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 cover electricity basics for refrigeration technicians - using and checking a meter, electrical safety, and key terms including voltage (electrical pressure), current (flow of electrons), resistance (opposition to flow), and Ohm's Law. We'll also review electrical terminology and walk through circuits, finding breaks in the path, the difference between series and parallel circuits, AC vs DC, conductors vs insulators, open/closed/short conditions wiring diagrams. Strong electrical fundamentals are critical for refrigeration technicians and will help you reduce troubleshooting time, callbacks, and jobs stress. In this episode, we discuss: (00:47) Meters And Electrical Basics (02:21) Voltage Current Resistance (05:18) Ohm's Law (06:16) Power Watts And Horsepower (08:10) Circuits And Breaks (10:01) Series Vs Parallel (11:46) AC Vs DC Power (14:05) Open, Closed And Shorts (15:39) Wiring Diagrams And Electrical Safety Helpful Links & Resources: Episode 371. A 6-Step Process for Faster Electrical Troubleshooting Episode 323. Electrical Troubleshooting 101 Episode 259. CO2 Experts Live: Electrical Troubleshooting with Rusty Walker

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 why the technicians who consistently invest in themselves are the ones who level up the fastest. Technical skills are only one part of becoming a great refrigeration technician—communication, customer service, leadership, problem-solving, and personal development all play a major role. I'll share real-world examples of technicians who have grown into leadership roles, built new areas of business, and even outgrown their companies by putting their careers ahead of simply doing their day jobs. We'll also discuss the value of mentorship, structured learning, finding your biggest knowledge gaps, and deliberately working on the things that make you uncomfortable. In this episode, we cover: (03:00) The Skills Beyond Technical Troubleshooting (04:00) Moving From Technician To Manager (05:00) Why Mentorship Can Accelerate Your Learning (06:00) Learning From Other Technicians' Experience (07:13) Developing Communication And Customer Service Skills (08:00) Dealing With Difficult Customers And Repeat Service Calls (10:00) The Difference Between Average And Great Technicians (12:00) Using Manuals And Resources To Solve Problems (13:00) Building Your Own Learning Library (16:00) Putting Your Career Ahead Of Your Job (17:00) Building A Broader Portfolio Of Refrigeration Skills Helpful Links & Resources: Episode 39. Invest In Your Refrigeration Knowledge Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster Episode 392. Transitioning From Technician to Manager: Building Leadership Skills in Refrigeration with Todd Ernest of Climate Pros

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 the growing skills and knowledge gap in the refrigeration industry and why that gap represents a massive opportunity. With more experienced technicians retiring, increasingly complex equipment and new technologies like CO2 and A2Ls entering the field, the demand for highly skilled refrigeration technicians continues to grow. We talk about specialization, learning controls, startups and commissioning, becoming more resourceful, and building the skills that allow refrigeration technicians to solve harder problems and command higher wages. In this episode, we discuss: (00:48) The Growing Refrigeration Skills Gap (02:00) Why Refrigeration Technicians Are In High Demand (04:00) The Versatility Of A Refrigeration Technician (06:00) Why Refrigeration Skills Create Career Opportunities (08:00) Specializing In CO2, Controls And A2Ls (12:00) Identifying Your Biggest Skill Gaps (14:00) Learning Controls  (16:00) Why Modern Refrigeration Systems Are More Complex (22:00) The Importance Of Mentorship And Asking Questions (24:00) Specialization In Startups And Commissioning (28:00) Adapting To New Refrigeration Technology (30:00) Why Refrigeration Is A Recession-Resistant Career (32:00) Adapting To The Next Generation Of Technicians (34:00) The Opportunity Ahead For Refrigeration Technicians Helpful Links & Resources: Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 364. Addressing Technician Shortages & Oil Analysis Episode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm sharing some of the tips, resources and materials refrigerators should be checking out to learn refrigeration faster. These tips and resources need to be utilized both on that job and after work, things like manuals, processes, checklists, and investing in additional training after hours. We'll also discuss documenting service call steps, reviewing for missing details, and using on site data AI to refine concise checklists and get to the root of issues. These are the keys that the best techs use to stop guessing on service calls and solve issues faster and more confidently. In this episode, we cover:  (01:51) Writing Things Down to Learn (02:43) Repetition Builds Mastery (03:14) CO2 Procedures Step by Step (05:16 Teaching Like a Mentor (07:08) Building A Framework for Any System (08:55) Using AI in Refrigeration (09:57) Knowing Normal Data (11:20) Building Habits That Stick Helpful Links & Resources: BOOK: Atomic Habits by James Clear Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster Episode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart

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 reviewing a recent field story from inside the Refrigeration Mentor Community of handling a "compressor proof/safety failure" alarm. Upon arrival, the compressor was running. But instead of assuming a nuisance trip, this episode walks through how confirm the cause of issue by running diagnostics using free manufacturer software (Copeland CoreSense). Being able to accurately to validate findings builds technician confidence, speeds up troubleshooting time and helps prevent future costly failures. In this episode, we discuss: (00:48) Compressor Trip Alarms (02:23) Copeland CoreSense Basics (04:02) Laptop and Cable Setup (05:42) Connection Pain Points (07:09) Fixing the Wiring (08:42) How Validation Builds Confidence (10:19) Refrigeration Troubleshooting Skills Helpful Links & Resources: Website: Copeland CoreSense Episode 378. Field Stories: Compressor Failure, Case Freeze-Up Troubleshooting, and Electrical Safety Episode 295. A Compressor Story: The Key to Faster Troubleshooting

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 changing oil separators on a CO2 supermarket system. THis conversation stems from a recent field story from a fellow tech where the separator outlet valve kept leaking after pressure was relieved. We'll discuss the process for fixing the issue safely,  and how this type of learning through community knowledge-sharing and continuing education is so important for all refrigeration technicians new and old to troubleshoot faster and more confidently. Want to join the next Refrigeration Community Meetup live? Click here to join free!  In this episode, we cover: (02:20) Oil Separator Valve Fix (02:59) Pressure Reversal Explained (06:09) Why Mentorship Matters (06:46) Refrigeration Career Path Tips (07:28) Refrigeration Safety Helpful Links & Resources: Episode 330. Oil Issues in Refrigeration Systems Episode 390. CO2 Oil Management (Part 1): Lubrication Basics, Oil Selection, Testing, and Troubleshooting with Alessandro Silva of Bitzer Episode 71. Top Tips For Learning CO2 Refrigeration

Learn more about Leon on LinkedIn and Bueno Analytics Website: Bueno Analytics In this episode we're, joined by Leon Wurfel, Founder of Bueno Analytics, to discuss refrigeration leak detection, particularily as it pertains to forthcoming new regulations in the industry. Leon dives into how leak detection is evolving as codes and regulations change, including AIM (American Innovation and Manufacturing) Act, as well as new software, improving issue prioritization, helping predict high-temp alarms. He also discusses how Bueno grew from commercial building energy-efficiency analytics into grocery refrigeration through a long partnership with Woolworths, and shares advice for technicians to get a login and use innovative analytics tools to reduce after-hours callouts.  In this episode, we cover: (00:49) Leak Detection Is Changing (06:32) Modern Leak Detection Models (07:50) Seasonal Receiver Level Basics (11:15) Reducing Leaks And Predicting Alarms (13:12) Cutting After Hours Callouts (15:52) Using Data To Sell Maintenance (19:58) Stopping Energy Drift (21:53) Setpoint and Alarm Drift (22:41) Knowing the Normal Baseline (25:07) Manual Inspections (29:07) Older Controls (33:14) AI Tools in Refrigeration Helpful Tools & Resources: Bueno LinkedIn Company Page: https://www.linkedin.com/company/buenoanalytics/ Video Testimonial from Woolworths: https://buenoanalytics.com/video-testimonial-woolworths-refrigeration-management/   Episode 334. 10-Point Rack Preventative Maintenance Checklist Episode 263. The Importance of Understanding Trend Graphs with Andrew Freeburg Episode 213. Supermarket Refrigeration Preventative Maintenance with Andrew Freeburg Join the Refrigeration Mentor Hub here

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 taking a step back to talk about what it really takes to become a great refrigeration technician - the mindset and troubleshooting habits that separate technicians who simply change components from technicians who understand systems, find root causes, and solve harder problems with confidence. I'll also share practical troubleshooting principles and a preview of some major upcoming things for our Refrigeration Mentor Academy. In this episode, we discuss: (00:53) Why CO2 Refrigeration Knowledge Matters (04:40) Being a Parts Changer vs A Skilled Tech (07:36) TX Valve and Airflow Checks (12:21) Numbers Tell The Story (14:23) Heat Reclaim Troubleshooting (21:30) Pattern Recognition and Fast Tracking Learning (28:05) Academy Sneak Peek (31:28) Mentoring and Using AI  Helpful Links & Resources: Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster Episode 299. Basic Refrigeration 101 Episode 295. A Compressor Story: The Key to Faster Troubleshooting

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This is the second of a 2-part episode in our "CO2 Unfiltered" series (link to Part 1 below), this one covering what causes compressor failures and how to prevent them with Jonas Linnemann, Vice President of Technology at Vitalis. Jonas covers properly storing oil, receiver-pressure control strategies, liquid-line branch-offs, oil trapping, oil slugs and the value of visual checks, quick tests, and lab oil analysis. He also shares practical service and maintenance tips that will help refrigeration techs prevent recurring compressor failures. In this episode, we discuss: (00:48) CO2 Oil Storage Basics (02:59) Receiver Pressure Oil Issues (06:53) Honeypot Oil Accumulator (09:38) Oil Charge And Separator Efficiency (11:21) Startup Oil Fill Procedure (19:33) Liquid Line Branch Offs (28:26) PAG vs POE Oil Return (30:08) Evaporators and Oil Slugs (31:52) Field Checks and Piping Fixes (34:21) Jacobs Velocity Explained (38:22) Double Risers and Traps (50:33) Oil Testing and Degassing Helpful Links & Resources: Jonas on LinkedIn Vitalis PART 1: Episode 420. CO2 Oil Management: Preventing Compressor Failures with Jonas Linnemann of Vitalis Episode 253. CO2 Experts: Designing an Oil Management System with Nabil Cook Supermarket Workshop Series Part 1: Oil Management, Oil Components and Troubleshooting

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This is the first of a 2-part episode in our "CO2 Unfiltered" series covering what causes compressor failures and how to prevent them, featuring Jonas Linnemann, Vice President of Technology at Vitalis. Jonas explains why oil return is more challenging in CO2, and covers topics like primary vs secondary oil circuits, separator efficiency and compressor oil carryover.  He also shares practical service and maintenance tips that will help refrigeration techs prevent recurring compressor failures. In this episode, we discuss: (01:34) Why Oil Management Matters (03:34) Booster System Basics (04:47) Common Oil Misconceptions (09:20) Viscosity and CO2 Solubility (15:21) Primary vs Secondary Oil Circuit (19:59) Reading P&IDs (23:16) Oil Return Overview (24:57) Strainers and Maintenance (27:19) CO2 Separator Cartridges (29:03) Differential Pressure Checks (32:39) Oil Carryover Troubleshooting (36:40) Cartridge Blowout Warning Signs (40:57) Contamination in Regulators (44:34) Cartridge Change Procedure (47:35) Evacuation and O-Ring Tips Helpful Links & Resources: Jonas on LinkedIn Vitalis Episode 390. CO2 Oil Management (Part 1): Lubrication Basics, Oil Selection, Testing, and Troubleshooting with Alessandro Silva of Bitzer Episode 330. Oil Issues in Refrigeration Systems Episode 124: CO2 System Oil Management: Insights from Adam Chapman of Westermeyer Industries

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This is the second of a 2-part episode in our "CO2 Unfiltered" series where we're joined by Massimo Pellizzari, Senior Commissioning Engineer at Daikin, for an in-depth look at Daikin's two-stage CO2 condensing units (link to Part 1 below). Here, we cover wiring, as well as troubleshooting via the onboard display and buttons, alarm code structure, and conditions like wet operation, high-pressure switch trips, and how the controller can detect overcharge or refrigerant shortage. This 2-part episode is packed with practical insights to help technicians work more faster and more confidently with CO2 condensing units. (00:36) Power Supply Wiring Basics (05:44) High Pressure Switch Cutout (07:07) Reading Alarm Codes (08:38) Wet Operation and Superheat (14:21) Expansion Valves for High Pressure (17:50) Piping Diagram and Valve Locations (19:49) Subcooling Charts and Charge Errors (23:40) Recovering or Adding Charge Safely (26:17) Service Access Basics (27:56) Backup Modes (31:44) Setpoints and DIP Switches (33:52) Piping Logic and P&ID (37:22) Isolating and Purging CO2 (39:45) Oil Loss and Recharging (40:55) Valve and Sensor Diagnostics (47:33) Install Tips and Cleanliness Helpful Links & Resources: Massimo in LinkedIn Daikin PART 1: Episode 418. Daikin 2-Stage CO2 Condensing Unit Servicing and Troubleshooting with Massimo Pellizzari (Part 1) Episode 14. What About Condensers in Refrigeration Applications? Episode 394. Condensing Unit Checkpoints

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This is the first of a 2-part episode in our "CO2 Unfiltered" series where we're joined by Massimo Pellizzari, Senior Commissioning Engineer at Daikin, for an in-depth look at Daikin's two-stage CO2 condensing units. Massimo explains the design philosophy behind these systems, how they differ from traditional refrigeration equipment and the best practices for installation, commissioning, evacuation, charging and servicing. Whether you're new to CO2 or looking to sharpen your troubleshooting skills, this episode is packed with practical insights to help technicians work more faster and more confidently with CO2 condensing units. In this episode, we discuss: (03:10) Why CO2 condensing units are becoming more common worldwide (05:30) Daikin's two-stage CO2 condensing unit lineup (07:15) Swing compressor technology and compressor design (09:45) Oil in CO2 systems (11:45) Two-stage compression and reducing discharge temperatures (17:30) Controller features, monitoring and diagnostics (24:00) Refrigerant charge calculations and piping design software (33:30) Factory testing, vibration protection and installation considerations (38:30) Service valves, access points and system maintenance (49:30) Pressure testing and evacuation procedures (50:55) Opening EEVs and solenoid valves during evacuation (51:00) Refrigeration-grade CO2 and refrigerant purity (53:10) Proper CO2 charging procedures and overcoming the triple point (57:30) Service ports, valve design and final technician tips Helpful Links & Resources: Massimo in LinkedIn Daikin Episode 414. Breaking the Stigma and Learning to Love CO2 Episode 180: Developing your CO2 Knowledge into Experience Episode 146: CO2 Technical Training with Brett Wetzel

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This episode includes highlights from a recent live Refrigeration Mentor Community meetup where we covered real-world CO2 rack issues, system tuning, troubleshooting, and startup strategies, sharing practical techniques we've learned in the field. We covered gas cooler fan tuning, transcritical operation, oil separator maintenance and service valve tips. This meetup featured experienced CO2 technicians Patrick Gregory, Noah Walker, Andrew Freeburg, Billy Carlson and others sharing valuable insights that can help fellow technicians diagnose problems faster, improve system performance, and learn from the experience of others.  In this episode, we discuss: (02:15) Fine-tuning CO2 racks (05:20) Gas cooler fan control strategies (09:00) Rack tuning (12:00) Why every CO2 system requires its own tuning strategy (16:00) Oil separator filter replacement and diagnosing oil trip issues (18:00) Proper rack pump-down procedures (20:00) Service valve troubleshooting (23:45) Common ball valve issues Helpful Links & Resources: Episode 382. Why Techs Get Stumped on Supermarket Racks (How To Fix It) Episode 250. Service Call Stories and Troubleshooting Tips with Andrew Freeburg Episode 163. A Pro's Handbook for Effective Refrigeration Troubleshooting

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This episode is the first of a 10-part "CO2 Unfiltered" series, where we're joined by Ernesto Rodriguez to discuss hermetic CO2 pumps. Ernesto has decades of practical knowledge to help technicians understand how CO2 pumps really work and why so many failures can be prevented through proper design and installation. Here, we cover pump selection and sizing, and troubleshooting, including how to recognize cavitation and flash gas, avoid common piping mistakes, optimize pump performance, and commission CO2 pumps with confidence. In this episode, we discuss: (01:15) Introduction to CO2 pumps and why they matter (04:50) Internal vs. external recirculation systems (09:20) Pump construction and hydrostatic bearing lubrication (15:45) Variable frequency drives and operating at the correct pump curve (19:20) Recirculation rates and cascade system applications (24:15) Pump sizing fundamentals, NPSH, and avoiding cavitation (33:45) Flow regulation, differential pressure regulators, and system balance (46:30) Installation best practices, suction piping, elbows, and insulation (55:00) Proper pipe sizing and maintaining flow velocity (01:01:15) Multiple pump installations and preventing turbulence (01:09:15) Startup, commissioning, and maintenance checks (01:12:30) Troubleshooting cavitation, flash gas, vibration, and pump failures Helpful Links & Resources: Ernesto on LinkedIn Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg 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

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 teaching advanced brazing and soldering skills for copper piping with Mike Belanger from the Copper Development Association. Mike teaches soldering and brazing fundamentals: proper cutting, reaming, cleaning, minimal fluxing, full insertion, correct heat application. This session also covers vital tips for  how to properly braze starting with the foundations of what refrigeration techs need to know and how to make better joints and prevent leaks.  In this episode, we discuss: (05:57) Soldering Basics (11:17) Six-Step Joint Soldering Method (15:42) Capillary Space Science (18:31) Heat And Filler Technique (20:00) Avoiding Voids And Leaks (27:45) Brazing Method (34:30) Flux Temperatures And Torches (37:09) Torch Tip Sizing (38:10) 3T Penetration Rule (39:23) Fillet Shoulder Strength (40:41) Braze Test Breakdown (44:29) Annealing Pressure Derating (48:29) Nitrogen Purging Essentials (51:25) Dissimilar Metals and Flux (55:13) High Pressure CO2 Piping Helpful Links & Resources: DOWNLOAD: The Copper Tube Handbook Episode 20. Refrigeration Piping...Who Knew Episode 108: CO2 Refrigeration High Pressure Copper Fittings with Tal Gutbir Episode 386. CO2 Piping

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 how techs are breaking the common fears and apprehensions around CO2 refrigeration as it grows and systems become more controls-heavy. I'll share my own early intimidation with CO2, including having to call for senior help. We'll discuss how learning critical CO2 refrigeration pillars like P&IDs, wiring diagrams, I/O schedules, and refrigeration schedules will help techs get more comfortable with CO2 and learn faster.  In this episode, we cover: (00:48) My First CO2 Wakeup (04:56) Training Gaps in the Refrigeration Industry (06:40) Investing in Yourself (09:16) Field Diagnosis Mindset (09:56) Using P&IDs and Prints (13:34) Owning Your Career Growth (16:35) Group Learning Opportuities (20:43) Training the Next Generation of Techs Helpful Links & Resources: Episode 369. The CO2 Mindset Shift: How To Get Past The Fears Episode 370. Training Technicians Who Think, Not Just Fix with Billy Carlson Episode 201. Removing the Fear of CO2 Refrigeration with Andrew Freeburg

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm breaking down my 4-pillar framework used in my supermarket and CO2 refrigeration training programs. These pillars include understanding system design, electrical, the input and output (I/O) schedule, and the refrigeration legend/schedule. Building your refrigeration knowledge on these pillars is critical for technicians to identify what's normal, verify issues systematically, and solve harder problems faster.  In this episode, we cover: 01:52 The 4-Pillar Refrigeration Mentor Framework 02:55 System Design, P&IDs and Piping Schematics 03:50 Electrical Systems, Metering and Wiring Diagrams 05:03 Input and output (I/O) Schedules 06:47 Refrigeration Schedule/Legend (Normal Operation) 08:35 How to Diagnose Issues Faster Helpful Links & Resources: DOWNLOAD: Refrigeration Mentor Playbook (click here) Episode 395. Basics of Refrigeration: Importance of Revisiting the Fundamentals Episode 299. Basic Refrigeration 101 Episode 3. Introduction to CO2 Refrigeration

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This episode is a replay of a recent Refrigeration Mentor Community Meetup where we helped fellow techs with some technical CO2 refrigeration troubleshooting. The live group discussed a problematic CO2 store with high superheat, recurring low-temp oil issues, phase-loss/current-imbalance alarm and others. You'll hear solutions, tips and advice from the fellow techs on the call, including Mikaela Law, Patrick Gregory, Andrew Freeburg, Billy Carlson, Noah Walker, and others. Interested in joining the next meetup? Click here and join our FREE Refrigeration Mentor Hub. In this episode, we cover: (01:39) High Superheat and Injection (03:20) Liquid Line Drop and Flashing (05:14) Pulse Valve Orifice Fix (08:10) Oil Logging (14:41) Pressure Differential and Port Sizing (19:34) HP Valve Failure (23:46) Ice Cream Frost Airflow Hack (26:44) Designing a Custom Divider Prototype (28:39) Selling Value to Customers (32:54) VFD Phase Loss Troubleshooting (35:37) Drive vs Compressor Diagnosis (38:46) Bypass Tests and Amp Imbalance (40:08) Using Bitzer Software Helpful Links & Resources: Episode 378. Field Stories: Compressor Failure, Case Freeze-Up Troubleshooting, and Electrical Safety Episode 360. Get Curious on Service Calls (For Faster Troubleshooting) Episode 382. Why Techs Get Stumped on Supermarket Racks (How To Fix It)

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, I sit down with Supermarket Refrigeration Technician Jacob Decker to discuss how newer technicians can land opportunities and gain experience faster. Jacob shares how he moved from residential work and tech school into commercial refrigeration and a full time career with Walmart through connections, overcoming fears, learning form mistakes, and how he benefited from mentorship and structured training. We also cover common challenges for new techs, plus practical habits to build that will fast track the learning curve and open up so many opportunities for building your career in the industry.  In this episode, we discuss: (01:19) Breaking Into Refrigeration (02:44) First Commercial Job Lessons (05:42) Biggest Surprises and Challenges Entering Refrigeration (07:20) Learning from Mistakes (12:39) Mentorship and Generational Shifts in the Trades (16:10) Common Pitfalls for New Refrigeration Techs  (18:32) Building ConfideEpisode 186: How To Attract Young People To The Refrigeration Trade (20:40) Checklists (25:08) Future Refrigeration Tech and CO2 (26:47) Work-Life Balance in Refrigeration (28:35) Building Better Work Habits (34:42) Mental Health in the Trades Helpful Links & Resources: Episode 85. Generation Z with love2hvac Episode 186: How To Attract Young People To The Refrigeration Trade With Rusty Walker Episode 190. Turning Mistakes Into Lessons and Accelerating Your Refrigeration Career with Andrew Freeburg

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'll share a couple quick and practical oil tips for technicians working on racks with Copeland compressors - often times preventing unnecessarily draining and replacing good oil. These cover properly identifying oil issues, important checks, tips for removing oil from the compressor without wasting it. These tips will help techs save time, reduce mess and avoid charging customers for unnecessary oil.  In this episode, we discuss: (00:49) Checking the Oil Pump Screen (01:20) Three Ways to Save Oil (02:57) Faster Oil Fixes (06:13) How to Save Time, Money and Mess on Service Calls Helpful Links & Resources: Episode 330. Oil Issues in Refrigeration Systems Episode 359. Oil Management with Andrew Freeburg Episode 253. CO2 Experts: Designing an Oil Management System with Nabil Cook

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this special episode, we're marking World Refrigeration Day (June 26) with a panel discussion on how technology and continuous training are transforming the skilled trades, particularly in attracting and retaining new technicians. This panel features Amrit Robbins, CEO of Axiom Cloud,  Kyle Eastwood, Refrigeration Specialist at Axiom Cloud, and  Joe Stough, VP of Strategy and Technology at ARI. We cover how the industry can better support technicians by combining training, mentorship and technology, as well as leveraging AI to learn, reduce diagnostic time, cut callbacks, and even reduce overnight and weekend work.  In this episode, we discuss: (04:19) Why Techs Matter More Now Than Ever (05:34) Being Better Prepared for Service Calls (12:38) Training, Mentorship and AI in Refrigeration (17:50) Proactive Maintenance (19:40) CO2 Refrigeration Systems  (21:33) Breaking the CO2 Stigma (24:40) Advice for CO2 Calls (25:36) Technician Shortage Reality (26:59) Two-Part Refrigeration Industry Fix (27:54) Making Trades Attractive (33:29) Validating Technician Training (42:05) Proving ROI on Training Helpful Links & Resources: Episode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 408. Retaining and Mentoring New Technicians (World Refrigeration Day Panel) Axiom Cloud ARI Amrit Robbins on LinkedIn Joe Stough on LinkedIn 

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this special episode, we're marking World Refrigeration Day (June 26) with a panel discussion on retaining skilled refrigeration tradespeople and the importance of mentoring the next generation. Panelists Aidan Lucey, Erik Holland, Andrew Freeburg, Patrick Gregory, and Noah Walker discuss what kept them in the trade early on, as well as what great mentorship looks like, the challenges apprentices face today, and rapidly increasing technology and information quality across the refrigeration industry.  In this conversaton, we discuss: (00:44) Why Mentorship Matters In the Trades (05:50) What Kept People in the Trade (12:33) Defining Great Mentorship (19:36) Challenges for Apprentices Today (25:13) Training Under Pressure (25:58) Technical Complexity and AI in the Trades (26:58) Building Safe Learning Culture (30:30) Mentorship Structures That Work (33:39) Career Advice for Apprentices (39:06) World Refrigeration Day Reflections (40:01) Mentor Lessons You Can't Google (45:57) Recruiting the Next Generation of Refrigeration Professionals Helpful Links & Resources: World Refrigeration Day Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 186: How To Attract Young People To The Refrigeration Trade With Rusty Walker Aidan Lucey on LinkedIn Erik Holland on LinkedIn Andrew Freeburg on LinkedIn Partick Gregory on LinkedIn

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 introducing a new segment called "Can You Solve This Service Call?" using real life examples to test your knowledge as a technician walking into a call. In this example, we've got a compressor running continuously, some key readings, however it's determined the compressor itself isn't the issue. We'll run through critical checks and processes for this common situation, all in an effort to outline things to look for and help techs identify root cause issues faster and more confidently.  In this episode, we cover: (01:34) Example Service Call (04:25) Sequence of Checks (05:25) Key Check: Filter Drier (09:30) Think Restriction First (10:06) Service Call Checklists  (12:09) Building Customer Trust Helpful Links & Resources: DOWNLOAD: Free System and Compressor Troubleshooting Guide Episode 360. Get Curious on Service Calls (For Faster Troubleshooting) Episode 181: Ways To Be More Efficient As A Technician And How To Reduce Your Troubleshooting Time with Jim Marsen

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we sit down with longtime refrigeration technician Tim Homan to discuss his path from casino in-house work in Las Vegas to "hardcore" supermarket rack and CO2 service. We love sharing the journeys of fellow techs to motivate and inspire those across the industry. Here, Tim talks about honing strong electrical/refrigeration fundamentals, reading manuals and investing heavily in training and tools as crucial to his diverse industry successes. We also dig into some Tim's real life service call stories, as well as managing workload stress, relationship-building and thoughts about the future of refrigeration.   In this episode, we cover: (01:00) Tim Homan's Trade Journey (02:12) Emphasis on Training (03:44) CO2 Refrigeration and Glycol Work (05:52) Booster vs Cascade Systems (08:35) Liquid Line Fixes (12:12) Following Mnaufacturer Specs (17:57) Realities of Refrigeration Maintenance Checks (25:24) Reading Schematics Faster (27:59) Skills Refrigeration Techs Need Now (29:12) Refrigerant Law and Codes (29:32) Evacuation and Hose Purging (30:37) Future of CO2 Tech (32:42) Propane and Micro Systems (34:44) Investing in Tools (37:33) CO2 Gauges and Safety (39:14) E3 Controllers and Programming (40:44) Adiabatic Towers (43:08) CO2 Refrigeration Evolution and Design (46:01) Advice for Refrigeration Technicians Helpful Links & Resources: CO2 Unfiltered Episode 302. Journey Into Refrigeration with Connor Strickland Episode 185: Refrigeration is a Journey: Ashley Fuller's Refrigeration Roadmap Episode 145 - From Small Business to Refrigeration Giant: Adam Knutz's Journey

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm outlining five things refrigeration techs need to check before replacing a compressor to avoid an unnecessessary change out. Between 30-40% of swapped compressors are found to have no real issue, and these checks will help technicians uncover root-cause issues and potentially avoid costly and time-consuming work that might not be needed. This episode details the five checks: oil level and oil management, compressor superheat, electrical health, operating conditions, and controller/sensor accuracy. We also cover key readings and how to better understand failure modes and prevent repeat failures. In this episode, we discuss: (00:48) How to Avoid Replacing Good Compressors (03:16) Check 1: Oil Management (04:27) Check 2: Compressor Superheat (06:13) Check 3: Electrical Health (07:14) Check 4: Operating Conditions (08:19) Check 5: Controllers and Sensors (09:56) Inspecting a Failed Compressor (12:14) Documentation and Preventing Repeated Failures Helpful Links & Resources: FREE GUIDE: System and Compressor Troubleshooting Guide Episode 115: Understanding Compressors: What You Need To Know Episode 329. The Ins & Outs of Compressors Episode 388. Step-By-Step Compressor Change Out (Service Call Recap) with Andrew Freeburg

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 longtime refrigeration technician and Refrigeration Mentor Community Ambassador Andrew Freeburg to discuss World Refrigeration Day (June 26) and this year's theme, "Cool Intelligence." We explore how the industry's real intelligence comes from the experience, judgment, and problem-solving of technicians, engineers, designers, and operators who protect the cold chain, food safety, energy efficiency and daily life. Conversely, also dive into how artificial intelligence (AI) can support technicians today, working in conjunction with hands-on skills, verification, intuition, and building customer trust.  In this episode, we cover: (00:08) World Refrigeration Day (00:57) Defining "Cool Intelligence" (02:21) Field Judgment Under Pressure (05:36) Supermarket Refrigeration and Cold Chain (11:46) AI in the Refrigeration Industry (16:10) Building Confidence and Celebrating Wins (18:27) The Refrigeration Industry Intelligence Gap (28:30) Advice for New Refrigeration Techs Helpful Links & Resources: Andrew Freeburg on LinkedIn Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill Episode 354. Embracing AI and Personal Development in Refrigeration Episode 352. AI and New Refrigeration Training & Troubleshooting Resources

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 discussing CO2 piping - particulatily liquid line. takeoff arrangements. We cover takeoff arrangements, loop systems, also some important technical information manufacturers recommend which give you a reliable blueprint of look for when you're on your service calls. We also talk about manufacturer specs, asking "why" behind designs and best practices when dealing with CO2 piping.  In this conversation, we cover: (02:42) Loop and Circuit Designs (03:59) Side vs Bottom Takeoff (06:13) Flash Gas and Underfeeding (08:37) Following Manufacturer Specs (09:28) Piping Best Practices (09:59) Asking Better "Why" Questions Helpful Links & Resources: VIDEO: The Truth About CO2 Oil Management, What Causes Failures and How to Prevent Them with Jonas Linnemann of Vitalis Episode 317. CO2 Piping Design (Tips to Protect Compressors and Prevent Failures) with Chris Griffiths Episode 386. CO2 Piping

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 diving into provincial/state, national, and WorldSkills events for tradespeople - high-pressure, real-world competitions that build many technical and troubleshooting skills. These programs strengthen our refrigeration trade amid rapid change (CO2, A2L, advanced controls, energy efficiency etc.) and ongoing technician shortages, while developing future leaders and improving company performance. Not only are these competitions fun and challenging, the long-term career benefits and learning - especially from global standards and practices - make these skills competitions incredibly worthwhile. Links below to find out more about national and global skills competitions.  In this conversation, we cover: (01:07) Discovering Skills Programs (04:02) Benefits of Skills Competitions for Tradespeople (06:53) Investing in Skills Development (10:21) Learning by Doing Under Pressure (13:07) Modernizing Training Worldwide (19:27) WorldSkills and National Skills Competitions (22:28) Becoming and Elite Refrigeration Technician Faster Helpful Links & Resources: GAME: https://refrigerationmentor.com/game/  Skills Canada SkillsUSA WorldSkills: Refrigeration & Air Conditioning Episode 139. 7 Tips For Building Good Training And Development Habits

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, I explain how techs can troubleshoot compressors and refrigeration systems faster and more confidently. I'll walk you through the content of my free 17-page System and Compressor Guide built around 23 key pressure/temperature checkpoints and six common mechanical compressor failure modes. This guide outlines practical steps for compressor replacement and verification, lubrication, oil breakdown and more. Knowing these will result in faster root-cause identification, fewer manager support calls, quicker performance, and even stronger job-interviews. You can download my free System and Compressor Troubleshooting Guide here.  In this episode, we cover: (02:32) Knowing Refrigeration Fundamentals First (02:50) 23 System Checkpoints (03:54) Reading The System Story (06:49) Patterns In Failures (08:38) Six Mechanical Failures (10:22) Compressor Swap Process (12:31) Overheating And Oil (15:24) Flooded Starts (18:06) Slugging Root Causes (18:54) Shell Design Differences (19:22) Floodback And Washout (23:41) Fast Diagnostic Checkpoints (25:19) Oil Loss Root Causes Helpful Links & Resources:  Episode 388. Step-By-Step Compressor Change Out (Service Call Recap) with Andrew Freeburg Episode 228. Tips for Faster Service Calls & Better Time Management Episode 115: Understanding Compressors: What You Need To Know

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this milestone 400th episode, we're joined by Andre Patenaude of Copeland to explain 8 critical sensors on CO2 refrigeration systems (video link to this seminar below). Andre breaks down the most critical CO2 refrigeration sensors found in supermarket systems, common failure modes, troubleshooting strategies, and how to prevent catastrophic system shutdowns, product loss, and compressor damage in transcritical CO2 systems. He also explains how technicians, service managers, and contractors can improve reliability through proactive monitoring, redundancy strategies, trend analysis, and smarter control logic. Thank you for listening, following and helping us reach 400 episodes! Check out all of our past episodes and follow the Refrigeration Mentor Podcast on Apple, Spotify and YouTube here. In this episode, we cover: (02:27) Why Critical Sensors Matter in CO2 Refrigeration (08:54) Booster System  (13:19) Gas Cooler Outlet Temp (23:31) Mitigation Strategies (31:24) Low Ambient Bypass and T2 Sensor (37:30) Drop Leg Pressure Transducer (41:14) Fan Modulation Chain Reaction (43:01) P1 Transducer Failover Options (45:46) Proactive P1 Calibration Checks (47:29) P2 Flash Tank Pressure Basics (51:38) Suction Group Transducer Backup (53:54) Oil Level Sensors (57:09) Adiabatic Pre Cool Sensor 7A (01:01:46) Ambient Sensor 7B Water Control (01:10:27) Dry Gas Cooler TD Sensor Helpful Links & Resources: VIDEO: Watch this seminar on the Refrigeration Mentor YouTube Channel GUIDE: Critical Sensors for CO2 Transcritical Systems Guidance (NASRC) Copeland Website  Andre Patenaude on LinkedIn

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm breaking down 5 core electrical troubleshooting tips to help refrigeration technicians solve issues faster and more confidently. These encompass electrical sequence of operation, checking and verifying voltage, wiring diagrams and using yoru understanding of mechanical problems to uncover the cause of electrical failures.  Electrical systems are so important to understand in refrigeration because this is where techs spend a large amount of time on service calls. In this episode, we discuss: (00:48) Why Refrigeration Electrical Knowledge Matters (01:58) Electrical Sequence Of Operation (04:41) Voltage Testing Basics (08:07) Voltage Drop Tricks (09:01) Tracing Circuits Methodically (11:20) Relationship Between Electrical and Mechanical Problems Helpful Links & Resources: Episode 371. A 6-Step Process for Faster Electrical Troubleshooting Episode 323. Electrical Troubleshooting 101 Episode 296. Electrical Troubleshooting in Refrigeration  

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 how refrigeration technicians and contractors can prepare for the summertime service-call rush. Higher ambient temperatures often make systems run harder, so preparation should start early. In this episode, we'll cover what to check for on the technical side, tips for working smarter, more efficiently, and also planning personal time and maintaining balance between of summer leisure time, long on-call days and prioritizing severe calls.  In this episode, we discuss: (00:48) Summer Rush in Refrigeration (01:44) Pre-summer System Checks (02:46) Heat Related Electrical Failures (03:54) Diagnosing Issues Faster Under Pressure (05:20) Prioritizing Calls On-Call (06:31) Planning Time Off Early (07:23) Packing And Preparing For Long Days (10:47) Refrigeration Preventive Checks (14:04) Using AI in Refrigeration Helpful Links & Resources: Episode 313. Summer Prep Training Episode 318. Designing High Pressure Valves for Summer Heat and Winter Challenges with Chris Griffiths Episode 220. Improving Work-Life Balance (Without Compromising Your Success)

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'll explains how technicians can stand out in refrigeration job interviews. I'll share tips on building confidence, developing a troubleshooting mindset, and communicating technical processes step by step, including fundamentals like superheat, subcooling, wiring diagrams, controls, and compressor diagnostics. Many companies hire for attitude, reliability, and problem-solving more than years of experience, and knowing how to demonstrate work ethic, professionalism, business-minded value and asking strong questions will put you ahead of the pack when it comes to competing for a refrigeration technician job. In this episode, we cover: (00:48) Job Interview Mindset (02:24) Building Trust Through Honesty (04:04) How to Talk Technical Confidently (07:25) Job Interview Preperation (11:39) Communicating Stepwise (15:07) Value of Showing Ambition (19:23) On-Call Work Ethic (25:10) Asking Smart Questions (28:58) Professional Reputation Helpful Links & Resources: Episode 256. Career Tips for New Technicians Episode 224. The Key To Finding New Career Opportunities as a Technician Episode 169: Leadership Insights: Work Ethic and Value Creation with Scott Farley of The Arcticom Group  

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm sharing the top seven basics every supermarket refrigeration technician needs to master. These encompass the fundamentals like superheat, subcooling, compression ratio, refrigerant flow, wiring diagrams, ladder diagrams, P&IDs, refrigeration schedules and sequence of operations. We'll also discuss safe electrical troubleshooting and proper meter use, understanding rack operation and the importance of controls, sensors, and communication networks. Revisiting these basics - no matter how long you'be been in the industry - are crucial to eliminating guesswork, diagnosing issues more confidently, cutting troubleshooting time and reducing callbacks. In this episode, we cover: (00:48) Seven Basics of Supermarket Refrigeration (00:55) Refrigeration Fundamentals (02:09) Electrical Diagrams (04:20) Meter Skills (05:09) Supermarket Rack Operation Basics (06:44) Case Components  (07:17) Refrigeration Controls (11:18) Building Troubleshooting Habits (13:43) Safety on Refrigeration Job Sites Helpful Links & Resources: CO2 Unfiltered Episode 395. Basics of Refrigeration: Importance of Revisiting the Fundamentals Episode 299. Basic Refrigeration 101 Episode 37. Refrigeration Fundamentals and Troubleshooting Training with HVAC Know It All

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 returning to refrigeration fundamentals and breaking down the foundations - compressor, condenser, metering device, evaporator, and refrigerant flow. We cover key checks like suction/discharge behavior, condenser air and pipe temperatures, subcooling, fan operation, TXV function, and calculating superheat to prevent liquid or wet gas returning to the compressor. This episode also includes practical tips from the field, including smarter ways to handle oil checks, condenser coil cleaning techniques, and the importance of reading manuals. It's not all about the high level stuff - mastering the basics is truly the key to building confident refrigeration techs and stronger, less stressed service teams. In this episode, we discuss: (00:48) Refrigeration Basics (01:26) Compressor Fundamentals (03:11) Condenser Temps and Subcooling (04:27) Metering Devices and Superheat (09:08) Field Basics Gauges Oil and Coils (11:33) Manuals and System Checks (13:12) TXV Troubleshooting Steps Helpful Links & Resources: Episode 37. Refrigeration Fundamentals and Troubleshooting Training w/ HVAC Know It All Episode 299. Basic Refrigeration 101 Episode 5. CO2 Refrigeration Fundamentals with James Bailey

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm sharing a consistent set of checkpoints during startup and troubleshooting on condensing units and walk-ins. We walk through key measurements from the compressor through the system, including suction pressure/temperature, discharge temperature, volts/amps, oil temperature, condenser inlet/outlet conditions, receiver inlet/outlet checks, liquid line temperature changes, and evaporator outlet pressure/temperature to verify subcooling and superheat. Write these checkpoints down, learn from other techs, and leverage data to spot trends and root causes to speed up service and reduce callbacks. In this episode, we cover: (01:23) Refrigeration System Checkpoints Overview (02:31) Compressor Baseline Checks (04:42) Condenser Subcooling Checks (07:32) Receiver and Liquid Line (08:24) Evaporator Superheat Checks (09:35) Airflow Defrost and Tools (10:56) Building Your Troubleshooting Framework Helpful Links & Resources: Episode 14. What About Condensers in Refrigeration Applications? Episode 295. A Compressor Story: The Key to Faster Troubleshooting VIDEO: CO2 Unfiltered with Sam Major

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here This conversation is a detailed walkthrough of supermarket refrigeration installation. We cover phases from pre-construction drawings, bidding, ordering, kickoff meetings, and coordination with other trades, through layout before concrete, trench and overhead piping, hangers, brazing with nitrogen purge, section-by-section pressure testing and documentation, and deep/triple evacuation. We'll also discuss commissioning and startup basics, including verifying sensors/controls, charging strategy, oil system checks, staged circuit startup, and final turnover items. In this episode, we cover: (02:48) Why Installation Is Important for Refrigeration Techs to Know (05:01) Preconstruction Drawings and Planning (07:34) Ordering Gear and Timelines (09:16) Kickoff Meetings and Trade Coordination (10:47) Pipe Routes, Trenches and Hangers (15:34) Equipment Placement and Roof Curbs (16:46) Brazing Specs and Rough-In Checks (24:49) Pressure Testing  (26:49) Drains, Walk-In Boxes and Coil Layout (30:56) Hanging Evaporator Coils (32:22) Roof Flashing Tips (34:34) Pressure Test Evac (38:32) Controls Wiring Layout (43:00) Leak Proof Brazing (46:03) Charging (47:50) Oil System Startup (52:57) Final Commission Turnover Helpful Links & Resources: Episode 373. Installation Prep for a CO2 Refrigeration System Episode 160. Things to Know When Installing and Servicing CO2 Refrigeration Systems Episode 81. Challenges Faced When Installing CO2 Systems

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're discussing how refrigeration techs can make the transition from technician to manager, with Todd Ernest, Executive Chairman of Climate Pros. Todd has some great insights on management skills, including technical excellence versus leadership excellence, emotional intelligence and coaching ability. We also dive into honing communication skils, listening, avoiding favorites, delegating instead of doing, and accountability - the softer skills that are critical for technicians who want to make the career jump into management. In this episode, we cover: (05:56) Tech vs Manager Mindset (08:59) Traits of Successful Leaders (09:53) Communication Skills (17:59) New Manager Mistakes (23:58) Delegation in the Field (26:04) Accountability Shift (29:03) Management Reality Checks (29:53) Crucial Conversations Manager Need to Have (31:34) Communication That Lands (33:03) Offering Praise and Listening (37:22) Coaching and Establishing Control (39:23) Learning on the Road  Helpful Links & Resources: Episode 262. Transitioning from Technician to Management Episode 286. Leadership Training for Technicians with Jim Pape of The Arcticom Group BOOK: How to Win Friends and Influence People by Dale Carnegie BOOK: Mindset: The New Psychology of Success by Carol Dweck Follow Todd on LinkedIn

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this second part of a two-part episode, we're diving deep into oil management for CO2 refrigeration systems with Alessandro Silva, Senior Application Engineer at Bitzer. Here, Alessandro covers oil reservoir sizing, common failures and what to look for during maintenance checks and root-cause troubleshooting to help refrigeration techs perform more efficient service calls and be feel more confident in the field. You can also follow along this webinar on our Refrigeration Mentor YouTube Channel here. In this episode, we discuss: (00:58) Flash Gas Bypass Basics (01:47) Oil Reservoir Sizing (03:22) Differential Pressure Range (05:25) Load Changes and Oil Flow (06:28) Parallel Compression Setup (10:44) Ejectors and Subcooling Options (17:41) Low Temp Stage Recovery (23:05) Compressor Data Benchmarks (24:15) Compressor Software Diagnostics (25:45) Low Superheat Fixes (27:05) Stepper Vs Pulse Valves (30:50) Oil Separator Maintenance (33:26) Strainers And Trend Graphs (35:30) Pipe Sizing For Oil Return (37:57) CO2 Refrigeration Market Shift Helpful Links & Resources: Episode 390. CO2 Oil Management (Part 1): Lubrication Basics, Oil Selection, Testing, and Troubleshooting with Alessandro Silva of Bitzer Bitzer Fender Follow Alessandro on LinkedIn

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this first part of a two-part episode, we're diving deep into oil management for CO2 refrigeration systems with Alessandro Silva, Senior Application Engineer at Bitzer. Alessandro covers what technicians, designers, and engineers need to know about oil management, including lubrication systems, oil functions, oil protection, as well as proper tools and gauges, oil level management, controls and a ton of troubleshooting tips for service techs to better understand oil management for CO2 systems. You can also follow along this webinar on our Refrigeration Mentor YouTube Channel here. In this episode, we discuss: (07:49) Lubrication Systems (10:10) Oil Functions and Safety Controls (12:43) Measuring Oil Differential Pressure (13:21) Tools and Safety for CO2 Service (18:07) Oil Grades and Application Ranges (20:22) Oil Circulation Basics (21:46) Choosing CO2 Compressor Oils (22:36) Oil Change Intervals (25:04) Oil Testing Limits (27:12) Acidity And CO2 Degassing (32:20) Basic Oil Management Layout (36:48) Low Pressure Reservoir Setup (38:41) CO2 Cascade And Pumped Systems (40:39) Cascade Heat Exchanger Placement Helpful Links & Resources: Episode 247. Oil Management with Patrick Gregory Episode 11. Bitzer CO2 Compressors with Phil Boudreau Bitzer PV

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're covering the basics of TXV's (thermostatic expansion valves) and superheat with longtime tech, teacher and Refrigeration Mentor Community Ambassador, Andrew Freeburg. We breakdown the purpose of superheat, how to measure it, and variations between different applications and manufacturer specs. We also discuss different supermarket conditions, proper TXV adjustments and service tips every refrigeration technician needs to know to thoroughly understand these important system components.  In this episode, we cover: (02:08) Superheat Basics Explained (04:04) Measuring Superheat (05:25) Target Superheat Ranges (14:19) When To Adjust TXVs (17:32) TXV Types And Selection (19:00) How A TXV Works (25:44) Bulb Placement (28:32) Equalizer Line Placement (29:30) Equalizer Tube Oil Seal Story (31:10) Bulb Mounting and Insulation (37:18) Low Temp Startup and Pull Down (40:35) Cold Capillary Tube Failures (45:04) Refrigerant Glide and Dew Point Helpful Links & Resources: Episode 16. TXV/TEV - A discussion about Thermostatic Expansion Valves Episode 279. CO2 Experts: Superheat - Controls & Common Issues with Chris Griffiths and John Rothery Episode 324.  Using AI To Learn and Troubleshoot Refrigeration Systems Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversiotion, we're walking step-by-step through a compressor change-out from a recent service call with guest and Refrigeration Mentor Community Ambassador, Andrew Freeburg. Andrew covers covering initial safety steps, plus detailed steps for isolating lines, locking out power, shutting off crankcase heaters, recovering refrigerant, and transferring fittings and oil floats. Andrew also shares installation practices and how he traced back the cause of the issue and used that to efficiently solve the problem. This episode is loaded with tips of what to look for, what to do, and things to avoid on these types of service calls. In this episode, we discuss: (02:04) Using AI To Catch Mistakes (03:46) Refrigeration Compressor Failure (04:55) Safe Isolation And Recovery (06:10) Lockout And Removal Steps (11:09) New Compressor Checks (14:14) Gaskets And Reassembly (17:42) Oil Choices And Vacuum (19:03) Torque Specs And Wiring (24:24) Startup And Oil Change (25:57) Copper Plating Evidence (27:20) Valve Plates (31:19) Root Cause Floodback (33:00) Mechanical Controls Limits (34:05) Oil Change Setup (35:52) Nitrogen Push Method (39:23) Draining Compressors (42:30) Oil Pressure Checks (49:18) Moisture Removal Filters Helpful Links & Resources: Follow Andrew on LinkedIn Episode 329. The Ins & Outs of Compressors Episode 295. A Compressor Story: The Key to Faster Troubleshooting Episode 133. Your Compressor Success Guide

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this episode, I'm sharing five things every refrigeration needs to develop to become a more proficient refrigeration professional and advance in your career. Many supermarket refrigeration technicians get stuck second-guessing, spending too long on calls, and relying on constant phone support from lead techs and managers, leading to callbacks and stress. These aren't just technical skills - they include asking better questions, knowing when and what to call about, building field learning habits, learning fundamentals and developing a mindset of constant review, reflection, and teaching. In this episode, we cover: (02:10) Pausing Before Reacting (03:26) Reading Data Like a Pro (04:11) Asking Better Questions (07:21) Building Field Habits (09:12) Knowing Setpoints and Baselines (15:08) Refrigeration Fundamentals and Sequence (17:47) Teaching and Reflecting On Your Work Helpful Links & Resources: Episode 349. How People Develop A "Refrigeration Mindset" pisode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart Episode 274. The Biggest Key To Career Success in Refrigeration

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 breaking down key CO2 piping and installation practices. We cover essentials like correct trapping, suction line slope, proper hanger spacing and planning for expansion on long runs. We also discuss pipe material selection, brazing technique and purging, pressure testing requirements, and installation details across commercial and industrial applications.  In this episode, we cover: (00:43) Why Piping in Refrigeration Matters (02:12) Purging and Brazing Lessons (03:49) CO2 vs HFC Piping Differences (06:39) Traps Slopes and Supports (10:58) Velocity Layout and Expansion (12:45) Piping Material Codes and Alloys (16:55) Pressure Testing and Compliance (18:48) Oil Return Over Pressure Drop (25:17) Piping Insulation Specs and Questions Helpful Links & Resources: Episode 74. Why Understanding Refrigeration Piping Design Is Critical Episode 20. Refrigeration Piping...Who Knew Episode 317. CO2 Piping Design (Tips to Protect Compressors and Prevent Failures) with Chris Griffiths

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're talking supermarket case controllers with longtime refrigeration technician and Refrigeration Mentor Community Ambassador Andrew Freeburg. We cover why they're becoming more common (especially with CO2), and how they compare across brands like Danfoss, Copeland, CAREL, RDM and others. We also break down what case controllers do - running the case by controlling lights, fans, defrost, and electronic expansion valves - along with basic checks and troubleshooting tips to help refrigeration techs be more efficient and confident on service calls. In this episode, we discuss: (02:49) What Refrigeration Case Controllers Do (04:09) Remote Access (05:16) Key Case Controller Sensors and Relays (07:25) Electronic Valve Types (08:29 Sensor Verification (10:00) Programming and Manuals (14:17) Fine Tuning Case Controllers Helpful Links & Resources: Episode 257. CO2 Experts Live: Case Controllers with Kevin Mullis Episode 261. Supermarket Case Controller Troubleshooting Tips Episode 282. Danfoss CO2 Controllers with Dave Yoder

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're joined by Refrigeration Mentor Community Ambassador Andrew Freeberg to discuss why we entered the refrigeration trade. On top of the strong pay potential, we uncover what we truly enjoy about the industry, including the daily variety, challenges, problem solving, helping customers and common misconceptions about on-call and working conditions. We also break down why many supermarket refrigeration technicians feel stuck second-guessing on jobs, which drives callbacks, stress, and constant support calls. This is an inspiring conversation for anyone considering getting into supermarket refrigeration or new techs looking to explore the sky high potential of the refrigeration industry. In this episode, we discuss: (03:14) Realities of On-Calls as a Tradesperson (04:43) Payoff and Lifestyle of a Refrigeration Technician (05:15) Why the Work Stays Fun (06:29) Top Advantages of the Refrigeration Trade (07:19) Advice for New Students (08:16) Refrigeration Wages and Career Math (10:33) Overtime (12:12) Travel Anywhere With Skills (15:47) Skills That Will Change Your Life (19:24) Recruiting the Next Generation of Tradespeople (21:34) Second Career Ageism (25:03) Why Refrigeration Matters (29:30) Trade School vs College (30:56) Different Career Avenues in Refrigeration Helpful Links & Resources: Episode 333. Training and Troubleshooting Tips to Level Up Your Career Episode 274. The Biggest Key To Career Success in Refrigeration Episode 256. Career Tips for New Technicians

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

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 discussing why capable technicians often freeze when they walk into a supermarket rack room and how that hesitation drives long troubleshooting times, constant support calls, and callbacks. We'll talk about what causes overwhelm from complex rack systems, controls, and newer technologies like CO2, and the important fundamentals that are too often missed. Apprenticeships cover only a fraction of what techs need and that one-off training days aren't enough - the key is consistent, repeatable development paths and training to help technicians build rack specialist skills, reduce callbacks, and improve profitability. In this episode, we cover: (00:48) Why Techs Get Stumped on Service Calls (01:48) Complexity Overload (02:38) Apprenticeship Gaps for Tradespeople (06:39) Refrigeration Glide  (07:17) Hot Gas Defrost (13:32) Tips for Hiring New Refrigeration Techs (16:22) CO2 Trend Graphs (20:23) How to Build and Train Refrigeration Rack Specialists Helpful Links & Resources: Episode 299. Basic Refrigeration 101 Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips Episode 215. Understanding Refrigeration System Controls with Larry Herman of Redline Control Design

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're talking with Aria Lucey, whose husband Aiden is a longtime technician and Refrigeration Mentor Community Ambassador, discussing how the demanding refrigeration lifestyle impacts relationships and family. She shares early long-distance relationship stories and long-hour challenges, the need for intentional connection, and the importance of clear, honest communication, rather than assumptions. Aria also shares strategies for handling disagreements, making repairs after conflict, and managing kids while incorporating the demanding, often unpredictable work schedule of a refrigeration technician. In this episode, we cover: (02:49) Long Distance Relationships (05:37) Communication Strategies for Relationships (08:18 Fights with Your Spouse (10:17) Sharing Domestic Respinsibilities (12:33) On-Call Lifestyle for Tradespeople (14:35) Advice For New Relationships (19:58) Balancing Sick Days (25:03) Parental Leave And Family Planning (26:29) Taking Turns Supporting Careers (29:29) Dividing Household Responsibilities (34:51) Explaining On-Call To Kids (37:01) Advice For New Technicians Helpful Links & Resources: Episode 226. How Busy Technicians Can Better Manage Work and Family Life Episode 208. The Personal and Professional Sides of Refrigeration (That You Won't Learn in School) Episode 316. Strategies for Surviving and Thriving On-Call with Aidan Lucey

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, I'm sharing the most important things technicians need to know to become experts at supermarket refrigeration. These include mastering the fundamentals like understanding the piping and instrumentation diagram (P&ID), wiring diagrams, IO schedules, and refrigeration schedules. I also discuss the process I use to help refrigeration technicians level up faster and become confident problem solvers, which in turn dramatically reduces troubleshooting time, cuts down on callbacks, and helps refrigeration techs approach service calls with a completely different mindset.  In this episode, we discuss: (3:10) Diagnosing CO2 gas cooler pressure issues using trend graphs (7:05) How technicians are learning to think differently (11:20) Four key documents every refrigeration tech must understand (16:15) Why data, trend graphs, and valve percentages reveal the real problem (21:30) The problem with traditional training (26:00) Continuous microlearning (31:45) Strong troubleshooting fundamentals (36:30) Building a global community of refrigeration technicians (41:20) How to take on bigger CO2 and supermarket challenges Helpful Links & Resources: Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips Episode 299. Basic Refrigeration 101 Episode 332. 7 Transcritical CO2 Refrigeration Service & Maintenance Tips

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 breaking down how to prevent supermarket callbacks - and why the issue is rarely the rack itself. Callbacks crush margins, burn out technicians, frustrate service managers, and erode customer confidence. It comes down to diagnosing the root cause of issues, which almost always comes back to your process as a refrigeration technician: weak fundamentals, poor understanding of rack sequence of operation, misdiagnosis, and a lack of structured troubleshooting. We also discuss how structured development programs dramatically reduce callbacks, improve technician confidence, and increase gross margins for your company.  In this episode, we cover: (02:45) The cost of refrigeration service callbacks (05:30) Cause of most refrigeration service callbacks (07:45) Weak fundamentals and missing rack sequence of operation steps (10:10) The most common misdiagnoses in supermarket refrigeration (13:20) Why control strategies matter (16:40) The danger of being a "parts changer" (19:30) How expert techs think differently (23:30) How training reduces callbacks and grows better businesses Helpful Links & Resources Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 306. Mastering Supermarket Service Calls with Andrew Freeburg Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips