Maryland TAB Air Balance Technician
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2026 Q&A| Instant
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1. Maryland TAB Air Balance Technician Certification
Which statement best describes the primary purpose of Testing, Adjusting,
and Balancing (TAB) work in HVAC systems?
A. To design new HVAC duct layouts for buildings
B. To ensure HVAC systems deliver airflow and hydronic flow according to
design specifications
C. To install refrigeration compressors in commercial systems
D. To replace air filters and perform routine HVAC maintenance
B. To ensure HVAC systems deliver airflow and hydronic flow according to
design specifications
TAB work focuses on measuring, adjusting, and verifying HVAC system
performance so that airflow, water flow, and pressure conditions match
the engineer’s design intent and ensure proper system operation.
2. Which organizations are most commonly recognized for TAB technician
certification in Maryland and similar jurisdictions?
,A. OSHA, EPA, and DOE
B. AABC, NEBB, and TABB
C. ASHRAE, NFPA, and ICC
D. ANSI, ISO, and ASTM
B. AABC, NEBB, and TABB
TAB certification is typically issued by industry bodies such as the
Associated Air Balance Council (AABC), National Environmental Balancing
Bureau (NEBB), and the Testing, Adjusting and Balancing Bureau (TABB),
which establish standards and certification requirements.
3. A certified TAB technician is primarily responsible for which task on a
construction project?
A. Structural steel welding inspections
B. HVAC system airflow and hydronic balancing
C. Electrical panel installation and wiring
D. Roofing membrane waterproofing
B. HVAC system airflow and hydronic balancing
TAB technicians measure and adjust air and water systems in HVAC
installations to ensure systems operate efficiently and according to design
requirements.
4. Which of the following best describes airflow balancing in TAB work?
A. Increasing fan motor horsepower to boost air delivery
B. Adjusting duct dampers and terminal units to achieve required airflow
distribution
C. Installing new air conditioning units in residential homes
D. Cleaning duct interiors to remove dust buildup
B. Adjusting duct dampers and terminal units to achieve required airflow
distribution
,Air balancing involves regulating system components like dampers and
VAV boxes to ensure correct air volume reaches each space.
5. What is a key requirement for many TAB certification programs such as
NEBB or TABB?
A. At least 10 years of plumbing experience
B. No field experience is required
C. Documented field experience in HVAC testing and balancing
D. A license in electrical engineering
C. Documented field experience in HVAC testing and balancing
Most TAB certifications require hands-on field experience because
technicians must demonstrate competence in real HVAC system
measurement and adjustment.
6. Which instrument is most commonly used by TAB technicians for
measuring airflow in ducts?
A. Manometer
B. Flow hood or balancing hood
C. Infrared thermometer
D. Megohmmeter
B. Flow hood or balancing hood
A flow hood is used to measure air volume at diffusers and grilles to verify
correct airflow delivery in HVAC systems.
7. What does hydronic balancing refer to in TAB work?
A. Adjusting electrical load distribution
B. Balancing water flow in heating and cooling piping systems
C. Measuring gas pressure in combustion systems
D. Calibrating refrigeration refrigerant charge
, B. Balancing water flow in heating and cooling piping systems
Hydronic balancing ensures that heated or chilled water is distributed
properly through coils and piping loops for efficient system performance.
8. Which document is typically used as the primary reference for TAB
procedures?
A. Project safety manual
B. Manufacturer marketing brochure
C. Project design drawings and specifications
D. Employee handbook
C. Project design drawings and specifications
TAB technicians use engineering drawings and specifications to verify that
actual system performance matches design intent.
9. What is the role of a TAB report?
A. To document HVAC system performance results and adjustments
B. To certify building ownership transfer
C. To replace mechanical inspection reports
D. To design new HVAC systems
A. To document HVAC system performance results and adjustments
TAB reports provide detailed measurements and adjustments made during
balancing to confirm compliance with design requirements.
10. Which organization is widely recognized as a leading authority in
TAB certification standards?
A. NEBB
B. FAA
C. FDA
D. USGS
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2026 Q&A| Instant
Download Pdf
1. Maryland TAB Air Balance Technician Certification
Which statement best describes the primary purpose of Testing, Adjusting,
and Balancing (TAB) work in HVAC systems?
A. To design new HVAC duct layouts for buildings
B. To ensure HVAC systems deliver airflow and hydronic flow according to
design specifications
C. To install refrigeration compressors in commercial systems
D. To replace air filters and perform routine HVAC maintenance
B. To ensure HVAC systems deliver airflow and hydronic flow according to
design specifications
TAB work focuses on measuring, adjusting, and verifying HVAC system
performance so that airflow, water flow, and pressure conditions match
the engineer’s design intent and ensure proper system operation.
2. Which organizations are most commonly recognized for TAB technician
certification in Maryland and similar jurisdictions?
,A. OSHA, EPA, and DOE
B. AABC, NEBB, and TABB
C. ASHRAE, NFPA, and ICC
D. ANSI, ISO, and ASTM
B. AABC, NEBB, and TABB
TAB certification is typically issued by industry bodies such as the
Associated Air Balance Council (AABC), National Environmental Balancing
Bureau (NEBB), and the Testing, Adjusting and Balancing Bureau (TABB),
which establish standards and certification requirements.
3. A certified TAB technician is primarily responsible for which task on a
construction project?
A. Structural steel welding inspections
B. HVAC system airflow and hydronic balancing
C. Electrical panel installation and wiring
D. Roofing membrane waterproofing
B. HVAC system airflow and hydronic balancing
TAB technicians measure and adjust air and water systems in HVAC
installations to ensure systems operate efficiently and according to design
requirements.
4. Which of the following best describes airflow balancing in TAB work?
A. Increasing fan motor horsepower to boost air delivery
B. Adjusting duct dampers and terminal units to achieve required airflow
distribution
C. Installing new air conditioning units in residential homes
D. Cleaning duct interiors to remove dust buildup
B. Adjusting duct dampers and terminal units to achieve required airflow
distribution
,Air balancing involves regulating system components like dampers and
VAV boxes to ensure correct air volume reaches each space.
5. What is a key requirement for many TAB certification programs such as
NEBB or TABB?
A. At least 10 years of plumbing experience
B. No field experience is required
C. Documented field experience in HVAC testing and balancing
D. A license in electrical engineering
C. Documented field experience in HVAC testing and balancing
Most TAB certifications require hands-on field experience because
technicians must demonstrate competence in real HVAC system
measurement and adjustment.
6. Which instrument is most commonly used by TAB technicians for
measuring airflow in ducts?
A. Manometer
B. Flow hood or balancing hood
C. Infrared thermometer
D. Megohmmeter
B. Flow hood or balancing hood
A flow hood is used to measure air volume at diffusers and grilles to verify
correct airflow delivery in HVAC systems.
7. What does hydronic balancing refer to in TAB work?
A. Adjusting electrical load distribution
B. Balancing water flow in heating and cooling piping systems
C. Measuring gas pressure in combustion systems
D. Calibrating refrigeration refrigerant charge
, B. Balancing water flow in heating and cooling piping systems
Hydronic balancing ensures that heated or chilled water is distributed
properly through coils and piping loops for efficient system performance.
8. Which document is typically used as the primary reference for TAB
procedures?
A. Project safety manual
B. Manufacturer marketing brochure
C. Project design drawings and specifications
D. Employee handbook
C. Project design drawings and specifications
TAB technicians use engineering drawings and specifications to verify that
actual system performance matches design intent.
9. What is the role of a TAB report?
A. To document HVAC system performance results and adjustments
B. To certify building ownership transfer
C. To replace mechanical inspection reports
D. To design new HVAC systems
A. To document HVAC system performance results and adjustments
TAB reports provide detailed measurements and adjustments made during
balancing to confirm compliance with design requirements.
10. Which organization is widely recognized as a leading authority in
TAB certification standards?
A. NEBB
B. FAA
C. FDA
D. USGS
