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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A Tale of Two Latents

When the quiz or the teacher asks what “latent” heat is, there is generally some reference to it being hidden heat, which is what the word “latent” means. We then learn that it is heat energy transferred that results in a change of state rather than a temperature change. Later on, we hear a lot […]

Solving Subcool

I teamed up with Ty Branaman to design an intuitive way for techs to solve some of the “what should it be?” questions in the HVAC field. The topic for this sheet is subcooling. Subcooling is a measurement of the temperature DECREASE of a liquid below its saturation (mixed liquid/vapor) temperature at a given pressure. […]

Contactor Alternatives and Upgrades

Our HVAC equipment can’t run without the contactor coil, but contactors can develop problems with age and during high-voltage electrical events. Contact pitting is unmistakable, and it’s unfortunately all too common in areas where bugs can get into the coil and fry on the contacts. Factor in problems with the utility, such as brownouts and […]

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 […]