NATE Heat Pump Exam/ Questions with
Certified Solutions
Charging a heat pump with refrigerant is best accomplished in the _______ mode.
A: Heating mode
B: Cooling mode
C: Defrost mode
D: Emergency heating mode - Answer: B: Cooling mode
Heat pumps can provide both heating in the winter and cooling in the summer. In
which mode is the heat pump more efficient?
A: Heating mode
B: Cooling mode
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,C: Defrost mode
D: Emergency heating mode - Answer: A: Heating mode
Which of the following components is exclusive to the heat pump?
A: Condenser
B: Oil separator
C: Reversing valve
D: Accumulator - Answer: C: Reversing valve
Which of the following airflow rates is the most reasonable for a heat pump
system operating in the heating cycle?
A: 200 cfm per ton
B: 300 cfm per ton
C: 400 cfm per ton
D: 450 cfm per ton - Answer: D: 450 cfm per ton
During the heat pump's cooling cycle, the outdoor coil is utilized as a _________
while the indoor coil is utilized as a____________.
A: Condenser, evaporator
B: Evaporator, condenser
C: Compressor, accumulator
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, D: Accumulator, condenser - Answer: A: Condenser, evaporator
Heat is present in winter outdoor air until the outside air ambient temperature
reaches a low temperature of:
A: 0 degrees F
B: 32 degrees F
C: 273 degrees F
D: -459 degrees F - Answer: D: -459 degrees F
Technically this is true, but not practical. A heat pump is doing good to continue to
work below 10 deg F unless specifically designed for lower temperatures.
The heat pump utilizes:
A: Two filter-driers with check valves
B: One bi-flow filter-drier
C: A single mono-flow filter-drier in the liquid line
D: Some use the bi-flow filter-drier and others use two filter-driers with check
valves - Answer: D: Some use the bi-flow- filter-drier and others use two filter-
driers with check valves
The correct way to size a heat pump is to perform both heating and cooling load
calculations and select the heat pump size by:
A: Adding the heating load and cooling loads
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Certified Solutions
Charging a heat pump with refrigerant is best accomplished in the _______ mode.
A: Heating mode
B: Cooling mode
C: Defrost mode
D: Emergency heating mode - Answer: B: Cooling mode
Heat pumps can provide both heating in the winter and cooling in the summer. In
which mode is the heat pump more efficient?
A: Heating mode
B: Cooling mode
Page 1 of 19
,C: Defrost mode
D: Emergency heating mode - Answer: A: Heating mode
Which of the following components is exclusive to the heat pump?
A: Condenser
B: Oil separator
C: Reversing valve
D: Accumulator - Answer: C: Reversing valve
Which of the following airflow rates is the most reasonable for a heat pump
system operating in the heating cycle?
A: 200 cfm per ton
B: 300 cfm per ton
C: 400 cfm per ton
D: 450 cfm per ton - Answer: D: 450 cfm per ton
During the heat pump's cooling cycle, the outdoor coil is utilized as a _________
while the indoor coil is utilized as a____________.
A: Condenser, evaporator
B: Evaporator, condenser
C: Compressor, accumulator
Page 2 of 19
, D: Accumulator, condenser - Answer: A: Condenser, evaporator
Heat is present in winter outdoor air until the outside air ambient temperature
reaches a low temperature of:
A: 0 degrees F
B: 32 degrees F
C: 273 degrees F
D: -459 degrees F - Answer: D: -459 degrees F
Technically this is true, but not practical. A heat pump is doing good to continue to
work below 10 deg F unless specifically designed for lower temperatures.
The heat pump utilizes:
A: Two filter-driers with check valves
B: One bi-flow filter-drier
C: A single mono-flow filter-drier in the liquid line
D: Some use the bi-flow filter-drier and others use two filter-driers with check
valves - Answer: D: Some use the bi-flow- filter-drier and others use two filter-
driers with check valves
The correct way to size a heat pump is to perform both heating and cooling load
calculations and select the heat pump size by:
A: Adding the heating load and cooling loads
Page 3 of 19
