NATE Heat Pump Exam 2024/2025

NATE Heat Pump Exam 2024/2025


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


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


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