Question 1
In an air-to-air heat pump operating in heating mode, which heat exchanger acts as the evaporator?
Correct Answer:
The outdoor coil
Question 2
Which component allows a single refrigerant circuit to switch a heat pump between heating and cooling operation?
Correct Answer:
Four-way reversing valve
Question 3
On most residential heat pumps, the reversing valve solenoid is wired so the valve is energized in which mode?
Correct Answer:
Cooling mode
Question 4
A heat pump runs constantly in heating but delivers only mildly warm air, and the outdoor coil is iced over while the reversing valve will not shift to defrost. The most likely cause is:
Correct Answer:
Faulty defrost control or sensor
Question 5
During a normal defrost cycle on an air-to-air heat pump, what three things typically occur?
Correct Answer:
Reversing valve shifts to cooling, outdoor fan stops, auxiliary heat energizes
Question 1
Exam overview

About this Exam

Prepare with the NATE Heat Pump Service Practice Questions - NATE Air-to-Air Heat Pump Service Specialty Exam practice quiz. This question bank includes 100 questions covering heat, pump, heating, mode, and outdoor. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NATE Heat Pump Service Practice Questions - NATE Air-to-Air Heat Pump Service Specialty Exam

This practice set contains 100 questions from the matching question bank and focuses on heat, pump, heating, mode, and outdoor. 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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