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
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
