Chris Harris

I was going through a recorded service meeting with the Kalos techs, and Bert shared something that has been rattling around in my head ever since. His team went digging through their callback data looking for patterns, and after stepping back and looking at it, one showed up that nobody expected: The newer techs were […]

Why is it called single-phase 240 when there are two opposing phases (or legs)? I wondered why we called two 120v opposing legs “single-phase 240” for years. Then someone pointed out to me that a typical “single-phase” pole transformer only has one power leg entering and two coming out. That freaked me out. How can […]

Flowing nitrogen while brazing does not mean the air was cleared first. Learn how to purge large ACR piping, choose a practical regulator setup, and estimate time and cylinder use.

 This podcast episode focuses on the critical shortage of HVACR technicians and installers across the industry. The hosts discuss the massive gap that exists, with estimates of nearly 200,000 open roles expected in the next few years. They are joined by Lenny Diaddario from Copeland’s contractor services department and Chris Harris from the educational […]