Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.
Refrigerants are classified by chemical family, pressure characteristics, ODP (Ozone Depletion Potential), and GWP (Global Warming Potential). Modern EPA focus emphasizes low-ODP and lower-GWP alternatives.
Key comparisons: • R-22: HCFC, phased out (high ODP) • R-410A: HFC blend, higher pressure than R-22, zero ODP but higher GWP • A2L refrigerants: mildly flammable, lower GWP replacements emerging
Related: NATE: EPA 608 Core Concepts - Sections, Types and Responsibilities
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.