Heat Pump Certification Most Recent Exam Newest
2026 Questions and Correct Detailed Answers Already
Graded A+
An air to air heat pump has many of the same components as an air conditioning
system. A major difference is that a heat pump also has a what? - CORRECT
ANSWER-Reversing valve
What is the difference between demand defrost, and timed defrost? - CORRECT
ANSWER-Demand defrost happens only when needed and timed defrost is
based on time/temperature.
The thermostat that controls the auxiliary electric heat according to the outdoor
temperature is called the what - CORRECT ANSWER-Outdoor ambient
thermostat
The outdoor temperature at which the heat pump provides the same amount of
heat as the heat loss of the condition space without auxiliary heat is known as the
what - CORRECT ANSWER-Initial balance point
At what temperature is an outdoor ambient thermostat normally set - CORRECT
ANSWER-Slightly above the initial balance point.
,The outdoor coil is frozen solid on a no heat service call, the most likely reason is
what - CORRECT ANSWER-The outdoor fan is inoperative
During the defrost cycle, the system switches to ____ mode - CORRECT
ANSWER-Cooling
During the heating mode, the refrigerant in the indoor coil is under - CORRECT
ANSWER-high pressure
What three things happen on most air to air heat pumps during defrost -
CORRECT ANSWER-The reversing valve must switch to cooling mode, the
outdoor fan shuts off and auxiliary heat is energized.
High selection, pressure and low discharge pressure on a heat pump system
operating in the heating or cooling mode can be an indication of what? -
CORRECT ANSWER-Compressor inefficiency
The preferred method to perform adjustments to refrigerant charge and a heat
pump system is the ____ mode - CORRECT ANSWER-Cooling
, You answer a service call for insufficient heat you find the suction pressure is
higher and discharge pressure is lower than normal using a digital thermometer.
You measure the line entering the reversing valve from the compressor discharge
and find 215°F. You then measure the line leaving the reversing valve that
connects to the indoor coil and find 185°F. These readings are an indication of
what? - CORRECT ANSWER-A faulty reversing valve
Customer complaint is not enough heat you install service gauges, and find the
low side pressure is normal and the high side pressure is lower than normal. You
switch the system to the cooling mode and find the pressures are normal. The
most likely cause of the problem is what - CORRECT ANSWER-A stuck open
check valve at the outdoor coil
A customer complains that their heat pump system blows cool air periodically
during the heat mode this could be caused by what? - CORRECT ANSWER-A
faulty defrost relay
When a heat pump is in the heating mode, what can cause frost accumulation on
the outdoor coil when the ambient temperature is 45°F - CORRECT ANSWER-
The outdoor coil is colder than the ambient air
The indoor fan on a heat pump system operates when - CORRECT ANSWER-
Anytime there is a call for heating or cooling
2026 Questions and Correct Detailed Answers Already
Graded A+
An air to air heat pump has many of the same components as an air conditioning
system. A major difference is that a heat pump also has a what? - CORRECT
ANSWER-Reversing valve
What is the difference between demand defrost, and timed defrost? - CORRECT
ANSWER-Demand defrost happens only when needed and timed defrost is
based on time/temperature.
The thermostat that controls the auxiliary electric heat according to the outdoor
temperature is called the what - CORRECT ANSWER-Outdoor ambient
thermostat
The outdoor temperature at which the heat pump provides the same amount of
heat as the heat loss of the condition space without auxiliary heat is known as the
what - CORRECT ANSWER-Initial balance point
At what temperature is an outdoor ambient thermostat normally set - CORRECT
ANSWER-Slightly above the initial balance point.
,The outdoor coil is frozen solid on a no heat service call, the most likely reason is
what - CORRECT ANSWER-The outdoor fan is inoperative
During the defrost cycle, the system switches to ____ mode - CORRECT
ANSWER-Cooling
During the heating mode, the refrigerant in the indoor coil is under - CORRECT
ANSWER-high pressure
What three things happen on most air to air heat pumps during defrost -
CORRECT ANSWER-The reversing valve must switch to cooling mode, the
outdoor fan shuts off and auxiliary heat is energized.
High selection, pressure and low discharge pressure on a heat pump system
operating in the heating or cooling mode can be an indication of what? -
CORRECT ANSWER-Compressor inefficiency
The preferred method to perform adjustments to refrigerant charge and a heat
pump system is the ____ mode - CORRECT ANSWER-Cooling
, You answer a service call for insufficient heat you find the suction pressure is
higher and discharge pressure is lower than normal using a digital thermometer.
You measure the line entering the reversing valve from the compressor discharge
and find 215°F. You then measure the line leaving the reversing valve that
connects to the indoor coil and find 185°F. These readings are an indication of
what? - CORRECT ANSWER-A faulty reversing valve
Customer complaint is not enough heat you install service gauges, and find the
low side pressure is normal and the high side pressure is lower than normal. You
switch the system to the cooling mode and find the pressures are normal. The
most likely cause of the problem is what - CORRECT ANSWER-A stuck open
check valve at the outdoor coil
A customer complains that their heat pump system blows cool air periodically
during the heat mode this could be caused by what? - CORRECT ANSWER-A
faulty defrost relay
When a heat pump is in the heating mode, what can cause frost accumulation on
the outdoor coil when the ambient temperature is 45°F - CORRECT ANSWER-
The outdoor coil is colder than the ambient air
The indoor fan on a heat pump system operates when - CORRECT ANSWER-
Anytime there is a call for heating or cooling
