EPA 608 Core · Refrigeration Fundamentals · Easy
What does the 'R' in refrigerant designations (e.g., R-22) stand for?
Answer: B. Refrigerant.
- ARegulated.
- BRefrigerant.✓ Correct
- CReplacement.
- DRetrofit.
Why B is right
The 'R' is the ASHRAE standard prefix simply meaning 'Refrigerant'.
More Core questions
- What type of refrigerant is R-134a?
- What type of refrigerant is R-1234yf?
- How does a zeotropic blend differ from a pure refrigerant?
- What is 'temperature glide' in a zeotropic blend?
- What causes fractionation in a zeotropic blend?
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.