NATE Heat Pump Exam Questions and Answers 2026/2027 With 100% Complete Solutions.

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