Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Books Allowed into Exam Package

The Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Books Allowed into Exam Package is designed for contractors preparing for the Arizona Air Conditioning and Refrigeration trade exam who want the approved exam-room references organized before test day. This package focuses on the books permitted in the testing center for the C-39 air conditioning and refrigeration exam, giving you the core code and safety references used for open-book navigation during the exam.

Arizona’s C-39 classification is a commercial specialty contractor license classification for air conditioning and refrigeration work. The trade exam covers technical knowledge related to refrigeration, air conditioning, warm air heating, controls, boilers, ventilation, evaporative cooling, fuel piping, water piping, hydronic systems, testing, balancing, inspections, sizing, and estimating. Because the exam is open book, preparation is not only about understanding HVAC and refrigeration concepts. It is also about knowing where to find information quickly inside the approved references.

This books-allowed package is built for students who want the correct exam-room references for the Arizona C-39 contractor exam. The included references support efficient study, code lookup, safety review, and exam-day navigation. For many contractors, the biggest challenge is not simply owning the books; it is learning how to move through the books with purpose. The right preparation helps you connect trade knowledge with the sections, tables, definitions, and code requirements that may appear in exam questions.

The Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Books Allowed into Exam Package is a strong choice for applicants who prefer to study from the actual references allowed into the exam room. These books help you become familiar with mechanical code requirements, fuel gas code requirements, OSHA construction safety standards, terminology, tables, and system requirements that are important for HVAC and refrigeration contractors working in commercial settings.

What You Get

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA) for construction safety standards, workplace protection, and OSHA requirements relevant to contractor exam preparation.
• International Fuel Gas Code, 2018 for fuel gas system requirements, combustion air, venting, piping, appliances, sizing, and safety-related code provisions.
• International Mechanical Code, 2018 for mechanical systems, ventilation, duct systems, refrigeration, hydronic piping, equipment, and mechanical code compliance.

This package is focused on the references allowed into the Arizona C-39 exam room. These books are valuable for open-book exam preparation because they give you the source material needed to practice locating answers under time pressure. When used with a structured study plan, they help develop the book-navigation skills required for a professional licensing exam environment.

Exam Details

The Arizona Air Conditioning and Refrigeration trade exam content outline used for the R-39R/C-39 (CR-39) Air Conditioning and Refrigeration examination lists 80 questions, a minimum passing score of 70%, and 210 minutes of testing time. The exam includes multiple trade subject areas connected to HVAC, refrigeration, fuel gas, water piping, hydronic systems, ventilation, and system balancing.

Subject areas listed for the exam include 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, inspections, sizing, and estimating. These topics reflect the broad technical range expected of an Arizona air conditioning and refrigeration contractor.

The examination may include questions based on reference material as well as trade knowledge and general industry practices. Code questions are based on the specific code editions listed for the exam, making the correct editions especially important. For this package, the listed code references include the 2018 International Fuel Gas Code and the 2018 International Mechanical Code, along with OSHA 29 CFR Part 1926.

On exam day, candidates are responsible for bringing their own approved references to the examination center. A silent, nonprinting, non-programmable calculator may be used in the examination center. References may be highlighted, underlined, annotated, and indexed before the exam session, but candidates may not write, highlight, underline, or index in the references during the exam session. Additional loose or attached papers are not permitted with approved references. Permanent tabs are allowed, while temporary removable tabs are not allowed.

Open Book Test

The Arizona C-39 Air Conditioning and Refrigeration trade exam is an open-book exam for approved references. Open book does not mean easy. It means the exam is designed to test both trade understanding and the ability to find accurate information in the approved references within the time allowed.

Strong open-book preparation requires familiarity with the layout of each book. Candidates should understand how each reference is organized, where major chapters are located, how tables are used, and how definitions connect to code requirements. The International Mechanical Code and International Fuel Gas Code require careful reading because many exam questions may involve applying a code rule, table, exception, or definition. OSHA 29 CFR Part 1926 requires a different type of navigation, with safety standards organized by regulatory sections.

Because the exam includes 80 questions and 210 minutes, time management matters. Successful preparation should include practice locating answers quickly, recognizing keywords in exam questions, and choosing the most relevant reference before searching. Highlighting and permanent tabs can support that process when done before the exam session and when organized around frequently tested subjects.

Licensing Steps

Arizona contractor licensing is handled through the Arizona Registrar of Contractors. Applicants pursuing the Arizona C-39 Air Conditioning and Refrigeration Commercial Contractor classification should use the Arizona ROC license classification requirements to determine the required examinations and licensing requirements for their application.

A typical licensing path includes identifying the proper license classification, meeting applicable qualifying party requirements, completing required examinations, and submitting the completed license application to the Arizona Registrar of Contractors. The person acting as the qualifying party is responsible for completing the required examination requirements for the license classification.

New license applicants may also be required to complete the Arizona Statutes and Rules Exam process. In addition to the statutes and rules requirement, applicants may be required to pass the trade-specific examination administered through PSI. Once examination requirements are completed, the applicant submits the completed license application and required documentation to the Arizona Registrar of Contractors for processing.

Exam score reports must be handled according to Arizona ROC requirements. The candidate information bulletin states that completed license applications and original score reports must be submitted to the Arizona ROC for processing within two years from the date of passing the examination. Applications are not accepted until all required examination requirements have been completed.

State Requirements

The Arizona C-39 Air Conditioning and Refrigeration classification is listed as a specialty commercial contracting classification. The C-39 scope allows the licensee to install, alter, and repair refrigeration and evaporative cooling systems. It also includes installation, alteration, and repair of certain heating systems, including wet, dry, or radiant systems, within the limits stated in the Arizona classification scope.

The C-39 classification 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 part of the stated scope.

Arizona’s C-39 scope also notes that, if necessary, a new circuit may be added to the existing service panel or sub-panel. Installation of a new service panel or sub-panel is excluded from the classification scope. This distinction matters for contractors who need to understand the boundaries of the license classification and coordinate work with properly licensed contractors when work falls outside the C-39 scope.

Reference Books

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This OSHA construction safety reference covers federal construction standards used to support jobsite safety knowledge, hazard recognition, and compliance-related exam preparation.
• International Fuel Gas Code, 2018
  This fuel gas code reference covers requirements for fuel gas systems, appliances, combustion air, vents, chimneys, piping, sizing, installation, and safety provisions relevant to HVAC and mechanical work.
• International Mechanical Code, 2018
  This mechanical code reference covers mechanical systems, ventilation, duct systems, refrigeration, boilers, hydronic piping, equipment installation, controls, and mechanical code requirements.

Exam Room Approved Books

The following books are approved to be brought into the Arizona Air Conditioning and Refrigeration Commercial Contractor C-39 exam room:

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
• International Fuel Gas Code, 2018
• International Mechanical Code, 2018

These references should be prepared before exam day. References may be highlighted, underlined, annotated, and indexed before the examination session. Permanent tabs may be used. Temporary tabs, removable notes, loose papers, and added attachments are not permitted. Candidates should make sure their books are clean, organized, and ready for inspection before entering the testing room.

Test Information and Study Materials

The Arizona C-39 exam requires both technical knowledge and reference navigation. A strong study plan should begin by reviewing the exam content areas, then matching each content area to the books where related information is located. For example, fuel piping questions may point toward the International Fuel Gas Code, while ventilation, refrigeration, duct, and mechanical system questions may point toward the International Mechanical Code. Safety questions may require OSHA 29 CFR Part 1926.

Students should spend time learning the table of contents, indexes, definitions, chapter organization, and recurring terminology in each reference. Many exam questions can be answered faster when the candidate recognizes the code book and chapter that matches the question. Definitions are especially important because code language often uses precise terms. Tables are also important because many sizing, clearance, installation, and system questions require reading the correct table and applying it correctly.

Practice should include timed lookup drills. Choose a topic, locate the correct chapter, find the relevant section or table, and confirm the answer without over-reading unrelated material. This builds the habit of moving through the books efficiently. Study sessions should also include review of HVAC fundamentals, refrigeration principles, controls, motors, boilers, ventilation, evaporative cooling, fuel piping, water piping, hydronic piping, testing, balancing, inspections, sizing, and estimating.

For the best results, use the approved references throughout your preparation rather than saving them for the end. The more familiar the books feel before exam day, the easier it becomes to use them under pressure. Good book preparation supports confidence, but the goal is always practical readiness: knowing the trade, understanding the exam topics, and navigating the allowed books with accuracy.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Arizona C-39 candidates prepare with a practical, trade-focused approach. The goal is to make study time more organized and more productive by helping students understand what to study, how to use their references, and how to build confidence before exam day.

For an open-book contractor exam, reference navigation is a major part of preparation. 1 Exam Prep supports students by focusing on how to work with the approved books, how to connect exam topics to the correct reference, and how to approach questions with a clear strategy. Instead of trying to memorize every page, students learn how to recognize key terms, locate code sections, and use the books as tools.

This package supports candidates who want the core exam-room references for the Arizona Air Conditioning and Refrigeration Commercial Contractor exam. With the right books in hand, students can begin building a study routine around real exam topics, trade knowledge, and open-book search skills. That structure can reduce confusion and help candidates study with more direction.

1 Exam Prep’s approach is promotional, practical, and realistic. The preparation process is designed to strengthen understanding, improve reference familiarity, and help students enter the exam with a more organized plan. Passing the exam depends on the candidate’s preparation, trade knowledge, test-day performance, and compliance with Arizona ROC and PSI requirements.

FAQ Section

Is the Arizona C-39 Air Conditioning and Refrigeration exam open book?

Yes. The Arizona C-39 Air Conditioning and Refrigeration trade exam allows approved reference materials in the examination center. Candidates must bring their own approved references and follow all PSI rules for book preparation and exam-room use.

Which books are allowed into the Arizona C-39 exam room?

The approved exam-room references for this package are Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, 2018, and International Mechanical Code, 2018.

Can I highlight and tab my books before the exam?

References may be highlighted, underlined, annotated, and indexed before the examination session. Permanent tabs are allowed. Temporary removable tabs, loose papers, and added attachments are not allowed.

Can I write in my books during the exam?

No. Candidates may not write, highlight, underline, or index in their references during the exam session. All book preparation must be completed before the exam begins.

How many questions are on the Arizona Air Conditioning and Refrigeration exam?

The R-39R/C-39 (CR-39) Air Conditioning and Refrigeration trade exam content outline lists 80 questions, a 70% minimum passing score, and 210 minutes of testing time.

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

The exam content 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, inspections, sizing, and estimating.

Does this package include the books allowed into the testing center?

Yes. This package is focused on the approved exam-room books for the Arizona Air Conditioning and Refrigeration Commercial Contractor C-39 exam.

Do I still need to study if the test is open book?

Yes. Open-book exams require strong preparation. Candidates need to understand the trade topics, know how the references are organized, and practice locating information quickly within the time allowed.

Who administers the Arizona trade examination?

The Arizona Registrar of Contractors uses PSI for its trade examination program. Candidates schedule and take the required trade examination through the testing process established for Arizona contractor licensing.

Is this package for commercial air conditioning and refrigeration contractors?

Yes. This product is built for candidates preparing for the Arizona Air Conditioning and Refrigeration Commercial Contractor C-39 exam and needing the approved books allowed into the exam room.