EPA 608 Core · Section 608 Regulations · Hard
Are hydrocarbon refrigerants like R-290 exempt from the venting prohibition?
Answer: A. Only in specific end-uses EPA has exempted.
- AOnly in specific end-uses EPA has exempted.✓ Correct
- BYes, they can be vented from any system.
- CNo, they must always be recovered first.
- DNo, unless they are mixed with CFCs.
Why A is right
The EPA exempts certain natural refrigerants from the venting ban only in specific approved applications.
More Core questions
- Which refrigerant container may still be sold to a buyer without Section 608 or 609 certification?
- Under the AIM Act, EPA regulates HFCs through which three main areas?
- Which regulation phases down the production of HFCs in the United States?
- Is it legal to vent natural refrigerants like R-290 (propane) or R-744 (CO2)?
- What EPA certification is required to purchase HCFC or HFC refrigerants?
Go deeper with the study guide How to Get EPA 608 Certified in 2026: Step by Step, 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.