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PROFESSIONAL HOME INSPECTOR
EXAM NHIE – TREC QUESTIONS
WITH ANSWERS.
The ___ _____directs hot refrigerant to the indoor coil in the
_____cycle in a heat pump.
a. Multi-cycle valve - heating
b. Reversing valve - cooling
c. Reversing valve - heating - correct answer -c. Reversing valve -
heating
Under certain operating conditions, _____ will form on the outdoor
coil. This can cause a/an ____ in efficiency.
a. Moss - increase
b. Frost - decrease
c. Frost - increase
d. Mold - decrease - correct answer -b. Frost - decrease
The defrost cycle is initiated by ____ and ____.
a. Homeowner and temperature
b. Time and temperature
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c. Time and humidity
d. Temperature and humidity - correct answer -b. Time and
temperature
The most common cause of insufficient airflow in an A/C system
is?
a. Dirty coil
b. Dirty filter
c. Oversized ducts
d. Both a and b - correct answer -d. Both a and b
Ductwork should be ____ enough to handle the volume of air
needed
for correct A/C operation.
a. Large
b. Small
c. Square
d. Round - correct answer -a. Large
In heavy snowfall areas, it is good practice to mount the heat
pump's outdoor unit on a/an _____
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to prevent snow from blocking the coil.
a. Wood platform
b. Concrete platform
c. Elevated platform
d. Plastic platform - correct answer -c. Elevated platform
Why are heat pumps labeled not to be operated unless power is
on for a minimum of
12-hours?
a. Oil in compressor needs to be heated to remove liquid
refrigerant
b. Oil in compressor needs to be heated to remove water
c. Oil in compressor needs to be heated for proper lubrication
d. Oil is only added for cold weather operation - correct answer -a.
Oil in compressor needs to be heated to remove liquid refrigerant
A non-technically exhaustive way to evaluate the heat
exchanger?
a. Remove plenum and inspect visually
b. Water pressure test
c. Check flame pattern when blower comes on
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d. Inspect register covers for soot - correct answer -c. Check
flame pattern when blower comes on
Which of the following statements is TRUE for a cooling unit
located in an attic where
damage may result from condensate overflow?
a. Attic ventilation must be increased to avoid condensation
b. Steel ducting is not allowed because of potential damage from
condensation
c. A pan with a drain or float switch is required beneath the
evaporator unit
d. A supplemental condensate pump is required - correct answer -
c. A pan with a drain or float switch is required beneath the
evaporator unit
A furnace can be located in a laundry room?
a. True
b. False - correct answer -a. True
Converting a heating system fan to cooling type fan requires?
a. Changing duct wire
b. A 2-speed or variable speed fan
PROFESSIONAL HOME INSPECTOR
EXAM NHIE – TREC QUESTIONS
WITH ANSWERS.
The ___ _____directs hot refrigerant to the indoor coil in the
_____cycle in a heat pump.
a. Multi-cycle valve - heating
b. Reversing valve - cooling
c. Reversing valve - heating - correct answer -c. Reversing valve -
heating
Under certain operating conditions, _____ will form on the outdoor
coil. This can cause a/an ____ in efficiency.
a. Moss - increase
b. Frost - decrease
c. Frost - increase
d. Mold - decrease - correct answer -b. Frost - decrease
The defrost cycle is initiated by ____ and ____.
a. Homeowner and temperature
b. Time and temperature
, Page | 2
c. Time and humidity
d. Temperature and humidity - correct answer -b. Time and
temperature
The most common cause of insufficient airflow in an A/C system
is?
a. Dirty coil
b. Dirty filter
c. Oversized ducts
d. Both a and b - correct answer -d. Both a and b
Ductwork should be ____ enough to handle the volume of air
needed
for correct A/C operation.
a. Large
b. Small
c. Square
d. Round - correct answer -a. Large
In heavy snowfall areas, it is good practice to mount the heat
pump's outdoor unit on a/an _____
, Page | 3
to prevent snow from blocking the coil.
a. Wood platform
b. Concrete platform
c. Elevated platform
d. Plastic platform - correct answer -c. Elevated platform
Why are heat pumps labeled not to be operated unless power is
on for a minimum of
12-hours?
a. Oil in compressor needs to be heated to remove liquid
refrigerant
b. Oil in compressor needs to be heated to remove water
c. Oil in compressor needs to be heated for proper lubrication
d. Oil is only added for cold weather operation - correct answer -a.
Oil in compressor needs to be heated to remove liquid refrigerant
A non-technically exhaustive way to evaluate the heat
exchanger?
a. Remove plenum and inspect visually
b. Water pressure test
c. Check flame pattern when blower comes on
, Page | 4
d. Inspect register covers for soot - correct answer -c. Check
flame pattern when blower comes on
Which of the following statements is TRUE for a cooling unit
located in an attic where
damage may result from condensate overflow?
a. Attic ventilation must be increased to avoid condensation
b. Steel ducting is not allowed because of potential damage from
condensation
c. A pan with a drain or float switch is required beneath the
evaporator unit
d. A supplemental condensate pump is required - correct answer -
c. A pan with a drain or float switch is required beneath the
evaporator unit
A furnace can be located in a laundry room?
a. True
b. False - correct answer -a. True
Converting a heating system fan to cooling type fan requires?
a. Changing duct wire
b. A 2-speed or variable speed fan
