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EPA 608 Universal Study Guide (2026) — Core + Type I/II/III, with the 2027 A2L update

From January 1, 2027, EPA-approved certifiers accept only exams from the revised Section 608 question bank, which adds A2L and A3 refrigerants such as R-32 and R-454B (ACHR News, September 19, 2026). This guide covers both, with the evacuation table as 40 CFR §82.156 states it today. Core plus Type I (small appliances), Type II (medium-, high- and very-high-pressure) and Type III (low-pressure), a chapter on A2L and A3 refrigerants, the 30/20/10% leak-repair triggers, and cylinder and recordkeeping rules — then a 100-question Universal practice exam, 25 per section and scored per section, with explanations citing 40 CFR. Independent study aid. PDF + EPUB.

EPA Section 608 Certification — Cheat Sheet (2026)

A printable colour cheat sheet for the EPA Section 608 Certification exam, laid out for US Letter and meant to be printed double-sided. It pulls the exam's format, scoring and content areas, and the figures and rules it turns on, onto dense colour-coded pages. Each figure was checked against the source it cites, and the check date is printed on the sheet (October 2026). An independent study aid, not affiliated with or endorsed by the body that sets the exam. The rules an exam tests can change: confirm against the owner's current documents before you rely on a figure.