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:

Universal Condenser Fan Wiring Options
By:JD Kelly Assessing the Situation It is fairly common for a service technician to come across a failed condenser fan motor in the field. It doesn’t matter if we are talking about really old or fairly new equipment—condenser fan motors sometimes fail. The issue is deciding whether to use an OEM (Original Equipment Manufacturer) or […]
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New A2L Refrigerants – “Easy as ABC”
By:Dr. Chuck AllgoodThis tech tip was written by Dr. Chuck Allgood with Chemours. Thanks, Dr. Chuck! While the ever-evolving world of refrigerants can often seem overwhelming with what seems like a never-ending parade of new gases being developed, taking a simplified approach may help clear the clutter. It can be as easy as A, B, […]
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Combustion Testing Doesn’t Stop in the Summer
By:Casey ContrerasThis tech tip was written by Casey Contreras. Casey is a field coach and instructor for the National Comfort Institute (NCI). Thanks, Casey! As HVAC technicians, our careers often focus on either cooling or heating. Because of this split view, we typically ignore gas-fired appliances during the cooling season. There are dangers lurking in […]
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Event speaker:

What You Need to Know About Future A2Ls
By:Christian PylesDon Gillis 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 GillisDr. Chuck AllgoodJason Obrzut
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Podcast guest:

A2L Update With Chemours Live from AHR
By:Nathan OrrAdam MufichDr. Chuck AllgoodDon Gillis  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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