What’s the dark side of air conditioning?

Could a cheaper, more environmentally friendly refrigerant already exist, and could corporate lobbying be helping keep it out of American air conditioners? Why did the chemicals once hailed as safe alternatives become environmental villains, and are their replacements actually much better? Melissa and Jam follow the twisty history of Freon, ozone depletion, greenhouse gases, propane, and air-conditioning regulations to find out why choosing a refrigerant is never as simple as “this one works.” Grab your red string and conspiracy board, because the chemistry drama is heating up. **[Support this podcast on Patreon](http://patreon.com/chemforyourlife " Support this podcast on Patreon ") [Buy Podcast Merch and Apparel](http://chemforyourlife.com/store " Support this podcast on Patreon ")** Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife **Timestamps** 00:00 — The chemistry and drama hiding inside refrigerants 02:31 — Is propane an ideal refrigerant? 05:37 — How an AC episode became an eight-hour research rabbit hole 09:57 — What makes a good—and safe—refrigerant? 11:19 — The hazardous chemicals used in early refrigeration 12:08 — The invention of Freon and chlorofluorocarbons 13:18 — How CFCs damage the ozone layer 16:40 — The Montreal Protocol and the next generation of refrigerants 18:08 — Solving ozone depletion while worsening global warming 22:24 — Why isn’t propane widely used in American air conditioners? 25:35 — How US refrigerant regulations differ from international standards 29:02 — The document requesting government protection for synthetic refrigerants 40:42 — What conspiracy theories might actually be true? 50:00 — Coming next: the surprisingly cool science of swamp coolers **References from the Episode:** **Thanks to our monthly supporters** Sara Hull Dog Day Dan Bri . Summer Alden Amanda Raymond Kyle McCray Justine Ash Vince W Julie S. Heather Ragusa Autoclave Dorien VD Scott Beyer Jessie Reder J0HNTR0Y Cullyn R Erica Bee Elizabeth P Rachel Reina Letila Katrina Barnum-Huckins Suzanne Phillips Venus Rebholz Jacob Taber Brian Kimball Kristina Gotfredsen Timothy Parker Steven Boyles Chris Skupien Chelsea B Avishai Barnoy Hunter Reardon **[Support this podcast on Patreon](http://patreon.com/chemforyourlife " Support this podcast on Patreon ") [Buy Podcast Merch and Apparel](http://chemforyourlife.com/store " Support this podcast on Patreon ")** Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.