ACG CXA EXAM QUESTIONS WITH VERIFIED ANSWERS 2026 | Complete Review Pack | A+

ACG CXA EXAM QUESTIONS WITH VERIFIED
ANSWERS 2026 | Complete Review Pack | A+
• ASHRAE. CORRECT ANSWER: American Society of Heating, Refrigerating and Air-
Conditioning Engineers

• ANSI. CORRECT ANSWER: American National Standards Institute

• ASTM. CORRECT ANSWER: ASTM International, formerly known as American
Society for Testing and Materials

• ISO. CORRECT ANSWER: International Organization for Standardization

• ASME. CORRECT ANSWER: American Society of Mechanical Engineers

• NFPA. CORRECT ANSWER: National Fire Protection Association

• SMACNA. CORRECT ANSWER: Sheet Metal and Air Conditioning Contractors'
National Association

• What does EBCx stand for?. CORRECT ANSWER: Existing Building Commissioning

• What does FIM stand for?. CORRECT ANSWER: Facility improvement measure

• What does NETA stand for?. CORRECT ANSWER: International Electricl Testing
Associaiton

• What does NFPA stand for?. CORRECT ANSWER: National Fire Protection
Associaiton

• What does NICET stand for?. CORRECT ANSWER: National Institute for Certificaiton
in Engineering Technology

• What does CFR stand for?. CORRECT ANSWER: Current Facility Requirements

• Define ACG. CORRECT ANSWER: AABC Commissioning Group. A non-profit
association dedicated to the advancement of the building commissioning industry

• What does AABC stand for?. CORRECT ANSWER: Associated air balance council

• What does AI stand for?. CORRECT ANSWER: Analog Input

• What does AO stand for?. CORRECT ANSWER: Analog Output

• What does ATC stand for?. CORRECT ANSWER: Automatic Temperature Controls

,• What does BAS stand for?. CORRECT ANSWER: Building Automation system

• What does CA stand for?. CORRECT ANSWER: Commissioning Authority

• What does CT stand for?. CORRECT ANSWER: Cooling Tower

• What does CHWR stand for?. CORRECT ANSWER: Chilled water return

• What does CHWS stand for?. CORRECT ANSWER: Chilled water supply

• What does CWR stand for?. CORRECT ANSWER: Condenser water return

• What does CWS stand for?. CORRECT ANSWER: Condenser water supply

• What does DDC stand for?. CORRECT ANSWER: Direct Digital Control

• What does DI stand for?. CORRECT ANSWER: Digital Input

• What does DID stand for?. CORRECT ANSWER: Design Intent Document

• What does DO stand for?. CORRECT ANSWER: Digital output

• Define FPT. CORRECT ANSWER: Functional Preformance Test. Process of testing
the DDC/BAS/EMS in every possible condition and verifying correct equipment
response. This is the "Heart of the commissioning process".

• What does HVAC stand for?. CORRECT ANSWER: Heating, Ventilation & Air
Conditioning

• What does IAQ stand for?. CORRECT ANSWER: Indoor Air Quality

• What does LEED stand for?. CORRECT ANSWER: Leadership in Energy and
Environmental Design, USGBC trademarked "Green Building Rating System"

• What doesO&M stand for?. CORRECT ANSWER: Operation and Maintenance

• What does OA stand for?. CORRECT ANSWER: Outside Air

• What does PM stand for?. CORRECT ANSWER: Preventive Maintenance

• What does RFP stand for?. CORRECT ANSWER: Request for proposal

• What does RFT stand for?. CORRECT ANSWER: Resolution Tracking Form

• What does SVC stand for?. CORRECT ANSWER: System Verificaiton Checklist

,• Define TAB. CORRECT ANSWER: Testing, Adjusting, and Balancing or Test and
Balance. Process of controlling air and water flow through HVAC equipment.
Recommended that a third party be directly contracted with owner

• What does TBE stand for?. CORRECT ANSWER: Test and Balance Engineer

• What does USGBC stand for?. CORRECT ANSWER: United States Green Building
Council

• What does ECM stand for?. CORRECT ANSWER: Energy Conservation Measure

• What does ANSI stand for?. CORRECT ANSWER: Americans National Standards
Institute

• What does ASTM stand for?. CORRECT ANSWER: American Society for Testing and
Materials International

• What does ISO stand for?. CORRECT ANSWER: International Organization for
Standards

• What does ARI or AHRI stand for?. CORRECT ANSWER: Air Conditionaing,
(Heating), and Refrigeration Instiute

• What does ACCA stand for?. CORRECT ANSWER: Air Conditioning Contractors of
America

• Define UL. CORRECT ANSWER: Underwriters Laboraories - Demonstrates safety,
conformance, sustainablility, etc.

• What does ASME stand for?. CORRECT ANSWER: American Society for Mechanical
Enginners

• What does SMACNA stand for?. CORRECT ANSWER: Sheet Metal and Air
Conditioning Contractos National Institute

• Define Commissioning. CORRECT ANSWER: A systematic process that facilities and
ensure the required communication, coordination testing, and verification and results in
the delivery of a building whose HVAC systems preform as intended.

• During what phase should Commissioning be incorporated?. CORRECT ANSWER:
For best results Commissioning should be included in all phases of the design and
construction process

• Typically how much does Commissioning cost?. CORRECT ANSWER:
Comprehensive HVAC Comissioning cost 2%-5% of HVAC construction cost

, • Define RFQ. CORRECT ANSWER: Request for Qualifications. Document asking for
details concerning previous relevant Cx experience. Information includes:

• Define Re-Commissioning. CORRECT ANSWER: Periodically Re-commissioning
systems that were commissioned when they were new. The purpose is to diagnose the
cause of ongoing, unresolved problems or as part of a planned preventive maintenance
program to prevent issued from arising over time.

• Define Retro-Commissioning. CORRECT ANSWER: Commissioning of existing
systems that were not commissioned when they were new.

• Name the different contruciton models. CORRECT ANSWER: Plan and spec, Design-
Build

• What is included in the Pre-design phase for Comprehensive HVAC Cx?. CORRECT
ANSWER: 1. Cx is established as part of project
2. Owner select CxA
3. Develop Cx Scope
4. CxA review design intent document

• What is included in the Design phase for Comprehensive HVAC Cx?. CORRECT
ANSWER: 1. Review design to ensure it accommodates Cx
2. Write Cx specifications defining contractor responsibilities
3. Establish project schedule

• What is included in the Construction phase for Comprehensive HVAC Cx?. CORRECT
ANSWER: 1. CxA reviews contractor submittals
2. CxA updated Cx plan
3. Cx process is coordinated-through project schedule, Cx plan, and commissioning
meetings
4. Carry out document systems verification checks
5. Carry out the document equipment and system start-ups
6. TAB agency completes and documents test and balance work

• What is included in the Acceptance phase for Comprehensive HVAC Cx?. CORRECT
ANSWER: 1. Carry out functional performance tests on all HVAC systems
2. Train the O&M staff for effective, ongoing operations and maintenance of all systems
3. Provide full documentation

• What is included in the Post-Acceptance phase for Comprehensive HVAC Cx?.
CORRECT ANSWER: 1. Correct any deficiencies, and carry out any required re-testing
2. Carry out any required "off-season" tests
3. Update documentation as required