Other Great Sources

By September 20, 2017

You may not know this, but the HVAC School podcast began before the website. When I started the podcast, I never intended to create a website, but there was more demand for quick tech tips than the podcast could hold. So, we started hvacrschool.com.

In the same way, I never set out to create a podcast network, but here we are. I find that there are more topics than I can fit into one site or podcast, so the Blue Collar Roots Network was born to allow other really smart people to do what they do best. You can still hear the HVAC School podcast in all the usual spots, and it will publish just as often with all the same great types of HVAC/R training topics, but here are some new options for you.

Building HVAC Science is a podcast by Trutech Tools CEO Bill Spohn. The show covers building diagnosis, test and balance, advanced measurement, design, and many other important topics to the trade. The latest episode is on IAQ and you can listen HERE. You can also listen and subscribe HERE.

Service Business Mastery is an in-depth look at what it takes to run a successful service business by successful business owners and managers. The latest episode is on dealing with negative reviews online. You can also listen and subscribe HERE. Service Business Mastery also has a YouTube channel, which you can visit HERE.

The Tools Pros podcast goes deep into all of the tools of the trade with honest reviews, as well as general discussion about uses and applications for tools. The latest episode is on tool bags and vehicle organization. You can also listen and subscribe HERE. The Tool Pros also have a YouTube channel with shorts about different tools, live streams, and other content, which you can visit HERE.

—Bryan

Check out our most recent video

How to Evacuate an AC system, Full Vacuum Procedure

Our latest Podcast

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

Roman Baugh returns to the podcast to talk about the time he installed an A2L system and lived to tell the tale.

Roman used most of his same R-410A tools to install the first A2L-based ductless mini-split in Florida. Flare blocks, wrenches, and torque wrenches will all stay the same; you just have to be sure that your vacuum pumps and recovery machines are rated for use on A2L refrigerants. A2L-based mini-splits use flared fittings with no brazing necessary; this is currently the A1 status quo.

Purging and flowing with nitrogen will be required of A2L systems. Purging refers to a higher flow rate and flowing refers to a very low flow rate (2-5 standard cubic feet per hour). If a pipe may have refrigerant inside of it, we will need to cut the pipe with a copper cutter, not use a torch.

You will need to store A2L refrigerant tanks upright and locked in your van. You’ll want the tanks to avoid being banged around or struck by other objects in the van. Although A2Ls are non-toxic, they still displace oxygen if a valve opens.

Bryan and Roman also discuss:

“Mildly” or “slightly” flammable
Purging vs. flowing nitrogen
Deep evacuation
Flammable substances in the automotive industry
Will there be reverse-threaded connections?
The ever-changing HVAC industry
Lower charge amounts

Resources:

You can learn more about A2L refrigerants in general on the ESCO Institute e-learning network by checking out training courses at https://hvacr.elearn.network/.

Check out Opteon’s new A2L refrigerant, XL41 (R-454B), at https://hvacrschool.com/xl41.

You can find Daikin’s R-32 resources at https://www.r32reasons.com/.

Learn more about the HVACR Training Symposium or buy a virtual ticket today at https://hvacrschool.com/symposium.

If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.

Check out our handy calculators HERE.

Search Episodes

I Installed an A2L and Lived to Tell About It!

06/01/2023

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Motor Speed – Short #164

05/30/2023

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Growing in Productivity and Confidence as a Tech w/ Refrigeration Mentor

05/25/2023

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The Art of Unteaching w/ MeanHVAC

05/18/2023

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Floating vs. Fixed Suction and Head – Short #163

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Humidity Utopia w/ Nikki & Bryan

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What the Flux? – Short #162

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The Impacts of Duct Leakage w/ Steve Rogers

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Why and How to Create an Internal Training Program W/ Eugene S.

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