EPA 608 Prep 25, Why R-410A Cannot Replace R-22 in Older Systems

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: - Why R-410A's operating pressure is 50-70% higher and poses a rupture risk to R-22 components. - The critical incompatibility between R-22's mineral oil and R-410A's synthetic POE oil. - Why POE oil's hygroscopic nature (moisture absorption) is a key service consideration. - That metering devices are specifically calibrated and not interchangeable between the two refrigerants. - A mnemonic to remember the key issues: P.O.P. (Pressure, Oil, Parts). For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep