Dr. Chuck Allgood Archives

Dr. Chuck Allgood

Company name: The Chemours Company

Position: Technical Fellow

Dr. Chuck Allgood is a chemist of over 30 years who works with the Chemours Company as a technical fellow and technology leader. He focuses on the development of low-GWP refrigerants and educates industry professionals about A2L refrigerants and the changing regulatory landscape. He films short informational videos on his “Checkup with Dr. Chuck” series on YouTube and the HVACR Learning Network.

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Sight Glass / Moisture Indicator

Often in commercial HVAC and refrigeration, you'll come across a sight glass/moisture indicator on the liquid line. (Oil sight glasses also exist, but those are different from what I'm talking about today.) Sight Glass The sight glass portion is simple; it's just there to show if the liquid line has a full line of liquid […]

Lockout/Tagout (LOTO) Basics

DISCLAIMER: HVAC School is NOT an official OSHA safety training resource! Although we provide safety tips in good faith, our website is not a substitute for safety training from an authorized OSHA training source. Locking out and tagging equipment is one of the most basic safety procedures in general industry and maintenance work, especially in […]

Properly Deburring (Reaming)

Deburring copper tubing (often called reaming) is the practice of running a blade around the inside of tubing after you cut it to remove the burr edge from the inside. It's an important practice and should be performed whenever possible. Deburring reduces turbulence inside the lines, as burrs can cause turbulence. HOWEVER… YOU MUST […]

Flammable Refrigerant Update

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ABC’s of New A2Ls w/ Opteon

Flammable Refrigerant Update

Refrigerants of the Past & Future with Dr. Chuck & Brandon Marshall LIVE

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A2L Update With Chemours Live from AHR

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 energy than propane or butane. The […]