NATE Heat Pump Exam Questions and
Answers 2026/2027 With 100%
Complete Solutions.
High SEER rated heat pumps are those that employ:
A: Scroll compressors and over-sized coils
B: Reciprocating compressors and over-sized coils
C: Scroll compressors and accumulators
D: Reciprocating compressors and accumulators - CORRECT ANSWER -A: Scroll
compressors and over-sized coils
Which of the following metering devices can improve the operating efficiency of a
heat pump?
A: Thermostatic expansion valve
B: Automatic expansion valve
,C: Fixed orifice
D: Capillary tube - CORRECT ANSWER -A: Thermostatic expansion valve
During the defrost cycle the outdoor fan motor is:
A: Shut down
B: Operated at a reduced speed
C: Stepped up to its highest speed
D: Allowed to run at its normal speed - CORRECT ANSWER -A: Shut down
Which of the following compressors is most "liquid slug" tolerable?
A: Reciprocating
B: Scroll
, C: Compliant scroll
D: Rotary - CORRECT ANSWER -B: Scroll
In the heating mode, ice can still collect on the outdoor coil even when the
outside air temperature is above 40 degrees. Why?
A: Because the outside air temperature of 40 degrees still has a dew point
temperature below the freezing point
B: Because the outdoor coil is vaporizing refrigerant at a temperature below 32
degrees
C: Because the latent heat of the refrigerant is always below freezing
D: The statement is an incorrect statement - CORRECT ANSWER -B: Because the
outdoor coil is vaporizing refrigerant at a temperature below 32 degrees
The outdoor coil on a heat pump is defrosted using:
A: Hot gas
Answers 2026/2027 With 100%
Complete Solutions.
High SEER rated heat pumps are those that employ:
A: Scroll compressors and over-sized coils
B: Reciprocating compressors and over-sized coils
C: Scroll compressors and accumulators
D: Reciprocating compressors and accumulators - CORRECT ANSWER -A: Scroll
compressors and over-sized coils
Which of the following metering devices can improve the operating efficiency of a
heat pump?
A: Thermostatic expansion valve
B: Automatic expansion valve
,C: Fixed orifice
D: Capillary tube - CORRECT ANSWER -A: Thermostatic expansion valve
During the defrost cycle the outdoor fan motor is:
A: Shut down
B: Operated at a reduced speed
C: Stepped up to its highest speed
D: Allowed to run at its normal speed - CORRECT ANSWER -A: Shut down
Which of the following compressors is most "liquid slug" tolerable?
A: Reciprocating
B: Scroll
, C: Compliant scroll
D: Rotary - CORRECT ANSWER -B: Scroll
In the heating mode, ice can still collect on the outdoor coil even when the
outside air temperature is above 40 degrees. Why?
A: Because the outside air temperature of 40 degrees still has a dew point
temperature below the freezing point
B: Because the outdoor coil is vaporizing refrigerant at a temperature below 32
degrees
C: Because the latent heat of the refrigerant is always below freezing
D: The statement is an incorrect statement - CORRECT ANSWER -B: Because the
outdoor coil is vaporizing refrigerant at a temperature below 32 degrees
The outdoor coil on a heat pump is defrosted using:
A: Hot gas
