NATE HEAT PUMP EXAM PREP |ACTUAL
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
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 ANSWER
d (All of the above: air movement, humidity, temperature)
Question 2
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 ANSWER
c (+15%)
1
,Question 3
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.
a. ±10%
b. +15%
c. -25%
d. +25%
CORRECT ANSWER
d (+25%)
Question 4
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 ANSWER
b (15%)
Question 5
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?
2
,a. 2.1 kWh
b. 3.2 kWh
c. 5.0 kWh
d. 10.9 kWh
Note: 3,413 Btu/kW
CORRECT ANSWER
b (3.2 kWh)
Question 6
The three processes that transfer heat energy are conduction, convection, and ____.
a. concentration
b. radiation
c. refraction
d. static pressure
CORRECT ANSWER
b (radiation)
Question 7
Heat transfer that occurs when substances of different temperatures are in contact with
each other is called ____.
a. concentration
b. conduction
c. convection
3
, d. radiation
CORRECT ANSWER
b (conduction)
Question 8
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 ANSWER
d (The refrigerant's boiling point increases)
Question 9
What is the primary danger to people near an accidental refrigerant release or spill?
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 ANSWER
d (Suffocation caused by the heavier refrigerant displacing oxygen in the air)
4
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
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 ANSWER
d (All of the above: air movement, humidity, temperature)
Question 2
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 ANSWER
c (+15%)
1
,Question 3
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.
a. ±10%
b. +15%
c. -25%
d. +25%
CORRECT ANSWER
d (+25%)
Question 4
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 ANSWER
b (15%)
Question 5
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?
2
,a. 2.1 kWh
b. 3.2 kWh
c. 5.0 kWh
d. 10.9 kWh
Note: 3,413 Btu/kW
CORRECT ANSWER
b (3.2 kWh)
Question 6
The three processes that transfer heat energy are conduction, convection, and ____.
a. concentration
b. radiation
c. refraction
d. static pressure
CORRECT ANSWER
b (radiation)
Question 7
Heat transfer that occurs when substances of different temperatures are in contact with
each other is called ____.
a. concentration
b. conduction
c. convection
3
, d. radiation
CORRECT ANSWER
b (conduction)
Question 8
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 ANSWER
d (The refrigerant's boiling point increases)
Question 9
What is the primary danger to people near an accidental refrigerant release or spill?
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 ANSWER
d (Suffocation caused by the heavier refrigerant displacing oxygen in the air)
4
