Tune in to the best podcast in the cooling industry. Join host Jamie Kitchen who will cover a wide range of HVAC-R topics, from hands-on tips to general industry trends. You’ll learn how to save time on startup & commissioning, reduce call backs and get the best performance from a system. Want to find out if your airflow is correct or how to determinet quickly? You’ve come to the right place.
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In this episode of “Taking the Temperature of HVAC,” Jamie Kitchen is joined by John Broughton and Jörg Saar to swap their strangest refrigeration and HVAC stories from the field—from diagnosing systems by sound and touch, to mystery refrigerants, water-filled chillers, oversized solenoid valves, and wildly improvised installations. Along the way they revisit old-school practices with legacy…
In this episode of Taking the Temperature of HVAC, Jamie Kitchen sits down with John and Jorg to unpack the real-world differences between TXVs (thermal expansion valves) and EEVs (electronic/electric expansion valves) in commercial refrigeration and air conditioning. They break down how each valve controls superheat, the balance of forces inside a TXV, and why concepts like pump down, minimum…
Oversizing HVAC and refrigeration equipment might seem like the “safe” choice—but it can quietly destroy efficiency, product quality, and component life. In this episode of Taking the Temperature of HVACR, Jamie Kitchen, John Broughton, and Jörg Saar discuss how to properly size compressors, evaporators, condensers, valves, and piping; what really happens when systems are too big or too small; and…
In this episode of Taking the Temperature of HVACR, Jamie Kitchen is joined by John Broughton and Jorg Saar to break down the essentials of cold rooms, walk-in boxes, and refrigeration design, covering everything from the difference between holding and blast freezing, to airflow, evaporator placement, refrigerant choices, safety considerations, defrost strategies, and practical installation…
In this episode of Taking the Temperature of HVAC, Jamie Kitchen sits down with John Broughton and Jorg Saar to explore the fascinating history of refrigerants—from harvested ice, water, ammonia, and CO2 to CFCs, HCFCs, HFCs, and today’s low-GWP alternatives. The conversation traces how refrigeration evolved from ice houses and early evaporative cooling to mechanical systems in homes, factories,…
In this episode of Taking the Temperature of HVACR, host Jamie Kitchen joins Jorg and John to discuss how supermarkets can reclaim “waste heat” from their refrigeration systems to tackle humidity issues (foggy glass doors, dripping condensate, slippery floors) while improving comfort and efficiency. They explain how compressor heat can be reused for reheat during dehumidification, domestic hot…
Host Jamie Kitchen and guest Jorg Saar compare CO₂ with A2L/HFO-HFC blends and A3 options like propane (R290), explaining why CO₂ isn’t new, what transcritical operation means, and why CO₂ can excel at heat recovery (especially in supermarkets). They also cover the tradeoffs—high pressures and added complexity for CO₂ versus flammability considerations for A2Ls/hydrocarbons—concluding there’s no…
In this episode of Taking the Temperature on HVAC/R, host Jamie Kitchen talks with Jason Kollman (Danfoss Turbocor®) about what makes oil-free, magnetic-bearing centrifugal compressors unique—from Turbocor’s origins to how the “computer-like” compressor design delivers high efficiency, stable performance over time, and low maintenance. They cover real-world application and commissioning…
In this episode, our host, Jamie Kitchen sits down with Jorg and John to unpack the real difference between pressure controls and pressure safety devices in HVACR. From fan cycling and pump-down controls to high-pressure cut-outs and manual resets, they share real-world stories from the field—what fails, why it fails, and how proper controls and safety can prevent expensive damage and dangerous…
Host Jamie Kitchen welcomes product expert Christina Kjar to discuss how individual room controls are transforming the way we heat our homes and buildings. They dive into the differences between mechanical and electronic thermostatic radiator valves, the growing role of underfloor heating, and the real-world benefits of balanced, efficient systems. Discover why personalized comfort isn’t just a…
