EPA 608 Core — Complete Study Guide
Master every knowledge area tested on the EPA 608 Core exam. Each topic includes verified practice questions, key concepts, and official handbook references.
Ozone Depletion Science
20% of examHow CFCs, HCFCs, and HFCs affect the stratospheric ozone layer. Topics include: chlorine catalytic destruction, UV radiation, ODP values, and the Montreal Protocol.
Clean Air Act & Regulations
25% of examEPA Section 608 regulations governing refrigerant handling. Topics include: venting prohibition dates (July 1992, November 1995), certification types (Type I/II/III/Universal), recordkeeping requirements, and penalties.
Refrigerant Recovery Procedures
30% of examProper techniques for recovering refrigerant from HVAC equipment. Topics include: recovery vs. recycling vs. reclamation definitions, vacuum levels (4 inch Hg, 10 inch Hg, 25mm Hg absolute), recovery equipment certification, and cylinder management.
Refrigerant Types & Chemistry
15% of examClassification and properties of common refrigerants. Topics include: CFCs (R-12), HCFCs (R-22, R-123), HFCs (R-134a, R-410A), HFOs (R-1234yf), zeotropic vs. azeotropic blends, ASHRAE safety classifications (A1, A2L, A3, B1).
Safety & Handling
10% of examSafety procedures when working with refrigerants. Topics include: phosgene gas hazard, cylinder storage and transport (DOT regulations), PPE requirements, confined space safety, nitrogen pressure testing safety.
Ready to Test Your Knowledge?
Start a full mock exam with 25 questions, timed to match the actual EPA 608 Core. All questions verified against official sources.
Start EPA 608 CoreMock Exam →