U.S. Environmental Protection Agency (EPA)
EPA Section 608 Technician Certification
Section 608 of the Clean Air Act requires technicians who maintain, service, repair, or dispose of stationary equipment containing covered refrigerants to pass an EPA-approved test.
This learning path covers what the rule requires, which certification type matches a given piece of equipment, and the core safety and recovery practices the test topics emphasize. It is a study resource, not the certification exam.
Scope: Federal (United States) — no state-specific variant
- One federal credential — there is no separate state license to track.
- The credential is earned through an EPA-approved certifying organization and does not expire.
- The certification type you need is determined by the equipment you work on, not your job title.
Your study path
- Reference
Official references & materials
The EPA pages this path is built from. These open on the EPA site; each shows the date it was last verified.
- Study
Study guide & sessions
Original, sourced lessons covering requirements, certification types, and recovery safety — built for short sessions on a phone.
Start studying → - Practice
Test bank
Authentic, sourced multiple-choice questions organized into test sets. Pick a set and work at your own pace, with an explanation for every answer and results by topic.
Open the test bank →
Certification types
The certification type you need is set by the equipment you work on. This credential is federal (united states) — no state-specific variant.
Core Core knowledge
Foundational ozone, regulation, safety, and recovery material that every certification type builds on.
Type I Small appliances
Servicing small appliances.
Type II High-pressure equipment
High- and very-high-pressure appliances, with stated exceptions.
Type III Low-pressure equipment
Low-pressure appliances such as centrifugal chillers.
Universal All equipment types
Covers Type I, II, and III; the Core test must be taken proctored to count toward Universal.
What you will learn
Who and what the rule covers
Decide when an activity is covered technician work and who must be certified.
Choosing the certification type
Match equipment to Type I, II, III, or Universal certification.
Core safety practices
Apply the personal-protection and cylinder-handling practices the test topics emphasize.
Recovery techniques by system
Adapt the recovery and recharging sequence to high- and low-pressure systems.
How content is sourced and verified is explained on the methodology page.