[F-Gas Category I] 09, Ozone Depletion and Legacy Refrigerants

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How stratospheric ozone protects Earth and how chlorine from CFCs and HCFCs destroys ozone molecules. - The distinction between Ozone Depletion Potential (ODP) and Global Warming Potential (GWP). - Why HFCs have zero ODP despite containing fluorine and having high GWP. - Legal restrictions on legacy refrigerants under the Montreal Protocol and UK regulations. - A simple decision rule to distinguish ozone-depleting substances from fluorinated greenhouse gases. This independent study resource helps candidates prepare for the UK City & Guilds 2079 Category I F-Gas exam. Access practice questions at https://open-exam-prep.com/practice/uk-city-guilds-2079-l2-fgas and watch video tutorials at https://www.youtube.com/@Open-exam-prep . Sources checked: September 28, 2026 - https://www.gov.uk/guidance/fluorinated-gases-f-gases - https://www.gov.uk/guidance/qualifications-required-to-work-on-equipment-containing-f-gas - https://www.cityandguilds.com/qualifications-and-apprenticeships/building-services-industry/refrigeration-and-airconditioning/2079-f-gas-and-ods-regulations