# John Broughton

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From ice harvesting to Low-GWP refrigerants

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 refrigerat…

Walk-in refrigeration systems explained

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 placeme…

5/17/26. Wikipedia: The Missing Manual

From 2008- John Broughton, author of "Wikipedia: The Missing Manual." This book was published at a time when Wikipedia was a relatively new addition to the internet, and many people were still unsure of what it was and how it functioned.

The hidden costs of oversized HVAC equipment

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, evapor…

Stranger Things: HVAC edition

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, a…