EPA 608 Core · Refrigeration Fundamentals · Easy
What does refrigerant do inside the evaporator?
Answer: D. It absorbs heat as it boils.
- AIt releases heat and condenses.
- BIt is compressed into a hot gas.
- CIt is filtered and dried.
- DIt absorbs heat as it boils.✓ Correct
Why D is right
Low-pressure liquid boils in the evaporator, absorbing heat from the air or water being cooled. The condenser does the opposite, releasing that heat as the vapor condenses.
More Core questions
- Which component raises the pressure and temperature of refrigerant vapor?
- What characterizes a zeotropic refrigerant blend (400-series)?
- Which PT chart value do you use to calculate subcooling for a zeotropic blend?
- What happens when a zeotropic blend leaks from a system?
- What is the state of refrigerant entering the compressor?
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.