Environment & HVAC · Unofficial practice
EPA Section 608 Technician Certification practice questions
Free EPA Section 608 practice questions for the Core, Type I, Type II and Type III tests. Every answer cites the regulation, statute or EPA page that settles it.
Last updated · 127 questions in 5 chapters
Exam at a glance
If you service, repair or dispose of refrigeration or air-conditioning equipment in the United States, the Clean Air Act requires you to hold Section 608 Technician Certification. EPA's rules in 40 CFR Part 82, Subpart F set out who must be certified, how refrigerant must be recovered before equipment is opened or scrapped, which recovery machines may be used, how leaks in larger systems must be repaired, and who may buy refrigerant.
The certification test is built from an EPA question bank in four groups. Everyone takes the Core group, which covers ozone depletion, the Clean Air Act and the Montreal Protocol, the Section 608 regulations, substitute refrigerants and oils, the refrigeration cycle, recovery, evacuation, safety and shipping. You then add the technical group for the equipment you work on: Type I for small appliances, Type II for high-pressure equipment, Type III for low-pressure equipment, or all three for Universal certification.
These practice questions are written from the federal rules themselves (EPA's rules in 40 CFR, plus the DOT and OSHA rules on cylinders and workplace safety) and from EPA's own pages and publications. Under every answer you will find the regulation, statute or EPA page that settles it, with the deciding sentence quoted word for word, so you learn the requirement and where it is written. Chapters follow EPA's published test topics, and each chapter tracks your progress with a belt that darkens as you master its questions.
Practice by topic
Chapters
Each chapter follows one area of the official exam outline. Your belt for a chapter rises as you answer its questions correctly twice in a row.
Core: Ozone, Law & Regulations
EPA 608 Core practice questions on ozone depletion, the CFC and HCFC phaseouts, the venting ban, refrigerant sales, technician types and the three Rs.
27 questions White belt 02Core: Refrigerants, Recovery & Safety
EPA 608 Core practice questions on substitute refrigerants and oils, recovery, leak detection, evacuation, cylinder safety and DOT shipping rules.
27 questions White belt 03Type I: Small Appliances
EPA 608 Type I practice questions on small appliances: recovery levels, passive recovery, access fittings, recovery equipment, disposal and mail-in Type I tests.
22 questions White belt 04Type II: High-Pressure Appliances
EPA 608 Type II practice questions on leak detection, ODS and HFC leak repair rules, evacuation levels for high-pressure appliances and recovery practices.
26 questions White belt 05Type III: Low-Pressure Appliances
EPA 608 Type III practice questions on low-pressure chillers: 25 mm Hg evacuation, 0 psig non-major repairs, ODS and HFC leak repair rules and purged refrigerant.
25 questions White beltOfficial exam outline
What the exam covers
Mapped from EPA — Section 608 Technician Certification: Test Topics (EPA web page, last updated December 5, 2025, checked Nov 9, 2026).
| Area | Topic | Share of exam | Practice |
|---|---|---|---|
| CORE | Core — ozone depletion, Clean Air Act and Montreal Protocol, Section 608 regulations, substitutes and oils, refrigeration, the three Rs, recovery, dehydration, safety and shipping | — | Core: Ozone, Law & Regulations Core: Refrigerants, Recovery & Safety |
| T1 | Type I — small appliances | — | Type I: Small Appliances |
| T2 | Type II — high-pressure appliances | — | Type II: High-Pressure Appliances |
| T3 | Type III — low-pressure appliances | — | Type III: Low-Pressure Appliances |
Straight answers
EPA 608 questions people ask
Who needs EPA Section 608 certification?
Technicians who maintain, service, repair or dispose of equipment that could release refrigerant into the atmosphere. EPA's rules define a technician by the work done — for example attaching and detaching hoses and gauges to measure pressure, or adding refrigerant to or removing it from an appliance. Apprentices are exempt while they are closely and continually supervised by a certified technician.
Source: Section 608 Technician Certification Requirements, Requirements
What are the four types of Section 608 certification?
Type I for servicing small appliances; Type II for servicing or disposing of high- or very high-pressure appliances (except small appliances and motor vehicle air conditioners); Type III for servicing or disposing of low-pressure appliances; and Universal for servicing all types of equipment.
Source: Section 608 Technician Certification Requirements, Types of Certifications
What score do you need to pass the EPA 608 test?
70 percent on the closed-book Type I, Type II, Type III and Universal tests. A Type I test taken in the mail-in format needs 84 percent.
Source: 40 CFR Part 82, Subpart F, Appendix D — Standards for Becoming a Certifying Program for Technicians, Appendix D to Subpart F of Part 82
Does Section 608 certification expire?
No. EPA states that Section 608 Technician Certification credentials do not expire.
Source: Section 608 Technician Certification Requirements, Requirements
Can an open-book Core test count toward Universal certification?
No. EPA says a Core test taken as an open-book exam cannot be used for Universal certification; the Core test must be taken as a proctored exam to attain Universal.
Source: Section 608 Technician Certification Requirements, Requirements
Exam Kata is independent. EPA Section 608 Technician Certification is administered by U.S. Environmental Protection Agency; we are not affiliated with or endorsed by them. Always confirm requirements on the official site.