Official EPA 608 Resources
608 Study Buddy is a practice tool, not an official source. The links below point to the U.S. Environmental Protection Agency and other authoritative references. When the rules matter — for a job, an inspection, or final exam preparation — always go to the official material. This page is here so you can find it quickly.
For our own plain-language walk-through of the regulation, see the EPA Section 608 regulation guide. For a faster study lookup, use the sourced recovery and evacuation levels reference.
The Regulation Itself
- 40 CFR Part 82, Subpart F — the federal regulation that governs refrigerant recovery, recycling, leak repair, and technician certification. Read the current official text on the Electronic Code of Federal Regulations at ecfr.gov.
- Clean Air Act, Section 608 — the section of the Clean Air Act that authorizes the refrigerant management program.
EPA Section 608 Program Pages
- EPA Section 608 Technician Certification — the main hub for the certification program.
- Stationary Refrigeration Leak Repair Requirements — official detail on leak rates, repair timelines, and verification.
- Stationary Refrigeration Service Practice Requirements — EPA's current evacuation table, small-appliance recovery conditions, and limited exceptions.
- Regulatory Updates to the Section 608 Refrigerant Management Regulations — a running summary of rule changes.
HFC Phasedown and the AIM Act
- Hydrofluorocarbons (HFCs) — EPA's current hub for the American Innovation and Manufacturing (AIM) Act.
- Frequent Questions on the HFC Phasedown — plain answers about the phasedown program.
- Regulatory Actions for Technology Transitions — the rules limiting refrigerant GWP in new equipment.
- Resources for Managing HFC Use and Reuse — current EPA fact sheets for HFC leak repair, reclamation, automatic leak detection, and fire-suppression requirements.
608 Study Buddy Visual References
- HVAC duct size and room airflow planner — divide known airflow among editable rooms, compare preliminary round branches, and animate the conceptual duct map.
- Indoor air-handler component lab — trace return and supply air, low-side refrigerant, and condensate through a realistic assembled, cutaway, or exploded indoor unit.
- Air-cooled condensing-unit component lab — open, separate, and zoom into a realistic outdoor unit while tracing airflow and refrigerant flow.
- Recovery and evacuation levels — interactive lookup, animated Type I 80/90 decision visual, complete table, and current primary sources.
- Recover vs. recycle vs. reclaim — visual decision guide for the action, purity, and ownership clues that distinguish the terms.
- Refrigeration cycle animation — follow pressure, state, heat absorption, and heat rejection through all four components.
- Recovery equipment comparison — see what powers system-dependent and self-contained recovery.
- Liquid-to-vapor recovery sequence — move the bulk charge, recover the remaining vapor, then check for pressure rebound.
- Low-pressure chiller sequence — recover, protect the water circuit, and recharge in the safe order.
- 2026 leak-repair rule map — separate the Section 608 and AIM Act paths before choosing the 10%, 20%, or 30% rate.
Taking the Exam
- EPA-approved certifying organizations — the EPA does not give the exam itself. It is administered by approved organizations. Use the EPA's current list of approved Section 608 testing programs to verify a provider.
- Online training and testing through SkillCat — SkillCat appears on the EPA list as an approved online testing provider. It also offers additional training, study guides, and practice tests. See its current EPA 608 training and official exam information. 608 Study Buddy is not affiliated with SkillCat; confirm current pricing, requirements, and proctoring rules directly with the provider.
Refrigerant Safety
- Safety Data Sheets (SDS) — always review the SDS for the specific refrigerant you are handling, available from the refrigerant manufacturer.
- A2L refrigerant safety — for newer mildly flammable refrigerants, follow the equipment manufacturer's service literature and current safety standards. See our AIM Act guide for background.
A Note on Accuracy
External links can move or change, and regulations are updated over time. If you find a broken link or out-of-date information on this page, please tell us at 608studybuddy@proton.me so we can fix it. 608 Study Buddy is not affiliated with the EPA and does not control these external sites.
Not affiliated with the EPA. For study practice only. Always verify current rules with official EPA materials and your testing provider.