How Hose Size Beats Pump Size for HVAC Pros to Get Faster & Deeper Evacuation - Jim Bergmann Part 1

In this episode of the HVAC Know It All Podcast, host Gary McCreadie welcomes Jim Bergmann, President of measureQuick and Director of New Product Development at Redfish Instruments Inc. They talk about the science behind evacuation, the impact of hose size on evacuation speed, and the common misconceptions around pulling a vacuum. Jim explains how using larger hoses and understanding conductant speed can improve evacuation time and performance. They also discuss the effects of temperature on evacuation, particularly in cold climates, and how to prevent moisture buildup in systems. This conversation provides clear insights for HVAC professionals to optimize their evacuation process and avoid common pitfalls.

Jim talks about the science of pulling a vacuum and why the size of hoses matters for faster evacuation. He explains how using larger hoses and understanding conductant speed can reduce evacuation time. Jim also clears up myths about ice forming during evacuation and the impact of cold weather. He stresses that using the right tools, like a good vacuum pump and hoses, can help avoid mistakes and improve system performance.

This episode is full of valuable HVAC tips, explanations of evacuation science, and advice on improving performance with the right tools and techniques, especially in tough conditions.

Expect to Learn:

• How larger hoses and conductant speed can speed up evacuation.

• Why myths about ice and fast evacuation are incorrect.

• The effects of cold weather on evacuation and how to handle it.

• The importance of using the right vacuum pump and tools.

• How can better tools and knowledge improve system performance and save time?

Episode Highlights:

[00:32] - Introduction to Jim Bergmann in Part 01

[02:25] - Discussion on Quarter-Inch Ports and Evacuation Process

[04:08] - Understanding Vacuum Flow and Pressure Dynamics

[05:59] - Vacuum and Friction Impact on Flow Rate

[07:14] - Effect of Schrader Cores on Flow Rate

[09:07] - The Impact of Hose Length on Flow Rate

[10:33] - Misconception About Vacuum Pump Size and Hose Restrictions

[12:23] - Addressing Ice Formation During Evacuation

[17:02] - The Role of Ambient Temperature in Ice Formation

[19:51] - Managing Moisture in Wintertime Service Calls

This Episode is Kindly Sponsored by:

Master: https://www.master.ca/

Cintas: https://www.cintas.com/

Cool Air Products: https://www.coolairproducts.net/

property.com: https://mccreadie.property.com

SupplyHouse: https://www.supplyhouse.com/tm

Use promo code HKIA5 to get 5% off your first order at Supplyhouse!

Follow the Guest Jim Bergmann on:

LinkedIn: https://www.linkedin.com/in/jim-bergmann-2968178/

measureQuick: https://www.linkedin.com/company/measurequick-application/

Redfish Instruments Inc: https://www.linkedin.com/company/redfish-instruments/

Download the measureQuick App here: https://play.google.com/store/apps/details?id=com.measurequick.hv