ESCO HEAT PUMP EXAM 350+ EXAM QUESTIONS &
CORRECT ANSWERS LATEST 2025
What unit of measure indicates pressures below atmospheric? - ANSWER-hg,
inches of mercury, PSIA, psia, in. hg, in. HG, in. Hg, inches HG, inches Hg, inches hg
Atmospheric pressure is
______________
psia at sea leve - ANSWER-14.7
Refrigeration is defined as the movement of ___________________
from a area where its not wanted, to an area where it is less objectionable. -
ANSWER-heat
As refrigerant absorbs heat, it changes from a
__________________ to a _______________
. - ANSWER-liquid vapor
Superheat vapor is a gas that has been heated to a temperature ____________
its saturation point. - ANSWER-above
During the heating cycle, the outdoor coil of a heat pump become the
___________________ - ANSWER-evaporator
,During the cooling cycle, the indoor coil of a heat pump becomes the
_____________ - ANSWER-evaporator
When a heat pump system goes into defrost mode, what process takes place so
that system can continue to provide heat to the structure? - ANSWER-aux heat
A measurement of the speed or motion of molecules in a substance called. -
ANSWER-temperature
Name two common temperature scales used to measure air temperature. -
ANSWER-Celsius,
Fahrenheit
What does ambient mean? - ANSWER-tempature surrounding an area or object
What is a wet bulb temperature used for? - ANSWER-to measure the moisture in
the air and air temp
What is dew point? - ANSWER-point at which condensation occurs.
What is pressure? - ANSWER-force per unit area
What does PSIG stand for? - ANSWER-per square inch gauge
The three methods of heat transfer are - ANSWER-convection, conduction
, and radiation
,.
Heat always travel from - ANSWER-hot to cold
What method does refrigerant reject heat - ANSWER-condenser
What is the pressure of 410A at 30
F? - ANSWER-97.5
What is the temperature of 410A at 418 psig - ANSWER-120
In order list the three processes that refrigerant goes through in the condenser -
ANSWER-desuperheat, vapor to liquid, and subcooled
In order list the two processes that refrigerant goes through in the evaporator -
ANSWER-evaporation, then vaporized.
What are the differences between a heat pump and regular air conditioner? -
ANSWER-a heat pump has a reverse cycle refridgeration system meaning allows
hot gas where the cool gas is coming from but works just like a ac system in the
cooling system
test esco section 1
An air cooled condenser condenses to liquid at - ANSWER-20-30° above ambient
, An air cooled evaporator evaporates liquid to a vapor at - ANSWER-35 below
ambient
Airflow across the evaporator should be - ANSWER-450 cfm/ton
Azeotropic Blend refrigerants need to be charged in - ANSWER-vapor,liquid
How much heat is still in the air at 0°F? - ANSWER-85%
If superheat is high the TXV/EEV will - ANSWER-open
If superheat is low the TXV/EEV will: - ANSWER-close
Latent heat can be measured with - ANSWER-nota
Near-Azeotropic Blends need to be charged in: - ANSWER-liquid
psi - ANSWER-pounds per sq inch
Sensible heat can be measured with - ANSWER-thermometer
Sub-cool refers to what state - ANSWER-liquid
Sub-cooling is the degrees - ANSWER-below boiling point
CORRECT ANSWERS LATEST 2025
What unit of measure indicates pressures below atmospheric? - ANSWER-hg,
inches of mercury, PSIA, psia, in. hg, in. HG, in. Hg, inches HG, inches Hg, inches hg
Atmospheric pressure is
______________
psia at sea leve - ANSWER-14.7
Refrigeration is defined as the movement of ___________________
from a area where its not wanted, to an area where it is less objectionable. -
ANSWER-heat
As refrigerant absorbs heat, it changes from a
__________________ to a _______________
. - ANSWER-liquid vapor
Superheat vapor is a gas that has been heated to a temperature ____________
its saturation point. - ANSWER-above
During the heating cycle, the outdoor coil of a heat pump become the
___________________ - ANSWER-evaporator
,During the cooling cycle, the indoor coil of a heat pump becomes the
_____________ - ANSWER-evaporator
When a heat pump system goes into defrost mode, what process takes place so
that system can continue to provide heat to the structure? - ANSWER-aux heat
A measurement of the speed or motion of molecules in a substance called. -
ANSWER-temperature
Name two common temperature scales used to measure air temperature. -
ANSWER-Celsius,
Fahrenheit
What does ambient mean? - ANSWER-tempature surrounding an area or object
What is a wet bulb temperature used for? - ANSWER-to measure the moisture in
the air and air temp
What is dew point? - ANSWER-point at which condensation occurs.
What is pressure? - ANSWER-force per unit area
What does PSIG stand for? - ANSWER-per square inch gauge
The three methods of heat transfer are - ANSWER-convection, conduction
, and radiation
,.
Heat always travel from - ANSWER-hot to cold
What method does refrigerant reject heat - ANSWER-condenser
What is the pressure of 410A at 30
F? - ANSWER-97.5
What is the temperature of 410A at 418 psig - ANSWER-120
In order list the three processes that refrigerant goes through in the condenser -
ANSWER-desuperheat, vapor to liquid, and subcooled
In order list the two processes that refrigerant goes through in the evaporator -
ANSWER-evaporation, then vaporized.
What are the differences between a heat pump and regular air conditioner? -
ANSWER-a heat pump has a reverse cycle refridgeration system meaning allows
hot gas where the cool gas is coming from but works just like a ac system in the
cooling system
test esco section 1
An air cooled condenser condenses to liquid at - ANSWER-20-30° above ambient
, An air cooled evaporator evaporates liquid to a vapor at - ANSWER-35 below
ambient
Airflow across the evaporator should be - ANSWER-450 cfm/ton
Azeotropic Blend refrigerants need to be charged in - ANSWER-vapor,liquid
How much heat is still in the air at 0°F? - ANSWER-85%
If superheat is high the TXV/EEV will - ANSWER-open
If superheat is low the TXV/EEV will: - ANSWER-close
Latent heat can be measured with - ANSWER-nota
Near-Azeotropic Blends need to be charged in: - ANSWER-liquid
psi - ANSWER-pounds per sq inch
Sensible heat can be measured with - ANSWER-thermometer
Sub-cool refers to what state - ANSWER-liquid
Sub-cooling is the degrees - ANSWER-below boiling point
