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NATE Heat Pump Exam
|Comprehensive Q&A For Certification
Success 2026
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
Terminal "O" on a heat pump thermostat is used for:
A: Operating the reversing valve
,2
B: Operating the indoor fan motor
C: Operating the compressor
D: Operating the condenser fan motor - correct-answer -A: Operating the
reversing valve
Terminal "G" on a heat pump thermostat is used for:
A: Operating the reversing valve
B: Operating the indoor fan motor
C: Operating the compressor
D: Operating the condenser fan motor - correct-answer -B: Operating the indoor
fan motor
A typical 3 ton split system residential heat pump would have auxiliary electric
heating elements of about how many watts total?
A: 4 kw
, 3
B: 5 kw
C: 15 to 20 kw
D: 40 to 60 kw - correct-answer -C: 15 to 20 kw
One ton of heat is 12,000 BTU's
By dividing the total BTU's of the unit by 3.414 (watts to btu's conversion factor)
we get the total Watts.
36,000 BTU/3.14 = 10,545 watts needed minimum or 3,515 watts per ton.
To make sure enough heat is available for the defrost cycle and temperatures
below the systems balance point, it is suggested that 5 to 7.5 Kw be installed per
ton. This standard makes the 15 to 20 kw the correct answer.
Typical slide-in packages of electric heating elements come in units of how many
kilowatts each?
A: 1 to 2 kw
B: 3 to 6 kw
NATE Heat Pump Exam
|Comprehensive Q&A For Certification
Success 2026
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
Terminal "O" on a heat pump thermostat is used for:
A: Operating the reversing valve
,2
B: Operating the indoor fan motor
C: Operating the compressor
D: Operating the condenser fan motor - correct-answer -A: Operating the
reversing valve
Terminal "G" on a heat pump thermostat is used for:
A: Operating the reversing valve
B: Operating the indoor fan motor
C: Operating the compressor
D: Operating the condenser fan motor - correct-answer -B: Operating the indoor
fan motor
A typical 3 ton split system residential heat pump would have auxiliary electric
heating elements of about how many watts total?
A: 4 kw
, 3
B: 5 kw
C: 15 to 20 kw
D: 40 to 60 kw - correct-answer -C: 15 to 20 kw
One ton of heat is 12,000 BTU's
By dividing the total BTU's of the unit by 3.414 (watts to btu's conversion factor)
we get the total Watts.
36,000 BTU/3.14 = 10,545 watts needed minimum or 3,515 watts per ton.
To make sure enough heat is available for the defrost cycle and temperatures
below the systems balance point, it is suggested that 5 to 7.5 Kw be installed per
ton. This standard makes the 15 to 20 kw the correct answer.
Typical slide-in packages of electric heating elements come in units of how many
kilowatts each?
A: 1 to 2 kw
B: 3 to 6 kw
