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NATE Exam: Air Conditioning and
Heat Pumps|COMPLETE STUDY GUIDE
WITH HIGH YIELD QUESTIONS AND
100% RIGHT/AUTHENTIC ANSWERS|
LATEST VERSION 2025|GET A PASS
ON YOUR FIRST TRIAL
Which of the following factors affects a customer's level of comfort?
a. Air movement
b. Humidity
c. Temperature
d. All of the above - CORRECT ANSWERS✔️✔️d (All of the above: air movement,
humidity, temperature)
A cooling load calculation estimates the sensible heat gain of a structure. The
maximum sensible capacity of a cooling-only system should be within ____% of
this calculated value.
a. ±10%
b. +10%
c. +15%
d. +30% - CORRECT ANSWERS✔️✔️c (+15%)
The maximum sensible cooling capacity of a heat pump should be within ____%
of the calculated sensible heat gain of a structure with a large heating load.
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a. ±10%
b. +15%
c. -25%
d. +25% - CORRECT ANSWERS✔️✔d
️ (+25%)
The combined output of a heat pump and its auxiliary heat should not exceed the
calculated heat loss of a home by more than ____%.
a. 10%
b. 15%
c. 20%
d. 25% - CORRECT ANSWERS✔️✔b
️ (15%)
What amount of auxiliary electric heat is needed when the output of a heat pump
on a design day equals 18,800 Btuh and the heat loss of a home is 29,700 Btuh?
a. 2.1 kWh
b. 3.2 kWh
c. 5.0 kWh
d. 10.9 kWh
Note: 3,413 Btu/kW - CORRECT ANSWERS✔️✔️b (3.2 kWh)
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The three processes that transfer heat energy are conduction, convection, and
____.
a. concentration
b. radiation
c. refraction
d. static pressure - CORRECT ANSWERS✔️✔️b (radiation)
Heat transfer that occurs when substances of different temperatures are in
contact with each other is called ____.
a. concentration
b. conduction
c. convection
d. radiation - CORRECT ANSWERS✔️✔️b (conduction)
What effect does raising the pressure in a sealed system have on refrigerant?
a. It becomes more difficult to subcool the liquid refrigerant
b. It becomes more difficult to superheat the refrigerant vapor
c. The refrigerant's boiling point decreases
d. The refrigerant's boiling point increases - CORRECT ANSWERS✔️✔️d (The
refrigerant's boiling point increases)
What is the primary danger to people near an accidental refrigerant release or
spill?
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a. Blurred vision caused by the refrigerant vapor coming in contact with the eyes
b. Changes in weather patterns caused by global warming
c. Damage to the food chain caused by decreased ozone levels in the stratosphere
d. Suffocation caused by the heavier refrigerant displacing oxygen in the air -
CORRECT ANSWERS✔️✔️d (Suffocation caused by the heavier refrigerant
displacing oxygen in the air)
The maximum temperature at which refrigerant may be stored is ____°F when
the container is no more than ____% full of liquid by volume.
a. 120°F, 60%
b. 125°F, 60%
c. 125°F, 80%
d. 135°F, 80% - CORRECT ANSWERS✔️✔️c (125°F, 80%)
Boiling of the refrigerant occurs in which system component?
a. Compressor
b. Condenser
c. Evaporator
d. Metering device - CORRECT ANSWERS✔️✔️c (Evaporator)
Why is superheat necessary in a system that utilizes hermetic compressors?
SUCCESS
NATE Exam: Air Conditioning and
Heat Pumps|COMPLETE STUDY GUIDE
WITH HIGH YIELD QUESTIONS AND
100% RIGHT/AUTHENTIC ANSWERS|
LATEST VERSION 2025|GET A PASS
ON YOUR FIRST TRIAL
Which of the following factors affects a customer's level of comfort?
a. Air movement
b. Humidity
c. Temperature
d. All of the above - CORRECT ANSWERS✔️✔️d (All of the above: air movement,
humidity, temperature)
A cooling load calculation estimates the sensible heat gain of a structure. The
maximum sensible capacity of a cooling-only system should be within ____% of
this calculated value.
a. ±10%
b. +10%
c. +15%
d. +30% - CORRECT ANSWERS✔️✔️c (+15%)
The maximum sensible cooling capacity of a heat pump should be within ____%
of the calculated sensible heat gain of a structure with a large heating load.
SUCCESS
,STUDYSAGE
a. ±10%
b. +15%
c. -25%
d. +25% - CORRECT ANSWERS✔️✔d
️ (+25%)
The combined output of a heat pump and its auxiliary heat should not exceed the
calculated heat loss of a home by more than ____%.
a. 10%
b. 15%
c. 20%
d. 25% - CORRECT ANSWERS✔️✔b
️ (15%)
What amount of auxiliary electric heat is needed when the output of a heat pump
on a design day equals 18,800 Btuh and the heat loss of a home is 29,700 Btuh?
a. 2.1 kWh
b. 3.2 kWh
c. 5.0 kWh
d. 10.9 kWh
Note: 3,413 Btu/kW - CORRECT ANSWERS✔️✔️b (3.2 kWh)
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The three processes that transfer heat energy are conduction, convection, and
____.
a. concentration
b. radiation
c. refraction
d. static pressure - CORRECT ANSWERS✔️✔️b (radiation)
Heat transfer that occurs when substances of different temperatures are in
contact with each other is called ____.
a. concentration
b. conduction
c. convection
d. radiation - CORRECT ANSWERS✔️✔️b (conduction)
What effect does raising the pressure in a sealed system have on refrigerant?
a. It becomes more difficult to subcool the liquid refrigerant
b. It becomes more difficult to superheat the refrigerant vapor
c. The refrigerant's boiling point decreases
d. The refrigerant's boiling point increases - CORRECT ANSWERS✔️✔️d (The
refrigerant's boiling point increases)
What is the primary danger to people near an accidental refrigerant release or
spill?
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a. Blurred vision caused by the refrigerant vapor coming in contact with the eyes
b. Changes in weather patterns caused by global warming
c. Damage to the food chain caused by decreased ozone levels in the stratosphere
d. Suffocation caused by the heavier refrigerant displacing oxygen in the air -
CORRECT ANSWERS✔️✔️d (Suffocation caused by the heavier refrigerant
displacing oxygen in the air)
The maximum temperature at which refrigerant may be stored is ____°F when
the container is no more than ____% full of liquid by volume.
a. 120°F, 60%
b. 125°F, 60%
c. 125°F, 80%
d. 135°F, 80% - CORRECT ANSWERS✔️✔️c (125°F, 80%)
Boiling of the refrigerant occurs in which system component?
a. Compressor
b. Condenser
c. Evaporator
d. Metering device - CORRECT ANSWERS✔️✔️c (Evaporator)
Why is superheat necessary in a system that utilizes hermetic compressors?
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