EPA 608 Core · Refrigeration Fundamentals · Easy
Which component raises the pressure and temperature of refrigerant vapor?
Answer: D. The compressor.
- AThe evaporator.
- BThe metering device.
- CThe filter-drier.
- DThe compressor.✓ Correct
Why D is right
The compressor draws in low-pressure vapor and squeezes it into high-pressure, high-temperature vapor, which then gives up its heat in the condenser.
More Core questions
- 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?
- What is the state of refrigerant leaving the condenser?
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.