What 40 CFR Part 82 Subpart F actually covers

Subpart F of 40 CFR Part 82 is the section of the U.S. Code of Federal Regulations that implements Section 608 of the Clean Air Act. If you handle refrigerant in stationary air-conditioning and refrigeration equipment, every rule that applies to you lives here. The regulation was first published in 1993, hardened by the 2016 leak repair amendments, and continues to evolve as the American Innovation and Manufacturing (AIM) Act phases down HFCs.

The subpart is divided into seven core sections: §82.150 (applicability), §82.152 (definitions), §82.154 (prohibitions), §82.156 (required practices), §82.158 (technician certification), §82.160 (refrigerant sales restrictions), and §82.162 (recordkeeping). The Universal exam draws from all of them.

Section-by-section, in plain English

§82.150 — Applicability. Establishes that the rule applies to all persons who service, maintain, repair, or dispose of appliances containing Class I or Class II refrigerants, except for very small appliances (under 5 pounds of charge) and motor vehicle air conditioners covered by Section 609.

§82.152 — Definitions. Defines terms you'll see on the exam: "appliance," "refrigerant," "recovery," "recycle," "reclaim," "high-pressure appliance," "low-pressure appliance," and "MVAC." Memorizing the exact definitions is one of the highest-yield items on the test.

§82.154 — Prohibitions. The list of "shall not" actions: venting, knowingly releasing, or disposing of refrigerant except by recovery. The intentional venting prohibition has been in force since November 14, 1994.

§82.156 — Required practices. Defines evacuation levels before opening a system: 0 psig for small appliances, 4 inches Hg vacuum for low-pressure units (recovery and/or recycling equipment built after November 15, 1993), and the now-familiar 500-micron standing-vacuum test for verifying moisture removal.

§82.158 — Technician certification. Creates the four technician types — Type I (small appliances), Type II (high-pressure), Type III (low-pressure), and Universal (all three) — and requires EPA-approved certification before any person can purchase refrigerant for use in their own equipment (since January 1, 2018) or perform service work for hire.

§82.160 — Sales restrictions. Requires that refrigerant be sold only to certified technicians, and that sellers verify certification. The seller must keep a record of the buyer's certification number, the refrigerant type, and the quantity sold for at least three years.

§82.162 — Recordkeeping. Service records must be maintained whenever refrigerant is added to, or removed from, an appliance. The record must include the appliance location, the date, the type and quantity of refrigerant, and the name of the technician and the certifying organization.

Why the test emphasizes this section

The EPA 608 Universal exam is, at its core, a comprehension test on these seven subsections. Every practice question about "what does the regulation require" traces back to specific language in §82.150 through §82.162. Candidates who read the regulation directly — once, in order — routinely score higher than those who rely on a third-party summary.

A practical study tip: read the actual regulation text on the EPA eCFR site, then write your own one-sentence summary of each section. The act of paraphrasing forces the language into long-term memory, and your summary often shows up verbatim in a multiple-choice option on exam day.

Where Subpart F is heading

The AIM Act of 2020 added §82.168 to Subpart F, creating the HFC allocation program. Through 2036, virgin HFC production and consumption must decrease on a glide path that started at 10 percent below baseline in 2022 and reaches 85 percent below baseline by 2036. Field technicians feel this as reclaimed-refrigerant requirements, labeling rules, and new leak inspection thresholds for equipment with 50 or more pounds of charge.

If you're taking the Universal exam in 2026 or later, expect at least one question on HFC phase-down, reclaimed-refrigerant obligations, and the 2024 leak repair rule revisions. Subpart F is no longer just about CFC and HCFC — it is the live regulatory home of HFC management as well.