Don Gillis
Company name: The Chemours Company
Position: Technical Trainer

Don Gillis is a technical trainer at Chemours. Prior to his work with Chemours, he was a training specialist and HVACR instructor for Copeland. He has over 30 years of experience in the industry, having been an installer, sales and service manager, and service technician. Don has written several tech tips for HVAC School and is a familiar face at the HVACR Training Symposium.

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Tech Tips written:

The One Duct Leak You Didn’t Expect
By:Matthew BrunerSometimes, you just get lucky. Sometimes, you get sent out to install a unit in a closet! Although these types of installs have their challenges, at least for me, they have appeared easier on the surface. There is no return ductwork, as the unit sits on a platform. We are rarely disconnecting ducts in […]
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Static Pressure, Manometers, and Magnehelics
By:Bryan Orr When you start talking airflow, it can get pretty in-depth pretty quickly. There is a big gap between what is useful for the average tech to apply every day and the whole story, so let's start with the simplest part to understand: static pressure. Static pressure is simply the force exerted in all […]
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HVAC Moneyball: Could It Work?
By:Tim De StasioThis tech tip was submitted by Tim De Stasio. He originally published it on his website, which you can visit HERE. Thanks, Tim! Winning takes strategy and the right information. The HVAC business is no different.  But what information should we collect, even pay for, to get better and win? What if these […]
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Event speaker:

What You Need to Know About Future A2Ls
By:Don GillisChristian Pyles NOTE: If you cannot view the recording, the video may still be processing. The maximum wait time is 24 hours. We apologize for the delay and appreciate your patience.
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Flammable Refrigerant Update
By:Don GillisJason ObrzutDr. Chuck Allgood
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Video guest:

Flammable Refrigerant Update
By:Don GillisJason ObrzutDr. Chuck Allgood
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Podcast guest:

A2L Update With Chemours Live from AHR
By:Nathan OrrDon GillisDr. Chuck AllgoodAdam Mufich  Don Gillis and Dr. Chuck Allgood from Chemours join the show to discuss their new easy as “1,2,3” branding around the A2L refrigerants R454A, R454B, and R454C. They explain that A2Ls are not actually flammable like hydrocarbons; they are just mildly combustible with much lower burning velocity and […]
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Intro to CO2 w/ Don Gillis
By:Don GillisBryan Orr Don Gillis with Emerson joins us on the podcast to teach us the basics of CO2 as a refrigerant. He explains how it works and its applications. Carbon dioxide is a colorless, odorless gas that is becoming an important refrigerant for commercial refrigeration (R-744). It is desirable because it has a low […]
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