EPA 608 Core · Clean Air Act & Montreal Protocol · Medium
Since January 1, 2020, how can existing R-22 systems be serviced?
Answer: D. With recovered, reclaimed or stockpiled R-22.
- AOnly with newly produced or imported R-22.
- BThey can no longer be serviced at all.
- COnly after converting them to R-410A.
- DWith recovered, reclaimed or stockpiled R-22.✓ Correct
Why D is right
U.S. production and import of R-22 ended on January 1, 2020. Existing systems may keep running and be serviced with R-22 that was recovered, reclaimed or produced before that date.
More Core questions
- When did U.S. production of CFC refrigerants such as R-12 end?
- What is the primary difference between the Montreal Protocol and the Kigali Amendment?
- What international agreement first phased out ozone-depleting substances?
- What was the primary goal of the original Montreal Protocol?
- Which international agreement targets the global phasedown of HFCs?
Go deeper with the study guide EPA 608 Core Exam: Study Guide for 2026, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.