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, 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  

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 Ambassadors Andrew Freeburg and Erik Holland ot share some call stories from the field, including a severely overheated semi-hermetic compressor teardown. We also walk through safely isolating, recovering, and cleaning or replacing TXV screens/strainers and also common refrigerated case freeze-up causes and defrost strategy. Interested in joining the next Refrigeration Mentor Community Meetup? Click here. In this episode, we cover: (01:56) Copper Plating Moisture Clues (04:32) Oil Color And System Cleanup (08:05) Pumpdown And Screen Cleaning (10:56) Case Freeze Up Root Causes (14:07) Suction Liquid Line Routing Fix (16:12) Airflow Blockage Issues (16:43) Coil Gaps and Bypass (19:00) Defrost Strategy Breakdown (21:05) Humidity and Data Trends (23:19) What Not to Adjust First (24:34) Wild Leg Voltage Explained (27:20) Safety Metering Lessons Helpful Links & Resources: Episode 365. Compressor Inspections and Troubleshooting Stories from the Field Episode 329. The Ins & Outs of Compressors 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 conversation was from our latest Refrigeration Mentor Community Meetup, talking about refrigeration controls and electrical systems with Andrew Freeburg and Erik Holland. We cover control fundamentals such as transformers, multiplex board setup, communication basics, polarity, baud rate, cable practices, and fail-safe settings for loads. We also discuss how to build confidence through competence - studying, repetition, applying skills on real systems, asking questions, using community support, setting goals, and learning by teaching. Interested in joining the next Refrigeration Mentor Community Meetup? Click here. In this episode, we discuss: (00:30) Confidence and Competence (06:02) Learning How to Learn (09:58) Setting Goals and Support Groups (15:42) Dunning Kruger Effect (21:58) Electrical Basics and Safety (22:21) Center Tap Transformers (24:30) Multiplex Boards and Dip Switches (25:59) Binary Addressing Switches (26:37) Power and Comms Terminals (27:11) Comms Voltage and LEDs (29:40) Wiring Noise and Shielding (30:47) Fail Safe Dip Switches (33:46) Analog Inputs and Outputs (34:54) Software vs Hardware Logic (39:06) Panel Safety Basics (43:30) Meter Testing and Ratings (47:47) Electrical Safety Mindset  Helpful Links & Resources: Episode 371. A 6-Step Process for Faster Electrical Troubleshooting 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 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: (0:04) Refrigeration Electrical Troubleshooting Basics (3:24) Understanding Refrigeration Wiring Diagrams (7:20) Electrical Safety (14:09) Resourcefulness in the Field 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  

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 how to build your professional network in the refrigeration industry - connecting with the people, community and mentors you need to know to learn and move up faster. It's not something typically taught in the trades, so this quick episode also covers overcoming resistance, what to do in a negative work environment, and how to develop the mindset necessary for growth and improvement as a refrigeration technician.  In this episode, we cover: -Building community and networking in the trades -Learning from experience -Focusing on proper techniques and practices -Developing the mindset for continuous improvement -Finding the right mentors -How longevity does not always equal proficiency Helpful Links & Resources: Episode 147: Unlocking Success: 5 Steps to Develop a Growth Mindset Episode 342. Refrigeration Troubleshooting Stories with Andrew Freeburg Episode 167: Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we explain PID (Proportional-Integral-Derivative) controllers used in refrigeration systems. This will give refrigeration technicians a pragmatic understanding of PID tuning, plus a procedural checklist before making any adjustments, and lots of tips on how to optimize refrigeration system performance through proper PID tuning.  In this episode, we cover: -PID controllers and their importance in refrigeration  -Explanation of Proportional-Integral-Derivative components  -Manufacturer settings -Tips for fine-tuning electronic expansion valves (EEVs)  -Sensor placement -Stable suction pressure  -PID adjustment checklist  -Steps for tuning PID settings  -Common issues caused by improper PID tuning  -Performance indicators for well-tuned systems  Helpful Links & Resources: Episode 344. Basics of CO2 Controls - Service Calls & Troubleshooting Rack Controllers with Kevin Mullis (Part 4 of 4) Episode 279. CO2 Experts: Superheat - Controls & Common Issues with Chris Griffiths and John Rothery Episode 299. Basic Refrigeration 101  

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 giving you an inside look at the Refrigeration Mentor Playbook - the methodology we use to train and elevate technicians, contractors and the refrigeration industry. The goal is to inspire fellow refrigeration professionals to reap the immense value of continuous learning, and for managers to leverage teaching and mentorship to build stronger teams. Everyday, we see students of our programs achieving business growth and greater customer satisfaction in refrigeration, because they've developed new skills and better work dynamics. That's why we do this at Refrigeration Mentor.  In this episode, we cover: -Importance of training and mentorship -Developing effective training programs -Core training programs at Refrigeration Mentor -Building customized training programs -Understanding equipment and engineering -Impact of effective training -Role of safety in training Helpful Links & Resources: Episode 65. Motivation, Mindset and Mentorship Episode 139. 7 Tips For Building Good Training And Development Habits Episode 167. Why Mentors Play a Key Role in Your Refrigeration Journey with Bill Zoren Key Mechanical  

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 blending personal and technical development, focusing on how AI can be effectively used for troubleshooting and learning. It takes an investment of both time and money into personal growth - setting career goals, attending training sessions, and developing strong communication within teams. This conversation is loaded with strategies for technicians looking to advance in their careers and take a proactive approach to self-improvement and professional development. In this episode, we cover: -The impact of refrigeration on everyday life -Attending industry events and learning from technicians -Using AI in refrigeration troubleshooting -Value of training and personal investment -Building confidence  -Career growth in the trades -The power of setting goals -The future of refrigeration Helpful Links & Resources: Episode 352. AI and New Refrigeration Training & Troubleshooting Resources Episode 338. Professional Development Tools & Resources in Refrigeration Episode 256. Career Tips for New Technicians  

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 diving deep into TX (Thermal Expansion) valves.  We got a lot of more electronic valves coming, stepper valves, pulse valves etc. out there, and getting a good understanding of the different kinds TX valves and how they work is critical for refrigeration technicians to be able to setup and troubleshoot more efficiently. We cover common issues and troubleshooting tips, including how to adjust superheat, the impact of liquid temperature on TX valve sizing, and the various factors to consider before adjusting or replacing TX valves.  In this episode, we discuss: -Understanding TX valves -Superheat and compressor management -Refrigerant injection and cooling techniques -Importance of liquid temperature -Sizing and testing TX valves -Troubleshooting TX valves -Comprehensive system analysis -Practical tips and community insights Helpful Links & Resources: Episode 16. TXV/TEV - A discussion about Thermostatic Expansion Valves Episode 326. Mastering A2L TX Valves with Jamie Kitchen of Danfoss Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4)  

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses This episode is from one of our regular Refrigeration Mentor Community meetups with fellow technicians. We discuss a range of topics like E3 training controllers, compressor issues, inspection cylinders, and the use of AI in troubleshooting. We also cover a list of events for refrigeration technicians to check out, share some wins and stories from the field, as well as some resources the techs on the call have found useful of late. These Community Meetups open forum and we host these regularly - if you'd like in on the next one, be sure to join the Refrigeration Mentor Community Hub. In this conversation, we discuss: -New CO2 Controller Challenge -AI in refrigeration -E3 controller training and licensing -Inspecting cylinders -Compressor issues and solutions -Oil and refrigerant retrofit -Diagnosing blow-by -Checking valve plates and wrist pins -Job interviews  - Using AI in troubleshooting Helpful links & Resources: Episode 350. Supermarket Refrigeration Tips and Tricks with Robert Ochs Episode 344. Basics of CO2 Controls - Service Calls & Troubleshooting Rack Controllers with Kevin Mullis (Part 4 of 4) Episode 115: Understanding Compressors: What You Need To Know FMI (Food Industry Association) Events RETA Conference  

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 Frank Croak, EMS Manager at Climate Pros, about the shift from mechanical to electronic refrigeration controls. Frank offers valuable advice for technicians on both the technical side and why keeping up with technology can help you advance in today's refrigeration field. We also discuss the impact of CO2 on the industry, the role of AI in predictive analytics, and the need for technicians to develop strong mechanical and control system knowledge. In this conversation, we cover: -Evolution of controls in refrigeration -The shift to CO2 and its challenges -Value of hands-on experience -Technological advancements in refrigeration -Balancing work and personal life in the trades -Tips for technicians transitioning to controls -Understanding the basics of heat movement -Electrical troubleshooting -Mentoring and coaching in refrigeration -Effective communication and accountability -Setting goals and continuous learning Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 336. Fast Track to Learning Electronic Valves & Controllers Episode 261. Supermarket Case Controller Troubleshooting Tips Connect with Frank on LinkedIn FMI (Food Industry Association) Events Climate Pros  

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 digging into some tips and tricks for supermarket refrigeration with Rob Ochs, longtime refrigeration industry veteran. We'll delve into understanding and optimizing superheat, troubleshooting common issues, and the importance of proper maintenance and recommissioning. Rob also has some awesome tips for setting superheat correctly, checking compressor superheat, handling different refrigerant systems, and addressing common problems encountered with rack systems. This episode is filled with practical advice and tips for refrigeration technicians aiming to elevate their expertise and efficiency. In this episode, we cover: -Understanding superheat and compressor mechanics -Rack refrigeration challenges -Defrost systems and troubleshooting -Superheat and subcooling strategies -Recommissioning and maintenance tips -Importance of individual compressor checks -Discharge superheat: manufacturer differences -Compressor design and liquid injection -Setting superheat for different run lengths -Environmental conditions and system efficiency -Logging and tracking superheat -Superheat adjustments and troubleshooting Helpful Links & Resources: Episode 271. The Inspiring Refrigeration Journey of Robert Ochs Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg Episode 306. Mastering Supermarket Service Calls 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 talking about developing a "refrigeration mindset" for truly advancing your career. This was the topic of a recent keynote I delivered at a recent Refrigerating Engineers and Technicians Association (RETA) event, which highlighted 3 core components: goal setting, accountability, and continuous learning. These are skills outside of the day-to-day technical skills that every successful refrigeration professional has developed and harnessed to make massive career moves. If you're curious about what that mindset truly means and how to develop it for yourself, this a conversation you'll want to get in on. In this episode, we discuss:  -Goal Setting  -Attending industry events -Developing a "refrigeration mindset" -Continuous learning in the trades -Challenges and opportunities in refrigeration -Investing in training and networking -Importance of mentorship and community Helpful Links & Resources: Episode 113: 5 Tips on Developing a Growth Mindset Episode 147: Unlocking Success: 5 Steps to Develop a Growth Mindset Episode 214. How to Develop the Right Mindset for Success Refrigerating Engineers and Technicians Association (RETA)  

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 key tips and strategies that are guaranteed to make you a better refrigeration professional. These include blending the hard skills of the day-to-day job, along with the softer skills that will help you meet the people and acquire the knowledge to move up in the refrigeration industry. Learning things like preventive maintenance, innovative technologies for CO2 systems, even understanding refrigerant regulations. I'll also share a list of recommended networking events to help you learn, connect and uplift the refrigeration industry as a whole.  In this episode, we discuss: -Refrigerant regulations and industry trends -CO2 strategies and design courses -Importance of preventative maintenance -Attending industry events -Handling the skilled trade shortage -Promoting the refrigeration industry externally -Technician training and success stories -Overcoming industry challenges -Promoting the refrigeration industry -Event highlights and networking -Upcoming events and opportunities Helpful Links & Resources: Episode 216. How to Become a Better Technician By Creating More Value Episode 228. Tips for Faster Service Calls & Better Time Management Chillventa (Oct 13-15, 2026) North American Sustainable Refrigeration Council (NASRC) Events HVAC/R Symposium (Jan 22-23, 2026) Refrigerating Engineers and Technicians Association (RETA) AHR Expo (Feb 2-4 2026) EuroShop (Feb 22-26, 2026)