Exam topic · Core
Environmental impact
Why the regulation exists: ozone depletion from CFC and HCFC releases, and the climate impact of their substitutes. Core questions test whether you understand what venting actually does, which is the moral logic behind every rule on the exam.
The figures that belong to this topic
- The venting prohibition bars knowingly releasing regulated refrigerant during maintenance, service, repair or disposal.
- De minimis releases during good-faith recovery attempts are excepted.
- A short list of substitutes in named end-uses, such as carbon dioxide, nitrogen and water in any application, is exempt from the prohibition under 82.154(a)(1).
Go deeper: what a CFC is and why R-11 and R-12 were phased out, HCFCs such as R-22 and the 2020 production end and HFCs, their GWP values and HFO vs HFC.
How to study it
Read the topic in your prep material once for structure, then drill it through the free practice questions, which cite the regulation paragraph behind every answer. On a closed-book exam the citations are your study tool, not your crutch: they teach you why the answer is what it is.
The other topics
| Core | Laws and regulations |
| Core | Changing industry outlook |
| Type sections | Leak detection |
| Type sections | Recovery techniques |
| Type sections | Safety |
| Type sections | Shipping |
| Type sections | Disposal |
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