ICC Commercial Energy Inspector Exam Practice
Questions & Correct Answers with Detailed
Explanations
Exam: ICC Commercial Energy Inspector (77)
Format: 60 multiple-choice questions, open-book, 2-hour time limit
Passing Score: 75 (scaled)
Primary Reference: 2024 International Energy Conservation Code (IECC),
Commercial Provisions
Exam Content Outline:
• General Plan Review Issues (7%)
• Building Envelope (38%)
• Mechanical Systems (25%)
• Electrical Power and Lighting Systems (26%)
• Building Service Water Heating Systems and Equipment (4%)
Section 1: General Administration & Scope (Q1–Q15)
1. According to the IECC Commercial Provisions, which buildings are
required to comply with the commercial energy code?
A. Only buildings over 50,000 square feet
B. All commercial buildings and residential buildings over three stories
above grade plane
C. Only office buildings and retail spaces
D. Only buildings that use more than 100 kW of electrical service
Correct Answer: B
Explanation / Rationale:
Per IECC C101.4, the commercial provisions apply to all commercial
buildings as well as residential buildings that are more than three stories in
height above grade plane (such as mid- and high-rise apartments and
,hotels). Option A is incorrect because the code does not use a square-
footage threshold for applicability. Option C is incorrect because the code
applies to all commercial occupancies. Option D is incorrect because
electrical service size is not the determining factor.
2. Which of the following buildings is EXEMPT from the IECC
commercial energy code?
A. A 6-story hotel
B. A 50,000 square foot warehouse with conditioned office space
C. A low-energy building where the peak design energy usage is less than
3.4 Btu/h-ft² or 1.0 W/ft² of floor area
D. A 3-story mixed-use retail and apartment building
Correct Answer: C
Explanation / Rationale:
Per IECC C101.4.1, low-energy buildings with a peak design energy usage
less than 3.4 Btu/h-ft² or 1.0 W/ft² of floor area for space conditioning
purposes are exempt from compliance. Option A is incorrect because a 6-
story hotel is a commercial building covered by the commercial provisions.
Option B is incorrect because a warehouse with conditioned space must
comply. Option D is incorrect because a mixed-use building with residential
units is subject to the commercial provisions if it exceeds three stories, and
the presence of dwelling units does not create an exemption.
3. When an addition is made to an existing commercial building,
which provision of the IECC applies to the addition?
A. The addition is exempt from the energy code
B. Only the addition must comply with the requirements for new
construction
C. The entire building, including existing portions, must be brought into
compliance
D. Only the building envelope of the addition must comply
,Correct Answer: B
Explanation / Rationale:
Per IECC C502.1, additions to existing buildings must comply with the
requirements of the code for new construction, but the existing building is
not required to be brought into compliance. Option A is incorrect because
additions are not exempt. Option C is incorrect because the code does not
require the entire existing building to be upgraded. Option D is incorrect
because the addition must comply with all applicable provisions, not just
the envelope.
4. What is the primary purpose of the International Energy
Conservation Code (IECC) in commercial buildings?
A. Ensure structural stability
B. Reduce fire hazards
C. Promote energy efficiency
D. Improve plumbing systems
Correct Answer: C
Explanation / Rationale:
The IECC is designed to set minimum requirements for energy-efficient
building design, construction, and operation in commercial buildings.
Option A is incorrect because structural stability is addressed by the IBC.
Option B is incorrect because fire safety is addressed by the IFC. Option D
is incorrect because plumbing is addressed by the IPC.
5. What is the primary purpose of a commercial energy inspection?
A. To determine building aesthetics
B. To evaluate structural integrity
C. To verify compliance with energy codes and efficiency standards
D. To inspect plumbing systems
Correct Answer: C
, Explanation / Rationale:
The primary goal of a commercial energy inspection is to ensure that a
building meets current energy codes and efficiency requirements, reducing
energy waste and improving building performance. Option A is incorrect
because aesthetics are not an energy code concern. Option B is incorrect
because structural integrity is outside the scope of an energy inspection.
Option D is incorrect because plumbing systems are not the focus of an
energy inspection.
6. Which chapter of the 2024 IECC contains the principal commercial
energy-efficiency requirements?
A. Chapter 2
B. Chapter 3
C. Chapter 4
D. Chapter 6
Correct Answer: C
Explanation / Rationale:
Chapter 4, Commercial Energy Efficiency, contains the principal
commercial requirements. Option A is incorrect because Chapter 2 is
definitions. Option B is incorrect because Chapter 3 is general
requirements. Option D is incorrect because Chapter 6 contains additional
efficiency requirements.
7. Which section addresses commercial building thermal-envelope
requirements?
A. C401
B. C402
C. C403
D. C405
Correct Answer: B
Questions & Correct Answers with Detailed
Explanations
Exam: ICC Commercial Energy Inspector (77)
Format: 60 multiple-choice questions, open-book, 2-hour time limit
Passing Score: 75 (scaled)
Primary Reference: 2024 International Energy Conservation Code (IECC),
Commercial Provisions
Exam Content Outline:
• General Plan Review Issues (7%)
• Building Envelope (38%)
• Mechanical Systems (25%)
• Electrical Power and Lighting Systems (26%)
• Building Service Water Heating Systems and Equipment (4%)
Section 1: General Administration & Scope (Q1–Q15)
1. According to the IECC Commercial Provisions, which buildings are
required to comply with the commercial energy code?
A. Only buildings over 50,000 square feet
B. All commercial buildings and residential buildings over three stories
above grade plane
C. Only office buildings and retail spaces
D. Only buildings that use more than 100 kW of electrical service
Correct Answer: B
Explanation / Rationale:
Per IECC C101.4, the commercial provisions apply to all commercial
buildings as well as residential buildings that are more than three stories in
height above grade plane (such as mid- and high-rise apartments and
,hotels). Option A is incorrect because the code does not use a square-
footage threshold for applicability. Option C is incorrect because the code
applies to all commercial occupancies. Option D is incorrect because
electrical service size is not the determining factor.
2. Which of the following buildings is EXEMPT from the IECC
commercial energy code?
A. A 6-story hotel
B. A 50,000 square foot warehouse with conditioned office space
C. A low-energy building where the peak design energy usage is less than
3.4 Btu/h-ft² or 1.0 W/ft² of floor area
D. A 3-story mixed-use retail and apartment building
Correct Answer: C
Explanation / Rationale:
Per IECC C101.4.1, low-energy buildings with a peak design energy usage
less than 3.4 Btu/h-ft² or 1.0 W/ft² of floor area for space conditioning
purposes are exempt from compliance. Option A is incorrect because a 6-
story hotel is a commercial building covered by the commercial provisions.
Option B is incorrect because a warehouse with conditioned space must
comply. Option D is incorrect because a mixed-use building with residential
units is subject to the commercial provisions if it exceeds three stories, and
the presence of dwelling units does not create an exemption.
3. When an addition is made to an existing commercial building,
which provision of the IECC applies to the addition?
A. The addition is exempt from the energy code
B. Only the addition must comply with the requirements for new
construction
C. The entire building, including existing portions, must be brought into
compliance
D. Only the building envelope of the addition must comply
,Correct Answer: B
Explanation / Rationale:
Per IECC C502.1, additions to existing buildings must comply with the
requirements of the code for new construction, but the existing building is
not required to be brought into compliance. Option A is incorrect because
additions are not exempt. Option C is incorrect because the code does not
require the entire existing building to be upgraded. Option D is incorrect
because the addition must comply with all applicable provisions, not just
the envelope.
4. What is the primary purpose of the International Energy
Conservation Code (IECC) in commercial buildings?
A. Ensure structural stability
B. Reduce fire hazards
C. Promote energy efficiency
D. Improve plumbing systems
Correct Answer: C
Explanation / Rationale:
The IECC is designed to set minimum requirements for energy-efficient
building design, construction, and operation in commercial buildings.
Option A is incorrect because structural stability is addressed by the IBC.
Option B is incorrect because fire safety is addressed by the IFC. Option D
is incorrect because plumbing is addressed by the IPC.
5. What is the primary purpose of a commercial energy inspection?
A. To determine building aesthetics
B. To evaluate structural integrity
C. To verify compliance with energy codes and efficiency standards
D. To inspect plumbing systems
Correct Answer: C
, Explanation / Rationale:
The primary goal of a commercial energy inspection is to ensure that a
building meets current energy codes and efficiency requirements, reducing
energy waste and improving building performance. Option A is incorrect
because aesthetics are not an energy code concern. Option B is incorrect
because structural integrity is outside the scope of an energy inspection.
Option D is incorrect because plumbing systems are not the focus of an
energy inspection.
6. Which chapter of the 2024 IECC contains the principal commercial
energy-efficiency requirements?
A. Chapter 2
B. Chapter 3
C. Chapter 4
D. Chapter 6
Correct Answer: C
Explanation / Rationale:
Chapter 4, Commercial Energy Efficiency, contains the principal
commercial requirements. Option A is incorrect because Chapter 2 is
definitions. Option B is incorrect because Chapter 3 is general
requirements. Option D is incorrect because Chapter 6 contains additional
efficiency requirements.
7. Which section addresses commercial building thermal-envelope
requirements?
A. C401
B. C402
C. C403
D. C405
Correct Answer: B
