ALABAMA HVAC EXAM PRACTICE TEST QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
HVAC Fundamentals and Thermodynamics
Heating Systems Installation and Maintenance
Air Conditioning and Refrigeration Systems
Ductwork Design and Air Distribution
Electrical Systems and Controls
Safety Standards and OSHA Compliance
Alabama State Codes and Licensing Regulations
Load Calculations and System Sizing
Troubleshooting and Diagnostic Procedures
Professional Ethics and Contracting Business Practices
,The Alabama HVAC Exam Practice Test is designed to prepare candidates for successful completion of the
official Alabama HVAC Contractor Licensing Examination. This assessment evaluates comprehensive
knowledge and practical skills required for profesional HVAC work in residential and commercial settings.
The test consists of multiple-choice and scenario-based questions that mirror the structure and difficulty of the
actual licensing exam. Candidates will be assessed on their ability to apply technical concepts, interpret codes,
perform calculations, and make sound decisions in real-world HVAC situations. Emphasis is placed on safety
compliance, regulatory requirements, equipment installation, system troubleshooting, and ethical
professional standards. This practice test helps identify knowledge gaps and builds confidence before taking
the high-stakes licensing examination.
Section One: Questions 1–100
Question 1
What is the primary purpose of a refrigerant compressor in an HVAC system?
A. To remove moisture from the refrigerant
B. To circulate refrigerant and increase its pressure
C. To filter contaminants from the refrigerant line
D. To convert liquid refrigerant to vapor
🟢 B. To circulate refrigerant and increase its pressure
🔴 RATIONALE: The compressor's fundamental role is to pump refrigerant through the system while raising
its pressure and temperature, enabling heat rejection in the condenser.
,Question 2
Which Alabama state agency governs HVAC contractor licensing requirements?
A. Alabama Department of Environmental Management
B. Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors
C. Alabama Occupational Safety and Health Administration
D. Alabama Building Codes Commission
🟢 B. Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors
🔴 RATIONALE: The Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors (HACR) is
the official state agency responsible for licensing HVAC contractors in Alabama.
Question 3
What is the minimum passing score required for the Alabama HVAC Contractor Exam?
A. 65%
B. 70%
C. 75%
D. 80%
🟢 B. 70%
🔴 RATIONALE: Both the HVAC Contractor Exam and Refrigeration Contractor Exam in Alabama require a
70% pass rate to obtain licensure.
, Question 4
Which thermodynamic process occurs in the evaporator coil of an air conditioning system?
A. Condensation of refrigerant from gas to liquid
B. Compression of refrigerant vapor
C. Evaporation of refrigerant from liquid to gas while absorbing heat
D. Sublimation of refrigerant
🟢 C. Evaporation of refrigerant from liquid to gas while absorbing heat
🔴 RATIONALE: In the evaporator, low-pressure liquid refrigerant absorbs heat from indoor air and
evaporates into a gas, which is the cooling process.
Question 5
When calculating heat load for a residential HVAC system in Alabama, which factor is MOST critical?
A. Number of windows only
B. Building orientation and solar gain
C. Color of exterior paint
D. Type of flooring material
🟢 B. Building orientation and solar gain
🔴 RATIONALE: Building orientation significantly affects solar heat gain, which is a major component of
cooling load calculations, especially in Alabama's hot climate.
ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
HVAC Fundamentals and Thermodynamics
Heating Systems Installation and Maintenance
Air Conditioning and Refrigeration Systems
Ductwork Design and Air Distribution
Electrical Systems and Controls
Safety Standards and OSHA Compliance
Alabama State Codes and Licensing Regulations
Load Calculations and System Sizing
Troubleshooting and Diagnostic Procedures
Professional Ethics and Contracting Business Practices
,The Alabama HVAC Exam Practice Test is designed to prepare candidates for successful completion of the
official Alabama HVAC Contractor Licensing Examination. This assessment evaluates comprehensive
knowledge and practical skills required for profesional HVAC work in residential and commercial settings.
The test consists of multiple-choice and scenario-based questions that mirror the structure and difficulty of the
actual licensing exam. Candidates will be assessed on their ability to apply technical concepts, interpret codes,
perform calculations, and make sound decisions in real-world HVAC situations. Emphasis is placed on safety
compliance, regulatory requirements, equipment installation, system troubleshooting, and ethical
professional standards. This practice test helps identify knowledge gaps and builds confidence before taking
the high-stakes licensing examination.
Section One: Questions 1–100
Question 1
What is the primary purpose of a refrigerant compressor in an HVAC system?
A. To remove moisture from the refrigerant
B. To circulate refrigerant and increase its pressure
C. To filter contaminants from the refrigerant line
D. To convert liquid refrigerant to vapor
🟢 B. To circulate refrigerant and increase its pressure
🔴 RATIONALE: The compressor's fundamental role is to pump refrigerant through the system while raising
its pressure and temperature, enabling heat rejection in the condenser.
,Question 2
Which Alabama state agency governs HVAC contractor licensing requirements?
A. Alabama Department of Environmental Management
B. Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors
C. Alabama Occupational Safety and Health Administration
D. Alabama Building Codes Commission
🟢 B. Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors
🔴 RATIONALE: The Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors (HACR) is
the official state agency responsible for licensing HVAC contractors in Alabama.
Question 3
What is the minimum passing score required for the Alabama HVAC Contractor Exam?
A. 65%
B. 70%
C. 75%
D. 80%
🟢 B. 70%
🔴 RATIONALE: Both the HVAC Contractor Exam and Refrigeration Contractor Exam in Alabama require a
70% pass rate to obtain licensure.
, Question 4
Which thermodynamic process occurs in the evaporator coil of an air conditioning system?
A. Condensation of refrigerant from gas to liquid
B. Compression of refrigerant vapor
C. Evaporation of refrigerant from liquid to gas while absorbing heat
D. Sublimation of refrigerant
🟢 C. Evaporation of refrigerant from liquid to gas while absorbing heat
🔴 RATIONALE: In the evaporator, low-pressure liquid refrigerant absorbs heat from indoor air and
evaporates into a gas, which is the cooling process.
Question 5
When calculating heat load for a residential HVAC system in Alabama, which factor is MOST critical?
A. Number of windows only
B. Building orientation and solar gain
C. Color of exterior paint
D. Type of flooring material
🟢 B. Building orientation and solar gain
🔴 RATIONALE: Building orientation significantly affects solar heat gain, which is a major component of
cooling load calculations, especially in Alabama's hot climate.
