outh Carolina Ground Source Heat
Pump Technician Certification License
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. A ground source heat pump system primarily transfers heat by
circulating a fluid through which component to exchange thermal
energy with the ground?
A. Compressor
B. Ground loop
C. Expansion valve
D. Air handler
The ground loop is the primary component where the circulating fluid
exchanges heat with the earth’s stable temperatures.
2. Which type of ground loop configuration typically requires the least
amount of land area?
A. Vertical closed-loop
B. Horizontal closed-loop
C. Pond or lake loop
D. Open loop
,Horizontal loops are installed in trenches close to the surface and generally
occupy the least vertical space, though they require more land area
horizontally.
3. What is the primary purpose of a desuperheater in a ground source
heat pump system?
A. Increase loop fluid pressure
B. Reduce refrigerant superheat
C. Provide domestic hot water heating
D. Expand refrigerant
A desuperheater captures excess heat from the refrigerant to heat potable
water, improving overall system efficiency.
4. In a closed-loop ground source system, the circulating fluid commonly
used is:
A. Pure water only
B. Propane
C. Ethanol
D. Water mixed with antifreeze
Water mixed with antifreeze is used to prevent freezing in cold climates
while transferring heat effectively.
5. During installation, loop field spacing is critical to prevent thermal
interference. If loops are spaced too closely, the system will:
A. Increase heat transfer efficiency
B. Reduce overall heat exchange capacity
C. Improve antifreeze performance
D. Require smaller pumps
Closely spaced loops cause heat to build up in the ground, reducing the
effective capacity for heat exchange and lowering system performance.
6. What instrument is used to measure fluid temperature in a ground
loop?
A. Manometer
, B. Thermometer or temperature sensor
C. Anemometer
D. Hygrometer
Temperature sensors or thermometers measure fluid temperatures to
ensure the loop is operating within design parameters.
7. If a ground source heat pump is undersized for a building’s heat load,
the system will:
A. Run continuously and fail to maintain setpoint temperatures
B. Cycle on and off frequently
C. Provide excessive dehumidification
D. Reduce loop circulating pressure
An undersized system cannot meet demand, causing long runtimes without
reaching desired indoor conditions.
8. The coefficient of performance (COP) of a heat pump is defined as:
A. Heat output divided by heat loss
B. Heat delivered divided by electrical energy consumed
C. Electrical energy input divided by heat removed
D. Loop fluid temperature difference
COP quantifies system efficiency by comparing useful heat delivered to the
electrical energy consumed.
9. In an open-loop ground source system, water is extracted from:
A. The building’s water heater
B. The municipal supply only
C. A well or surface water source
D. A municipal sewage line
Open-loop systems use groundwater or surface water as the heat
exchange medium, which is then discharged appropriately.
10. Which refrigerant property is critical for ground source heat
pump performance?
Pump Technician Certification License
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A ground source heat pump system primarily transfers heat by
circulating a fluid through which component to exchange thermal
energy with the ground?
A. Compressor
B. Ground loop
C. Expansion valve
D. Air handler
The ground loop is the primary component where the circulating fluid
exchanges heat with the earth’s stable temperatures.
2. Which type of ground loop configuration typically requires the least
amount of land area?
A. Vertical closed-loop
B. Horizontal closed-loop
C. Pond or lake loop
D. Open loop
,Horizontal loops are installed in trenches close to the surface and generally
occupy the least vertical space, though they require more land area
horizontally.
3. What is the primary purpose of a desuperheater in a ground source
heat pump system?
A. Increase loop fluid pressure
B. Reduce refrigerant superheat
C. Provide domestic hot water heating
D. Expand refrigerant
A desuperheater captures excess heat from the refrigerant to heat potable
water, improving overall system efficiency.
4. In a closed-loop ground source system, the circulating fluid commonly
used is:
A. Pure water only
B. Propane
C. Ethanol
D. Water mixed with antifreeze
Water mixed with antifreeze is used to prevent freezing in cold climates
while transferring heat effectively.
5. During installation, loop field spacing is critical to prevent thermal
interference. If loops are spaced too closely, the system will:
A. Increase heat transfer efficiency
B. Reduce overall heat exchange capacity
C. Improve antifreeze performance
D. Require smaller pumps
Closely spaced loops cause heat to build up in the ground, reducing the
effective capacity for heat exchange and lowering system performance.
6. What instrument is used to measure fluid temperature in a ground
loop?
A. Manometer
, B. Thermometer or temperature sensor
C. Anemometer
D. Hygrometer
Temperature sensors or thermometers measure fluid temperatures to
ensure the loop is operating within design parameters.
7. If a ground source heat pump is undersized for a building’s heat load,
the system will:
A. Run continuously and fail to maintain setpoint temperatures
B. Cycle on and off frequently
C. Provide excessive dehumidification
D. Reduce loop circulating pressure
An undersized system cannot meet demand, causing long runtimes without
reaching desired indoor conditions.
8. The coefficient of performance (COP) of a heat pump is defined as:
A. Heat output divided by heat loss
B. Heat delivered divided by electrical energy consumed
C. Electrical energy input divided by heat removed
D. Loop fluid temperature difference
COP quantifies system efficiency by comparing useful heat delivered to the
electrical energy consumed.
9. In an open-loop ground source system, water is extracted from:
A. The building’s water heater
B. The municipal supply only
C. A well or surface water source
D. A municipal sewage line
Open-loop systems use groundwater or surface water as the heat
exchange medium, which is then discharged appropriately.
10. Which refrigerant property is critical for ground source heat
pump performance?
