Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Exam Book Package

The Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Exam Book Package is designed for contractors preparing for the Arizona commercial HVAC and refrigeration trade exam. This package brings together important code, safety, mechanical, fuel gas, refrigeration, boiler, duct design, and duct sizing references that support a stronger study process for commercial air conditioning and refrigeration work.

Commercial HVAC and refrigeration contracting requires more than general field experience. Candidates should be comfortable with mechanical systems, fuel gas requirements, refrigeration principles, warm air heating, ventilation, evaporative cooling, controls, motors, boiler fundamentals, water piping, steam and chilled water systems, testing, balancing, inspection, sizing, estimating, and OSHA construction safety. This book package helps candidates study those areas using references tied to exam preparation and trade knowledge.

The Arizona C-39 commercial air conditioning and refrigeration path is connected to the installation, alteration, and repair of refrigeration and evaporative cooling systems, heating systems, ventilation systems, duct work, air filtering devices, water treatment devices, pneumatic or electrical controls, control piping, insulation of refrigerant pipes and ductwork, vibration isolation materials and devices, fuel piping, water and gas piping from the service connection to the equipment served, and testing and balancing of refrigerant, cooling, heating, and air handling systems.

For a timed open book contractor exam, the books matter because candidates must know both the trade and the references. The strongest preparation combines reading, code navigation, tabbing, highlighting, practice lookup, and review of practical HVAC and refrigeration concepts. Candidates should become familiar with how each book is organized before testing so they can move quickly from the question to the correct topic area.

This Arizona C-39 Exam Book Package is a strong fit for commercial HVAC professionals, refrigeration technicians, mechanical contractors, installers, service professionals, and qualifying parties preparing for the Arizona commercial air conditioning and refrigeration contractor exam. It supports study for code-based questions, safety questions, and trade knowledge questions related to the systems and equipment used in commercial work.

Exam Details

The Arizona air conditioning and refrigeration trade examination includes 80 questions, a 210-minute time limit, and a minimum passing score of 70%. The exam content outline includes refrigeration, air conditioning, warm air heating, controls and motors, boilers, ventilation, evaporative coolers, fuel piping systems, water piping systems, steam, hot, chilled, and condensing water, testing, balancing, inspection, sizing, and estimating.

The exam is built around both reference-based content and general trade knowledge. Candidates may be asked to apply information from mechanical code, fuel gas code, OSHA safety standards, and HVAC-related trade references. Some questions may be direct lookup questions, while others may require the candidate to understand the system being discussed before locating or applying the correct information.

The content outline gives candidates a useful study map. Refrigeration, air conditioning, and warm air heating each represent major subject areas. Controls and motors are also important because commercial HVAC and refrigeration work often requires a working understanding of equipment operation, control circuits, motor function, and system response. Additional topics such as boilers, ventilation, evaporative coolers, fuel piping, water piping, and testing and balancing help round out the commercial mechanical knowledge expected of a contractor candidate.

Because the exam is timed, candidates should practice working with the books under time pressure. Having the correct reference is only part of the preparation. Candidates should know where chapters, definitions, tables, sizing information, safety sections, and index entries are located. A well-organized study plan helps reduce the amount of time spent searching during the exam.

Open Book Test

The Arizona air conditioning and refrigeration contractor trade exam is an open book test. Candidates are responsible for bringing their own approved references to the examination center. For this exam, the exam-center reference materials include Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, and International Mechanical Code. The 2018 editions are used for the International Fuel Gas Code and International Mechanical Code.

Reference materials may be highlighted, underlined, annotated, and indexed before the examination session. Candidates may not write, highlight, underline, or index the references during the exam. Any book preparation should be completed before test day, including permanent tabs, useful highlighting, and clean annotations that help the candidate locate information quickly.

References may be tabbed or indexed with permanent tabs only. Permanent tabs are tabs that would tear the page if removed. Temporary tabs, removable notes, Post-It notes, or any tabs that can be removed without tearing the page are not allowed and must be removed before the exam begins. Candidates may also use a silent, nonprinting, non-programmable calculator in the examination center.

Several references in this package are valuable for study but are not exam-room-approved references. Modern Refrigeration and Air Conditioning, Low Pressure Boilers, and Ductulator are supplemental preparation materials. Manual D is also included as a duct design study reference. These materials help strengthen HVAC understanding but should not be treated as exam-center references unless specifically allowed by the current testing instructions.

Open book testing rewards preparation. Candidates should not wait until exam day to use the references for the first time. The best approach is to study the books, mark important areas properly, practice lookup, and learn which reference applies to each type of question.

Licensing Steps

Arizona contractor licensing is handled by the Arizona Registrar of Contractors. A candidate pursuing the Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) license should begin by confirming that the commercial air conditioning and refrigeration classification matches the work the business intends to perform.

After confirming the correct license classification, the candidate should review the required examination path. Contractor licensing in Arizona may include trade examination requirements, statutes and rules requirements, qualifying party requirements, experience requirements, bonding, business entity information, and application documentation. The trade exam book package supports preparation for the technical examination portion of the process.

The qualifying party is responsible for demonstrating the knowledge and experience required for the classification. Candidates should prepare for the trade exam using the approved references, schedule the examination through the proper testing process, and follow the exam center procedures for identification, permitted materials, and conduct.

After completing the required exam steps, the applicant continues through the Arizona contractor license application process. This may include submitting the license application, naming the qualifying party, satisfying experience requirements, meeting bonding requirements, and complying with other state licensing rules that apply to the business and classification.

This book package does not replace the licensing application process, but it supports the study portion of the licensing path. Candidates should use the books to prepare for the exam while following the current Arizona Registrar of Contractors application requirements for licensing.

State Requirements

Arizona issues contractor licenses for commercial, residential, and dual classifications. Commercial air conditioning and refrigeration work is tied to commercial mechanical systems and related HVAC and refrigeration activities. Candidates preparing for this exam should understand the scope of work and stay focused on the systems included in the commercial classification.

The commercial air conditioning and refrigeration scope includes installation, alteration, and repair of refrigeration and evaporative cooling systems. It also includes heating systems of wet, dry, or radiant type. Wet systems include steam or hot water boilers and coils or baseboard convectors, with listed operating pressure limits for hot water and steam. Dry systems include gas-fired furnaces and space heaters.

The scope also includes ventilation systems, duct work, air filtering devices, water treatment devices, pneumatic or electrical controls, control piping, thermal and acoustical insulation of refrigerant pipes and ductwork, vibration isolation materials and devices, liquid fuel piping and tanks, and water and gas piping from the service connection to the equipment served. Testing and balancing of refrigerant, cooling, heating circuits, and air handling systems are also included in the scope.

For study purposes, candidates should connect the scope of work to the exam content outline. Refrigeration and air conditioning questions may involve equipment, components, system operation, installation requirements, troubleshooting concepts, or code compliance. Warm air heating and fuel gas questions may involve gas-fired equipment, combustion air, venting, fuel gas piping, and appliance connections. Ventilation and duct questions may involve airflow, duct sizing, system design, balancing, and inspection. Boiler and water piping questions may involve pressure, temperature, piping, hydronic principles, and safe operation.

Reference Books

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction safety reference supports preparation for OSHA-related exam content, including jobsite safety, hazard recognition, fall protection, ladders, scaffolds, personal protective equipment, material handling, tools, equipment, and safe work practices for construction environments.
• International Fuel Gas Code, 2018
  This code reference supports study for fuel gas systems, gas piping, combustion air, venting, appliance installation, pressure testing, gas-fired equipment, and safety requirements related to fuel gas work.
• International Mechanical Code, 2018
  This mechanical code reference supports preparation for heating, ventilation, air conditioning, duct systems, equipment installation, exhaust systems, combustion air, refrigeration-related requirements, and mechanical system compliance.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This trade reference supports study of refrigeration and air conditioning principles, system components, service concepts, controls, motors, heating, ventilation, and practical HVAC knowledge used by technicians and contractors.
• Low Pressure Boilers, 5th Edition
  This reference supports study of boiler fundamentals, low pressure steam and hot water systems, boiler operation, safety, controls, piping, fittings, maintenance, and related heating system concepts.
• Manual D, 2016, 3rd Edition
  This duct design reference from ACCA supports study of residential duct system design concepts, airflow, duct layout, friction rate, sizing methods, and distribution system performance. It is useful for strengthening duct design knowledge.
• Ductulator
  This duct sizing tool supports airflow and duct sizing practice. It helps candidates become more comfortable with duct dimensions, friction rate, air quantity, and practical HVAC sizing concepts.

Test Information and Study Materials

A strong study plan should begin with the exam content outline. Refrigeration, air conditioning, and warm air heating are major areas, so candidates should review system principles, components, equipment installation, basic troubleshooting, controls, and code compliance. Commercial HVAC and refrigeration work involves both technical understanding and safe installation practices.

When studying the International Mechanical Code, candidates should focus on how the code is organized. Important areas include general mechanical requirements, ventilation, exhaust systems, duct systems, combustion air, chimneys and vents, refrigeration, hydronic piping, and equipment installation. Candidates should practice finding definitions, tables, sizing information, equipment requirements, and installation provisions quickly.

When studying the International Fuel Gas Code, candidates should focus on fuel gas piping, pipe sizing, appliance connections, combustion air, venting, pressure testing, gas-fired equipment, installation clearances, and safety rules. Fuel gas questions often require careful reading because the correct answer may depend on system type, equipment type, location, or installation condition.

When studying OSHA, candidates should focus on construction safety topics that apply to HVAC and refrigeration work. This can include ladders, scaffolds, fall protection, personal protective equipment, material handling, tools, excavation awareness, hazard communication, electrical safety awareness, and general jobsite safety responsibilities. OSHA questions often test the ability to recognize unsafe conditions and apply the proper safety requirement.

Modern Refrigeration and Air Conditioning helps candidates strengthen trade knowledge. It supports study of refrigeration cycles, compressors, condensers, evaporators, metering devices, refrigerants, controls, motors, electrical components, heating systems, ventilation, and service principles. Low Pressure Boilers supports boiler-related content, including steam and hot water heating, boiler controls, safety devices, operation, and piping concepts.

Manual D and the Ductulator support duct design and sizing practice. Duct knowledge is useful for ventilation, airflow, sizing, estimating, and balancing questions. Candidates should understand the relationship between airflow, duct size, friction, velocity, fittings, and system performance. Testing and balancing questions may require the candidate to think through airflow measurement, system adjustment, and inspection procedures.

Study should include both reading and timed practice. Candidates should tab important code chapters, highlight key sections, review indexes, and practice looking up answers. A good routine is to read the question, identify the subject area, choose the best reference, and locate the answer efficiently. Repeating this process before exam day helps build confidence and improves exam readiness.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps contractor candidates prepare with organized study guidance, trade-focused review, and exam preparation resources designed around licensing exams. For the Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) exam, candidates need to understand HVAC and refrigeration systems while also learning how to navigate mechanical, fuel gas, and OSHA references under timed conditions.

This book package supports that preparation by giving candidates the references needed for structured study. The code books help candidates prepare for open book exam navigation. The trade references help reinforce the technical knowledge behind refrigeration, air conditioning, heating, boilers, duct design, ventilation, controls, motors, fuel piping, water piping, testing, balancing, inspection, sizing, and estimating.

1 Exam Prep focuses on realistic preparation. That means helping students organize their references, understand the major topic areas, practice reference navigation, and build a steady study routine. The goal is to help candidates walk into the exam with a stronger understanding of the books and the trade topics being tested.

For open book exams, confidence comes from practice. Candidates should know where to find code requirements, how to move through safety standards, and how to connect technical questions to the right reference. With the right materials and a consistent study plan, candidates can approach the exam with better structure and less uncertainty.

1 Exam Prep does not guarantee passing, licensing approval, or exam outcomes. The focus is preparation: organized study, trade knowledge, reference navigation, practice-oriented review, and a stronger foundation for the Arizona commercial air conditioning and refrigeration contractor exam.

FAQ Section

What books are included in this Arizona C-39 Exam Book Package?

This package includes Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, 2018, International Mechanical Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, Low Pressure Boilers, 5th Edition, Manual D, 2016, 3rd Edition, and a Ductulator.

Is the Arizona air conditioning and refrigeration contractor exam open book?

Yes. The Arizona air conditioning and refrigeration contractor trade exam is an open book test. Candidates are responsible for bringing their own approved references and following the exam center rules for tabs, highlighting, annotations, and permitted materials.

How many questions are on the exam?

The Arizona air conditioning and refrigeration trade exam includes 80 questions. The time allowed is 210 minutes, and the minimum passing score is 70%.

What topics are covered on the Arizona C-39 exam?

The exam content outline includes refrigeration, air conditioning, warm air heating, controls and motors, boilers, ventilation, evaporative coolers, fuel piping systems, water piping systems, steam, hot, chilled, and condensing water, testing, balancing, inspection, sizing, and estimating.

Can I mark my books before exam day?

Yes. References may be highlighted, underlined, annotated, and indexed before the exam session. Candidates may not write, highlight, underline, or index references during the exam.

Are temporary tabs allowed in the exam books?

No. Temporary tabs, removable notes, and Post-It style tabs are not allowed. Permanent tabs are allowed when they would tear the page if removed.

Are all books in this package allowed in the exam room?

No. OSHA, the International Fuel Gas Code, and the International Mechanical Code are exam-center references for this exam. Modern Refrigeration and Air Conditioning, Low Pressure Boilers, Manual D, and the Ductulator are study references used to strengthen trade knowledge and preparation.

Who should use this Arizona C-39 Exam Book Package?

This package is intended for candidates preparing for the Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) exam and for HVAC professionals who want focused references for commercial mechanical, refrigeration, fuel gas, boiler, duct, and OSHA safety preparation.