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HVAC School - For Techs, By Techs

Nov 27, 2017

Jamie Kitchen from Danfoss talks all about variable-speed motor technology. He discusses why those motors exist, what they do, and how to think differently about the future of HVAC/R.

Most techs think about variable-speed motors as the X13 and ECM blowers in residential applications. Those motors can adjust...

Nov 23, 2017

Jack Rise returns to the podcast to share some duct design facts with us and talk about his Manual D book on the ACCA website.

Before we can even start thinking about duct design, we need to think about the total effective length; even before that, we also need to think about finding the critical path. The critical path...

Nov 17, 2017

Nate Adams joins the podcast to describe the method behind his madness of removing gas meters and installing heat pumps in Ohio. Nate is in the home performance business, and he focuses on its intersection with the HVAC industry

We typically find heat pumps in milder climates, so removing gas meters and replacing them...

Nov 13, 2017

Bill Johnson is one of the great educators and writers of our time in HVAC/R. In this podcast episode, he shares some information about his career and some of his top tips on keeping systems leak-free.

Bill began his work on leak-free solutions by using Glyptal on centrifugal compressors. The Glyptal would harden around...

Nov 9, 2017

Jim takes us all the way through the history of furnaces, from the Stone Age when he was a child to modern modulating condensing types.

The goal of a furnace is to move heat, so a furnace uses heat exchangers to facilitate heat transfer. Furnaces have primary and secondary air. The primary air goes through the burner,...