Question 1
What is the primary purpose of the refrigeration cycle?
Correct Answer:
To transfer heat from one location to another using a refrigerant
Question 2
Which of the four major HVACR components increases both the pressure and temperature of refrigerant vapor?
Correct Answer:
Compressor
Question 3
In a vapor-compression system, what phase change occurs in the evaporator?
Correct Answer:
Liquid refrigerant boils into vapor while absorbing heat
Question 4
What is the function of the metering device in a refrigeration system?
Correct Answer:
To reduce the pressure of liquid refrigerant and control flow into the evaporator
Question 5
What is the most common refrigerant used in new residential air conditioning systems installed in the United States in 2026?
Correct Answer:
R-32 or R-454B (A2L low-GWP refrigerants)
Question 1
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Prepare with the NCCER HVACR Practice Questions - NCCER HVACR HVAC Technician Exam practice quiz. This question bank includes 100 questions covering refrigerant, function, refrigeration, residential, and heat. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NCCER HVACR Practice Questions - NCCER HVACR HVAC Technician Exam

This practice set contains 100 questions from the matching question bank and focuses on refrigerant, function, refrigeration, residential, and heat. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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