1 | Page
heat pumps Questions and Correct Answers
List three characteristics of fluids used in heat exchange pumps.
Ans: — transfer heat readily.
have a low cost.
be environmentally safe.
A domestic hot water loop is often used for heating domestic hot
water from the hot discharge gas coming from the heat pump's
refrigerant compressor. Ans: — True
When a heat pump is supplying as much heat as the load requires
and is operating continuously, it is at what is called the Ans: —
balance point
An advantage of a "parallel flow" configuration of ground loops is
_ Ans: — smaller diameter pipes
When a compressor is changed, the four-way valve also must be
changed. Ans: — False
The indoor coil acts as the evaporator in the summer and as the
Ans: — condenser
In a closed-loop system, the plastic water pipes that are buried in
the Earth are called ____ Ans: — ground loops and water loops
A dry well is most commonly used as part of a(n) Ans: — open-
loop
If a heat pump is not capable of handling the heat load, a(n)
Answer
heat source will be added to help handle the load. Ans: — auxiliary
What are the advantages of a parallel-flow system? Ans: —
Smaller-diameter and lower-cost piping
Lower installation and labor costs
Less antifreeze required
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The hot gas line from the heat pump's compressor can be used to
Ans: — heat domestic water
Open-loop, water-source heat pump systems involve the transfer
of heat between a water source and the air or water being
circulated to a(n) Ans: — conditioned
Termination of the defrost cycle occurs when the liquid off the
outside coil reaches _ Ans: — 50f
The suction line is known as the ____ line in an air-to-air heat
pump split system. Ans: — Gas
Since the Earth's crust is cooler than the air during the summer, it
can be used to accept air conditioning heat loads. Ans: — True
The
Answer
is a four-port valve that has a slide mechanism in it. Ans: — four-
way reversing valve
TXVs used in air conditioning units and heat pumps are
interchangeable as long as they are the same size and for the same
refrigerant. Ans: — False
What is the temperature differential between water in and water
out of a heat exchanger that has transferred 50,000 Btu/h? The
flow rate is 10 gallons per minute. Ans: — 10
When oil or gas auxiliary heat is used with a heat pump, the heat
pump coil must be located in the Ans: — outlet air stream
One of the minor differences between troubleshooting a
geothermal heat pump and an air-to-air heat pump is how to gain
access to pressures and temperatures in the water or ground loop.
Ans: — True
The component of the air-to-air heat pump in cooling mode that is
located outside is known as the Ans: — Evapotor
Closed-loop, or
Answer
© 2025 All rights reserved
heat pumps Questions and Correct Answers
List three characteristics of fluids used in heat exchange pumps.
Ans: — transfer heat readily.
have a low cost.
be environmentally safe.
A domestic hot water loop is often used for heating domestic hot
water from the hot discharge gas coming from the heat pump's
refrigerant compressor. Ans: — True
When a heat pump is supplying as much heat as the load requires
and is operating continuously, it is at what is called the Ans: —
balance point
An advantage of a "parallel flow" configuration of ground loops is
_ Ans: — smaller diameter pipes
When a compressor is changed, the four-way valve also must be
changed. Ans: — False
The indoor coil acts as the evaporator in the summer and as the
Ans: — condenser
In a closed-loop system, the plastic water pipes that are buried in
the Earth are called ____ Ans: — ground loops and water loops
A dry well is most commonly used as part of a(n) Ans: — open-
loop
If a heat pump is not capable of handling the heat load, a(n)
Answer
heat source will be added to help handle the load. Ans: — auxiliary
What are the advantages of a parallel-flow system? Ans: —
Smaller-diameter and lower-cost piping
Lower installation and labor costs
Less antifreeze required
© 2025 All rights reserved
, 2 | Page
The hot gas line from the heat pump's compressor can be used to
Ans: — heat domestic water
Open-loop, water-source heat pump systems involve the transfer
of heat between a water source and the air or water being
circulated to a(n) Ans: — conditioned
Termination of the defrost cycle occurs when the liquid off the
outside coil reaches _ Ans: — 50f
The suction line is known as the ____ line in an air-to-air heat
pump split system. Ans: — Gas
Since the Earth's crust is cooler than the air during the summer, it
can be used to accept air conditioning heat loads. Ans: — True
The
Answer
is a four-port valve that has a slide mechanism in it. Ans: — four-
way reversing valve
TXVs used in air conditioning units and heat pumps are
interchangeable as long as they are the same size and for the same
refrigerant. Ans: — False
What is the temperature differential between water in and water
out of a heat exchanger that has transferred 50,000 Btu/h? The
flow rate is 10 gallons per minute. Ans: — 10
When oil or gas auxiliary heat is used with a heat pump, the heat
pump coil must be located in the Ans: — outlet air stream
One of the minor differences between troubleshooting a
geothermal heat pump and an air-to-air heat pump is how to gain
access to pressures and temperatures in the water or ground loop.
Ans: — True
The component of the air-to-air heat pump in cooling mode that is
located outside is known as the Ans: — Evapotor
Closed-loop, or
Answer
© 2025 All rights reserved
