The Refrigeration Mentor Podcast

Author: Trevor Matthews

This podcast is all about training, education and mentorship for commercial refrigeration and HVAC professionals. My goal to help you develop your knowledge and skills, to master the art of refrigeration. I will have expert guests from around the world joining us. We will have different conversations on technical topic's like system troubleshooting, supermarket refrigeration and CO2 refrigeration. Featuring technicians and engineers to manufacturers and many other industry expert join us to share their knowledge and wisdom. I will have conversations about mental health, mindset, and personal and professional development. My goal is to help you become 1% better than yesterday. Let's get a conversation going!
Be a guest on this podcast

Language: en

Genres: Business, Careers, Education

Contact email: Get it

Feed URL: Get it

iTunes ID: Get it

Get all podcast data

Listen Now...

Episode 389. TXV & Superheat 101 with Andrew Freeburg
Friday, 17 April, 2026

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