NATE Heat Pump Exam Questions and Answers |Fall
2025/2026 Update | 100% Correct
Question 1
Two technicians are working on a heat pump system and are preparing to evacuate the system. Technician A says that in
order to pull a good vacuum the reversing valve needs to be switched on and off during the evacuation so air and
moisture are not trapped in the system. Technician B says technician A is incorrect and that the reversing valve will not
switch with the system in a vacuum anyway. Who is correct?
A: Technician A is correct
B: Technician B is correct
C: Both technicians A and B are correct
D: Both technicians A and B are incorrect
Correct Answer
B: Technician B is correct
Page 1 of 32
,Question 2
The "balance point" of a heat pump is:
A: The lowest temperature at which the heat pump can meet the heating requirement for the structure
B: The lowest temperature at which the heat pump can operate
C: The temperature at which the heat pump has the highest efficiency
D: The point at which the heating and cooling loads meet
Correct Answer
A: The lowest temperature at which the heat pump can meet the heating requirement for the structure
Question 3
Which of the following is an incorrect term for the solenoid valve that switches the heat pump between the heating and
cooling modes?
A: Changeover valve
B: Reversing valve
C: Four-way valve
D: Discharge operator valve
Correct Answer
D: Discharge operator valve
Page 2 of 32
,Question 4
Which of the following components is exclusive to the heat pump?
A: Condenser
B: Oil separator
C: Reversing valve
D: Accumulator
Correct Answer
C: Reversing valve
Page 3 of 32
, Question 5
Heat pumps often employ which of the following accessories?
A: An accumulator
B: Evaporator pressure regulator
C: Electronic suction throttling valve
D: Crankcase pressure regulator
Correct Answer
A: An accumulator
Question 6
When a heat pump is operating in the cooling mode, the suction line at the compressor should feel _____ and when
operating in the heating mode the same suction line should feel _____.
A: Cool, hot
B: Hot, cool
C: Hot, hot
D: Cool, cool
Correct Answer
D: Cool, cool
Page 4 of 32
2025/2026 Update | 100% Correct
Question 1
Two technicians are working on a heat pump system and are preparing to evacuate the system. Technician A says that in
order to pull a good vacuum the reversing valve needs to be switched on and off during the evacuation so air and
moisture are not trapped in the system. Technician B says technician A is incorrect and that the reversing valve will not
switch with the system in a vacuum anyway. Who is correct?
A: Technician A is correct
B: Technician B is correct
C: Both technicians A and B are correct
D: Both technicians A and B are incorrect
Correct Answer
B: Technician B is correct
Page 1 of 32
,Question 2
The "balance point" of a heat pump is:
A: The lowest temperature at which the heat pump can meet the heating requirement for the structure
B: The lowest temperature at which the heat pump can operate
C: The temperature at which the heat pump has the highest efficiency
D: The point at which the heating and cooling loads meet
Correct Answer
A: The lowest temperature at which the heat pump can meet the heating requirement for the structure
Question 3
Which of the following is an incorrect term for the solenoid valve that switches the heat pump between the heating and
cooling modes?
A: Changeover valve
B: Reversing valve
C: Four-way valve
D: Discharge operator valve
Correct Answer
D: Discharge operator valve
Page 2 of 32
,Question 4
Which of the following components is exclusive to the heat pump?
A: Condenser
B: Oil separator
C: Reversing valve
D: Accumulator
Correct Answer
C: Reversing valve
Page 3 of 32
, Question 5
Heat pumps often employ which of the following accessories?
A: An accumulator
B: Evaporator pressure regulator
C: Electronic suction throttling valve
D: Crankcase pressure regulator
Correct Answer
A: An accumulator
Question 6
When a heat pump is operating in the cooling mode, the suction line at the compressor should feel _____ and when
operating in the heating mode the same suction line should feel _____.
A: Cool, hot
B: Hot, cool
C: Hot, hot
D: Cool, cool
Correct Answer
D: Cool, cool
Page 4 of 32
