling travel, preserving food, vaccines, medicines, supporting data centers and more. Steve started World Refrigeration Day (June 26) in 2019 and makes a special announcement about the 2026 theme on this episode - listen to find out! We also discuss practical outreach ideas to help promote and grow the refrigeration industry around the world. This episode was recorded live at the 2026 AHR Expo. In this episode, we discuss: (1:31) Steve's Refrigeration Journey: From Tools to Global Consulting (3:05) Promoting Refrigeration to Students (5:51) Origin of World Refrigeration Day (14:09) Outreach Ideas for the Refrigeration Industry (16:49) Announcing the 2026 World Refrigeration Day Theme (17:42) What "Cool Intelligence" Really Means in Refrigeration (21:26) Support & Sponsorshipfor World Refrigeration Day (23:19) AI in Refrigeration (26:17) Training & Mentorshipin Refrigeration Helpful Links & Resources: https://worldrefrigerationday.org/ https://www.ahrexpo.com/ Episode 320. Celebrating World Refrigeration Day Episode 324. Using AI To Learn and Troubleshoot Refrigeration Systems

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about installation prep for CO2 refrigeration. I'm joined by longtime refrigeration technician and Refrigeration Mentor Community Ambassador Andrew Freeburg to discuss CO2 system installation, design, evacuation, and pressure testing, diving into best practices and common challenges. This episode provides valuable tips for refrigeration technicians looking to expand their knowledge and expertise in handling CO2 systems. This episode was recorded live during one of our regular Refrigeration Mentor Community Meetups. Join the next meetup here. In this episode, we cover: (1:37) Dealing with Pain and Injuries on the Job (8:06) Training Apprentices Effectively (16:33) Insights from the HR Show (17:50) CO2 System Design and Installation (34:24) Understanding Pressure Ratings and Conversions (35:40) Installation Prep for CO2 Systems (36:24) Proper Support and Slope for Piping (38:15) Brazing and Nitrogen Purging (38:48) Setting Cases and Proper Installation Practices (40:06) Following Manufacturer Specifications (41:57) Expansion Loops and Traps (51:42) Pressure Testing Procedures (57:29) Triple Evacuation and Deep Vacuum Helpful Links & Resources: Episode 160: Things to Know When Installing and Servicing CO2 Refrigeration Systems Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg Episode 81. Challenges Faced When Installing CO2 Systems

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking with technician Aidan Lucey about neurodiversity in the refrigeration industry - discussing ADHD (attention-deficit/hyperactivity disorder) and its prevalence among technicians. Aiden, a Refrigeration Mentor Community Ambassador, shares personal experiences with hyperfocus, recognizing neurodiverse traits in himself and others, and how it impacts technicians' job performance and mental health. We also cover the importance of setting boundaries, the benefits of exercise, and effective communication within teams when it comes to balancing neurodiversity and a healthy, thriving work life. In this episode, we cover: (0:19) Neurodiversity and ADHD in Refrigeration (0:47) Aidan's Personal Experiences with ADHD (7:13) Impact of Neurodiversity on Relationships and Communication (10:33) Mentoring and Empathy in the The Trades (14:58) Challenges and Mindset Shifts Regarding ADHD and Neurodiversity (17:54) Generational Differences in the Workforce (18:40) Neurodiversity and ADHD Career Success Stories (21:13) Maximizing Earnings and Career Growth In The Trades (25:03) Importance of Electrical Knowledge (27:54) Patience and Problem-Solving In The Skilled Trades Helpful Links & Resources Episode 167: Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical Episode 125: Next Generation Leadership and Management for HVACR Professionals w/ James Bailey

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, you'll learn important electrical troubleshooting techniques that help you stop guessing and start proving in diagnosing electrical issues in refrigeration systems. We'll explain the significance of understanding power and control circuits, how to effectively read diagrams, and the essential measurement techniques across components. We also cover common issues like block power and failed loads, and discover a six-step repeatable method for efficient troubleshooting. This episode is packed with valuable tips for technicians to better understand refrigeration electrical systems and feel more confident on service calls. In this episode, we discuss: (0:37) Understanding Circuits in Refrigeration Systems (1:57) Diagnosing Refrigeration Electrical Problems (2:27) Effective Troubleshooting Techniques (5:00) Reading and Interpreting Electrical Wiring Diagrams (9:26) Common Mistakes and Misunderstandings (10:52) Six-Step Troubleshooting Process Helpful Links & Resources: Episode 323. Electrical Troubleshooting 101 Episode 305. CO2 Experts: Electrical Troubleshooting Episode 296. Electrical Troubleshooting in Refrigeration

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking with Billy Carlson of Carlson Heating and Air Conditioning about his personal story and career path. Billy shares his experience and reflections on the refrigeration industry, including tips for training new technicians. We cover key topics such as the challenges of rack refrigeration, the transition to CO2 systems, the importance of manufacturer support, and the dynamics of training technicians. We also discuss practical aspects like handling dry ice, system startups, and the impact of new technologies like ejectors. This episode was recorded live at the 2026 HVAC/R Training Symposium. In this conversation, we cover: (0:20) Billy Carlson's Journey in Refrigeration (1:56) Challenges and Learning in Supermarket Refrigeration (2:54) Transitioning to CO2 Refrigeration Systems (12:26) Training and Mentorship in Refrigeration (18:55) E2 Settings (19:49) Trend Graphs and CO2 Refrigeration Systems (21:09) Cold Weather Challenges (22:47) Insulation and Roof Design (28:22) Advice for New Refrigeration Technicians Helpful Links & Resources: HVAC/R Training Symposium Episode 72. Why You Need To Head To Events Like The HVACR Training Symposium Episode 237. Tips for New Technicians Getting Into Supermarket Refrigeration with Aidan Lucey Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about the critical mindset shift required for working with CO2 refrigeration systems. This is especially important for technicians with apprehensions transitioning from HFC systems, to help you become more confident working with CO2 refrigeration systems. This episode covers handling high-pressure environments, essential tools, and practical advice that will help all refrigeration technicians become experts in CO2 refrigeration. The more you understand the fundamentals of CO2 refrigeration, how to prioritize safety, and learn to navigate the complexities of CO2 systems, the more you'll embrace the growing prominence and extraordinary benefits of CO2 refrigeration. In this episode, we discuss: (0:06) The CO2 Refrigeration Mindset Shift (0:54) Challenges and Safety in CO2 Refrigeration Systems (4:24) Efficiency and Environmental Impact of CO2 (6:25) Understanding Superheat and Tools for CO2 (9:34) Fundamentals and Training for CO2 Refrigeration (11:34) CO2 Refrigeration Troubleshooting Tips (14:18) The Importance of Continuous Learning In The Trades Helpful Links & Resources: Episode 312. CO2 Experts: Basic Terminology & Keywords Episode 283. CO2 Experts: The Shift from HFCs to CO2 - Lessons Challenges and Solutions with Conor Eaton-Smith Episode 201. Removing the Fear of CO2 Refrigeration with Andrew Freeburg

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're going into the fundamentals of electrical troubleshooting for refrigeration systems. Building a solid foundation in electrical work will help technicians succeed in the field and troubleshoot far more efficiently. I'll share a repeatable six-step process to tackle electrical issues which will help you better understand the logic behind wiring diagrams - which will completely reframe how you tackle electrical issues out on your service calls. In this episode, we cover: (3:34) Understanding Refrigeration Electrical Components (5:07) 6-Step Electrical Troubleshooting Process (9:21) Importance of Ground Troubleshooting (11:40) Refrigeration industry Events Helpful Links & Resources: Episode 323. Electrical Troubleshooting 101 Episode 296. Electrical Troubleshooting in Refrigeration Episode 12. You Need To Know About Refrigeration Compressor Electrical Issues AHR Expo

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're walking you through how refrigeration technicians can transition into leadership roles with Ben Boyer of The Arcticom Group. Ben covers the mindset shifts, skills development, and practical steps necessary for career advancement and shares personal anecdotes and essential advice on building confidence, conscious leadership, handling emotional responses, and continuous learning. This episode is packed with guidance and inspiration for any refrigeration technician looking to advance into a management or leadership role. In this episode, we discuss: (1:36) How to transitioning to a leadership roles (5:12) Handling emotions in leadership (9:49) How to ask for a promotion (20:43) Overcoming fear of public speaking (26:09) Personal development for tradespeople (36:37) How to build relationships with dispatch Helpful Links & Resources: Episode 286. Leadership Training for Technicians with Jim Pape of The Arcticom Group Episode 125: Next Generation Leadership and Management for HVACR Professionals w/ James Bailey Episode 187: Making The Leap From Technician To Service Manager - Learning Leadership Skills with Scott Farley of The Arcticom Group The Arcticom Group

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're talking about electrical troubleshooting. This topic comes up so often in our training programs and it's one that challenges both new and experienced refrigeration technicians. Here, we cover everything from proper voltage, to reading and understanding manuals, and tips for using systematic approaches to solve problems. We also discuss proper calculation of refrigerant charge, electrical safety measures and how to be more efficient in the field. In this episode, we cover: -Refrigeration electrical troubleshooting insights -Importance of reading manuals -Understanding electrical wiring diagrams -Electrical troubleshooting techniques -Resources you can use in the field -Electrical safety and professional growth Helpful Links & Resources: VIDEO: Electrical Troubleshooting 101: How to Diagnose & Fix Refrigeration Problems Like a Pro Episode 259. CO2 Experts Live: Electrical Troubleshooting with Rusty Walker Episode 327. Electrical Troubleshooting Strategy

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our live "Morning Coffee" sessions inside our Refrigeration Mentor Community with longtime refrigeration technician, Andrew Freeburg and fellow refrigeration prefessionals. This discussion covers a variety of technical topics including inspecting compressors, proper sensor placement and insulation, particularly for gas cooler outlet sensors, as well as diagnosing system issues such as liquid line frosting due to low refrigerant charge. Interested in joining the next meetup live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Hands-on refrigeration training -Compressor troubleshooting and maintenance -CO2 refrigeration system best practices -Ensuring accurate temperature readings -Drop leg sensor placement and insulation guidelines -CO2 supermarket refrigeration -Frosted liquid line -Thermodynamics in refrigeration Helpful Links & Resources: VIDEO: Scroll Compressor Teardown: What to Watch For VIDEO: Troubleshooting CO2 Gas Coolers with BAC Part 1: Sensors, ECM Fans, Water Issues & Setup Tips Episode 17. Troubleshooting the Gas Cooler of a Transcritical CO2 Refrigeration System with Lars Hørup Jensen Episode 133. Your Compressor Success Guide

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our "Morning Coffee" sessions inside our Refrigeration Mentor Community with longtime refrigeration professionals Andrew Freeburg and Erik Holland, discussing challenges and solutions for the refrigeration workforce. We share experiences and insights into technician shortages, training new technicians, and the evolving landscape of refrigeration. We also get into a technical deep dive on oil analysis, detailing how to read lab reports, assess moisture, contaminants, and acidity in refrigeration systems. Interested in joining the next meetup live? Join our FREE Refrigeration Mentor Community today. In this episode, we discuss: -Challenges in the refrigeration industry -Importance of mentorship in the trades -Training and knowledge sharing -Global perspectives on refrigeration -Hands-on troubleshooting tips -Refrigeration safety and efficiency -Career opportunities in refrigeration -Understanding oils in compressors -Refrigeration oil analysis -Moisture control -Analyzing oil samples -Refrigeration preventive maintenance strategies

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another in our "Morning Coffee" series inside our Refrigeration Mentor Community featuring longtime refrigeration professionals Andrew Freeburg and Erik Holland. Here, we reflect on achievements from 2025 and set goals for 2026, highlighting the importance of planning and proactive goal setting. We also cover some technical topics like case wiring, defrost heaters, and electrical diagrams. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Reflecting on 2025 achievements -Setting goals for 2026 -High pressure valve issues -Fine-tuning system performance -Fan speeds -Troubleshooting electrical issues in refrigeration systems -Wiring diagrams -Diagnosing electrical problems -Global electrical standards Helpful Links & Resources: Episode 210. Mastering Goal Setting to Skyrocket Your Professional Growth Episode 358. Trend Graphs and CO2 System Troubleshooting with Andrew Freeburg and Erik Holland Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this special episode, we feature an original song we created using AI titled "Built in the Field"' illustrating the experiences and challenges faced by refrigeration field technicians, while celebrating our hard work and dedication. Listen, add to your playlist and let us know your thoughts! Links & Resources: Lyric Video on Facebook Cory Cruz "The Refrigeratin Man"

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this special episode, we feature an original song we created using AI titled "Built In The Field"' paaying tribute to the experiences and challenges faced by refrigeration field technicians and celebrating our hard work and dedication. Listen, add to your playlist and let us know your thoughts! Links & Resources: Lyric Video on Facebook Cory Cruz "The Refrigeratin Man"

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, I'm sharing ways you can bring more value to your customers, and in turn, the breakthroughs that come back in the form of new skills, job opportunities, pay raises etc. It starts with investing in professional growth and leveraging a community of fellow refrigeration professionals for support, learning and networking. I also share a couple inspiring stories of technicians who have rapidly advanced their skills through dedication and taking action on training programs. In this episode, we discuss: -Importance of growth and motivation -Professional development in the trades -Overcoming challenges -Success stories -Soft skills that make a big difference -Communication skills development -Building relationships in the refrigeration industry -How to get more work in refrigeration -Leadership skills Helpful Links & Resources: Episode 216. How to Become a Better Technician By Creating More Value Episode 139. 7 Tips For Building Good Training And Development Habits

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is about the importance of curiosity when your out on service calls to help in troubleshooting. Curiousity is a trait that will open doors to dig deeper, leverage resources, inspect things more thoroughly and get to know the complex systems we work on so much more. Here, we cover troubleshooting techniques, specifically focusing on dealing with proof failures and SLA alarms. The more you learn, the more refrigeration technicians will fast-track your careers and become confident, skilled professionals. In this episode, we cover: -Importance of curiosity in refrigeration -Refrigeration training programs -Proof failure troubleshooting example -Advice for on-call technicians -Investing in yourself and continuous learning Helpful Links & Resources: Episode 250. Service Call Stories and Troubleshooting Tips with Andrew Freeburg Episode 333. Training and Troubleshooting Tips to Level Up Your Career Episode 295. A Compressor Story: The Key to Faster Troubleshooting

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is is on oil management for CO2 refrigeration systems, another of our "Morning Coffee" sessions with longtime refrigeration professionals Andrew Freeburg and Erik Holland. We cover the intricacies of oil separators, the role of velocity in oil management systems, the significance of net oil pressure, the impact of variable frequency drives (VFDs), and common troubleshooting techniques. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Challenges in oil management -Components of oil management systems -Practical tips and troubleshooting -Oil management in compressors -Oil sensor issues -VFDs and compressor rotation -Gauges and proper wiring -Scroll compressor lockups -Pressure differentials in oil separators -Maintenance and efficiency in CO2 systems -Advancements in CO2 technology Helpful Links & Resources: Episode 105: Oil Management w/ Philip Walker Arneg Systems Episode 253. CO2 Experts: Designing an Oil Management System with Nabil Cook Episode 358. Trend Graphs and CO2 System Troubleshooting with Andrew Freeburg and Erik Holland

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is another of our "Morning Coffee" sessions with longtime refrigeration professionals Andrew Freeburg and Erik Holland, diving deep into trend graphs and CO2 refrigeration system troubleshooting. We cover understanding and reading trend graphs, practical tips for locating and analyzing system inefficiencies, and the procedures for fine-tuning refrigeration systems. We also discuss gas coolers, the impact of ambient temperature on system performance, and effective strategies for maintaining system stability in cold climates. Interested in joining the next Morning Coffee live? Join our FREE Refrigeration Mentor Community today. In this episode, we cover: -Understanding trend graphs -Comparing graphs on E2 systems -Trend graph analysis -Graphing techniques on E2 systems -Analyzing CO2 system graphs -System fine-tuning -Creating work and building credibility -Advanced graph analysis and troubleshooting -High pressure valve and bypass valve correlation -Gas cooler and system stability -System oscillations and expansion valves -Gas cooler maintenance -High pressure valve control -Fan control strategies -Troubleshooting fan and gas cooler issues -Winter challenges in CO2 systems -Heat reclaim and system efficiency Helpful Links and Resources: Episode 287. CO2 Experts: Using Trend Graphs to Troubleshoot CO2 Systems with Andrew Freeburg Episode 144. Troubleshooting CO2 High Pressure Valves Using Trend Graphs with the CAREL Boss System Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs