1
NATIONAL HOME INSPECTOR EXAM QUESTIONS
AND CORRECT ANSWERS 2026 GET IT
RIGHT !!!
What monitors the pilot flame in a gas water heater?
A. A thermometer
B. A thermocouple
C. A thermolock
D. A pressure gauge -
-Correct Answers
B. A thermocouple
What are the 3 prohibited traps?
A. P trap, S trap and Drum Trap
B. Drum Trap, Bell Trap and P Trap
C. S Trap, Drum Trap and Bell Trap
D. S Trap, Bell Trap and P Trap -
-Correct Answers
C. S Trap, Drum Trap and Bell Trap
What does an Air Admittance Valve do?
A. It detects negative air pressure to allow air into pipes
and closes to prevent sewer gases from entering.
B. It allows air into vents from the attic
C. It detects positive air pressure to allow air into pipes
D. It allows air inside the home when negative pressure
from the outside is detected -
,2
-Correct Answers
A. It detects negative air pressure to allow air into pipes
and closes to prevent sewer gases from entering.
An accessible shutoff valve for each gas appliance
should be located where?
A. At the main gas line or within 8 feet from appliance
B. In the same room as appliance and within 6 feet from
appliance
C. On the appliance or within 15 feet from appliance
D. In the same room as appliance and within 12 feet
from appliance. -
-Correct Answers
B. In the same room as appliance and within 6 feet from
appliance
What are the 3 most common kinds of retaining walls
made from?
A. Metal, Masonry, Concrete
B. Wood, Metal, PVC
C. Wood, Masonry, Concrete
D. Gravel, Wood, Cement -
-Correct Answers
C. Wood, Masonry, Concrete
CMU stands for ____________.
A. Concrete Masonry Unit
B. Cement Masonry Unit
,3
C. Cinder Block Masonry Unit
D. Compressed Masonry Unit -
-Correct Answers
A. Concrete Masonry Unit
CMUs in taller retaining walls should be grouted and
reinforced with _______.
A. Steel
B. Mortar
C. Wood
D. Brick -
-Correct Answers
A. Steel
Retaining walls should have _______ on the outside to
secure the wall.
A. beams
B. shoring (vertical posts)
C. pillars
D. columns -
-Correct Answers
B. shoring (vertical posts)
Retaining walls can be anchored through the soil using
_____________.
A. concrete
B. concrete and tie-backs
C. deadman and tie-backs
, 4
D. shoring posts -
-Correct Answers
C. deadman, tie-backs
Proper slope away from foundation within the first 10
feet should be how many inches?
A. 5 inches
B. 6 inches
C. 4 inches
D. 8 inches -
-Correct Answers
B. 6 inches
Spalling and efflorescence is usually an indication of
_______________.
A. An earthquake
B. Foundation damage
C. Settlement
D. Water management problems -
-Correct Answers
D. Water management problems
What is the crumbling of surface bricks, blocks or
concrete called?
A. Spalling
B. Efflorescence
C. Settlement
D. Step Crack -
NATIONAL HOME INSPECTOR EXAM QUESTIONS
AND CORRECT ANSWERS 2026 GET IT
RIGHT !!!
What monitors the pilot flame in a gas water heater?
A. A thermometer
B. A thermocouple
C. A thermolock
D. A pressure gauge -
-Correct Answers
B. A thermocouple
What are the 3 prohibited traps?
A. P trap, S trap and Drum Trap
B. Drum Trap, Bell Trap and P Trap
C. S Trap, Drum Trap and Bell Trap
D. S Trap, Bell Trap and P Trap -
-Correct Answers
C. S Trap, Drum Trap and Bell Trap
What does an Air Admittance Valve do?
A. It detects negative air pressure to allow air into pipes
and closes to prevent sewer gases from entering.
B. It allows air into vents from the attic
C. It detects positive air pressure to allow air into pipes
D. It allows air inside the home when negative pressure
from the outside is detected -
,2
-Correct Answers
A. It detects negative air pressure to allow air into pipes
and closes to prevent sewer gases from entering.
An accessible shutoff valve for each gas appliance
should be located where?
A. At the main gas line or within 8 feet from appliance
B. In the same room as appliance and within 6 feet from
appliance
C. On the appliance or within 15 feet from appliance
D. In the same room as appliance and within 12 feet
from appliance. -
-Correct Answers
B. In the same room as appliance and within 6 feet from
appliance
What are the 3 most common kinds of retaining walls
made from?
A. Metal, Masonry, Concrete
B. Wood, Metal, PVC
C. Wood, Masonry, Concrete
D. Gravel, Wood, Cement -
-Correct Answers
C. Wood, Masonry, Concrete
CMU stands for ____________.
A. Concrete Masonry Unit
B. Cement Masonry Unit
,3
C. Cinder Block Masonry Unit
D. Compressed Masonry Unit -
-Correct Answers
A. Concrete Masonry Unit
CMUs in taller retaining walls should be grouted and
reinforced with _______.
A. Steel
B. Mortar
C. Wood
D. Brick -
-Correct Answers
A. Steel
Retaining walls should have _______ on the outside to
secure the wall.
A. beams
B. shoring (vertical posts)
C. pillars
D. columns -
-Correct Answers
B. shoring (vertical posts)
Retaining walls can be anchored through the soil using
_____________.
A. concrete
B. concrete and tie-backs
C. deadman and tie-backs
, 4
D. shoring posts -
-Correct Answers
C. deadman, tie-backs
Proper slope away from foundation within the first 10
feet should be how many inches?
A. 5 inches
B. 6 inches
C. 4 inches
D. 8 inches -
-Correct Answers
B. 6 inches
Spalling and efflorescence is usually an indication of
_______________.
A. An earthquake
B. Foundation damage
C. Settlement
D. Water management problems -
-Correct Answers
D. Water management problems
What is the crumbling of surface bricks, blocks or
concrete called?
A. Spalling
B. Efflorescence
C. Settlement
D. Step Crack -
