ACG CxA Exam Prep – 100 Practice
Questions & Study Guide (2024/2025)
This comprehensive practice guide is based on the 2024 updates for
the AABC Commissioning Group (ACG) Certified Commissioning
Authority (CxA) exam. It covers core concepts, team structures,
comprehensive and construction commissioning phases,
retro/re-commissioning, key documentation, and organizational
structures.
SECTION 1: CORE DEFINITIONS & CONCEPTS
Question 1
Comprehensive Commissioning starts at the inception of a building
project during which phase and continues through which phase?
A) Starts during construction and ends at building turnover
B) Starts at project inception during pre-design and continues through
post-acceptance
C) Starts after construction is complete to test systems
D) Starts at design phase and ends at construction completion
Answer: B
Rationale: Comprehensive Commissioning starts at the inception of a
building project during the pre-design phase and continues through
the post-acceptance phase. This early involvement allows the
commissioning authority to influence project planning and design
,from the beginning, cultivating a quality management focus among all
team members.
Question 2
Which of the following are typical members of the Cx Team? (Select
all that apply)
A) Owner and End User
B) Architect and Engineers
C) Commissioning Authority
D) All Contractors (Mechanical, Electrical, Sheet Metal)
E) TAB Agency
F) General/Construction Manager
G) Owner's O&M Staff
Answer: All of the above (A-G)
Rationale: A complete Cx team includes representatives from all
stakeholders: the owner and end users, the design team (architects
and engineers), all relevant contractors (mechanical, electrical, sheet
metal, controls), the Testing, Adjusting, and Balancing (TAB) agency,
the general/construction manager, and the owner's operations and
maintenance staff.
Question 3
If the project uses the traditional plan and spec process, the
commissioning authority will typically report directly to:
A) The General Contractor
B) The Architect
,C) The Owner
D) The Mechanical Engineer
Answer: C
Rationale: In the traditional plan and spec project delivery method, the
commissioning authority reports directly to the owner to maintain
independence and ensure the owner's interests are protected.
Question 4
Which statements correctly identify the CxA's role? (Select all that
apply)
A) The CxA leads the commissioning process and works cooperatively
with designers and contractors, but always in the owner's interest
B) The CxA is responsible for designing the HVAC system
C) The CxA facilitates communication and coordination among
designers, contractors, and suppliers
D) The CxA manages the construction budget
Answer: A and C
Rationale: The CxA's primary role is to lead the commissioning
process, facilitate communication among all parties, and ensure the
owner's interests are represented. The CxA does not design systems
(which is the engineer's role) nor manage the construction budget.
Question 5
What is the primary reason for the CxA to be independent from the
contractor?
, A) To reduce project costs
B) To ensure objective verification of system performance
C) To speed up the construction schedule
D) To eliminate the need for design review
Answer: B
Rationale: Independence ensures the CxA can provide objective
verification of system performance without bias from financial
relationships with contractors or vendors.
Question 6
What is the primary purpose of the Owner's Project Requirements
(OPR) document?
A) To document the construction budget
B) To capture the owner's measurable performance expectations
C) To select the construction contractor
D) To define the project schedule
Answer: B
Rationale: The Owner's Project Requirements (OPR) captures the
owner's measurable performance expectations and serves as the
baseline for all commissioning activities. It is developed at the
project's inception and guides the entire commissioning process.
Question 7
What is a typical deliverable of the CxA at project close-out?
Questions & Study Guide (2024/2025)
This comprehensive practice guide is based on the 2024 updates for
the AABC Commissioning Group (ACG) Certified Commissioning
Authority (CxA) exam. It covers core concepts, team structures,
comprehensive and construction commissioning phases,
retro/re-commissioning, key documentation, and organizational
structures.
SECTION 1: CORE DEFINITIONS & CONCEPTS
Question 1
Comprehensive Commissioning starts at the inception of a building
project during which phase and continues through which phase?
A) Starts during construction and ends at building turnover
B) Starts at project inception during pre-design and continues through
post-acceptance
C) Starts after construction is complete to test systems
D) Starts at design phase and ends at construction completion
Answer: B
Rationale: Comprehensive Commissioning starts at the inception of a
building project during the pre-design phase and continues through
the post-acceptance phase. This early involvement allows the
commissioning authority to influence project planning and design
,from the beginning, cultivating a quality management focus among all
team members.
Question 2
Which of the following are typical members of the Cx Team? (Select
all that apply)
A) Owner and End User
B) Architect and Engineers
C) Commissioning Authority
D) All Contractors (Mechanical, Electrical, Sheet Metal)
E) TAB Agency
F) General/Construction Manager
G) Owner's O&M Staff
Answer: All of the above (A-G)
Rationale: A complete Cx team includes representatives from all
stakeholders: the owner and end users, the design team (architects
and engineers), all relevant contractors (mechanical, electrical, sheet
metal, controls), the Testing, Adjusting, and Balancing (TAB) agency,
the general/construction manager, and the owner's operations and
maintenance staff.
Question 3
If the project uses the traditional plan and spec process, the
commissioning authority will typically report directly to:
A) The General Contractor
B) The Architect
,C) The Owner
D) The Mechanical Engineer
Answer: C
Rationale: In the traditional plan and spec project delivery method, the
commissioning authority reports directly to the owner to maintain
independence and ensure the owner's interests are protected.
Question 4
Which statements correctly identify the CxA's role? (Select all that
apply)
A) The CxA leads the commissioning process and works cooperatively
with designers and contractors, but always in the owner's interest
B) The CxA is responsible for designing the HVAC system
C) The CxA facilitates communication and coordination among
designers, contractors, and suppliers
D) The CxA manages the construction budget
Answer: A and C
Rationale: The CxA's primary role is to lead the commissioning
process, facilitate communication among all parties, and ensure the
owner's interests are represented. The CxA does not design systems
(which is the engineer's role) nor manage the construction budget.
Question 5
What is the primary reason for the CxA to be independent from the
contractor?
, A) To reduce project costs
B) To ensure objective verification of system performance
C) To speed up the construction schedule
D) To eliminate the need for design review
Answer: B
Rationale: Independence ensures the CxA can provide objective
verification of system performance without bias from financial
relationships with contractors or vendors.
Question 6
What is the primary purpose of the Owner's Project Requirements
(OPR) document?
A) To document the construction budget
B) To capture the owner's measurable performance expectations
C) To select the construction contractor
D) To define the project schedule
Answer: B
Rationale: The Owner's Project Requirements (OPR) captures the
owner's measurable performance expectations and serves as the
baseline for all commissioning activities. It is developed at the
project's inception and guides the entire commissioning process.
Question 7
What is a typical deliverable of the CxA at project close-out?
