Arizona Air Conditioning and Refrigeration Residential / Commercial Contractor (CR-39) Exam Book Package

Arizona Air Conditioning and Refrigeration Residential / Commercial Contractor (CR-39) Exam Book Package

The Arizona Air Conditioning and Refrigeration Residential / Commercial Contractor (CR-39) Exam Book Package is designed for candidates preparing for the Arizona air conditioning and refrigeration contractor trade exam. This package brings together important HVAC, refrigeration, mechanical code, fuel gas code, OSHA safety, boiler, duct design, and duct sizing references used to support exam preparation for both residential and commercial air conditioning and refrigeration work.

The Arizona CR-39 classification is a dual residential and commercial contractor classification. That means the preparation should cover a broad range of HVAC and refrigeration knowledge, including comfort air conditioning systems, refrigeration, evaporative cooling, ventilation, heating, fuel gas systems, ductwork, controls, motors, boilers, water piping, steam, hot water, chilled water, testing, balancing, inspection, sizing, and estimating. This exam book package gives candidates a focused set of references to help organize study around those major trade areas.

For an open book contractor exam, the books are a major part of the preparation process. Candidates need to understand the material, but they also need to know how to use the references quickly. A timed exam does not leave much room for searching unfamiliar books. Strong preparation includes reading the books, learning the indexes and chapter layouts, adding approved permanent tabs, highlighting useful sections before exam day, and practicing question lookup under timed conditions.

This package is especially useful for HVAC professionals, refrigeration technicians, installers, service technicians, mechanical contractors, and qualifying parties preparing for the Arizona CR-39 air conditioning and refrigeration exam. The references support both technical trade knowledge and code-based preparation. The code books help with mechanical and fuel gas requirements. OSHA supports construction safety preparation. The trade references support refrigeration, air conditioning, boilers, airflow, duct design, controls, and related system knowledge.

Because CR-39 is a residential and commercial classification, candidates should study with a wider view than a single-scope license. Residential work may involve comfort cooling, heating, ventilation, duct systems, equipment replacement, and related controls. Commercial work may involve larger equipment, refrigeration systems, evaporative cooling, ventilation systems, fuel piping, hydronic systems, testing and balancing, and mechanical code compliance. This book package helps candidates prepare for the range of topics that can appear on the exam.

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 examination covers trade knowledge and reference-based information used in residential and commercial air conditioning and refrigeration work.

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. Candidates should use these categories as a study roadmap when organizing their preparation.

Refrigeration and air conditioning are central areas of the exam. Candidates should understand system components, refrigerant cycle principles, equipment installation, common operating conditions, controls, motors, service concepts, and safety concerns. Warm air heating and fuel piping questions may involve gas-fired equipment, combustion air, venting, appliance connections, pipe sizing, and safe installation practices.

Ventilation and duct-related subjects are also important. Candidates may need to understand airflow, duct sizing, duct layout, fittings, friction, velocity, balancing, exhaust, and mechanical system performance. Boiler and water piping topics may include low pressure boiler operation, steam and hot water systems, chilled water, condensing water, piping, fittings, controls, and safe operating principles.

The exam may include both direct reference lookup questions and practical trade knowledge questions. Some questions may point clearly to a code book or safety reference. Others may require candidates to understand the system before deciding which reference to use. This is why preparation should include both content review and book navigation practice.

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 reference materials 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 highlighting, notes, or indexing should be completed before test day.

References may be tabbed with permanent tabs only. Permanent tabs are tabs that would tear the page if removed. Temporary tabs, removable notes, sticky notes, and tabs that can be removed without tearing the page are not allowed. Candidates should prepare their books carefully and make sure all tabs and markings follow exam center rules.

A silent, nonprinting, non-programmable calculator may be used in the examination center. Candidates should also follow all testing center rules for identification, check-in, personal items, permitted materials, and exam conduct.

Several books in this package are valuable study references even when they are not exam-room-approved references. Modern Refrigeration and Air Conditioning, Low Pressure Boilers, Manual D, and the Ductulator support technical preparation and trade understanding. They are useful for building knowledge in refrigeration, HVAC equipment, boiler systems, airflow, duct sizing, and system design concepts. Candidates should treat the officially allowed exam-center references separately from supplemental study references.

Licensing Steps

Arizona contractor licensing is handled through the Arizona Registrar of Contractors. A candidate pursuing the Arizona Air Conditioning and Refrigeration Residential / Commercial Contractor (CR-39) license should begin by confirming that the CR-39 dual classification matches the work the business intends to perform.

After identifying the correct classification, the candidate should review the required exam path. Arizona contractor licensing may include a trade examination, statutes and rules requirements, qualifying party requirements, experience requirements, bonding, business entity information, and application documentation. The trade exam book package supports the technical study portion of the licensing process.

The qualifying party is responsible for demonstrating the knowledge and experience required for the license classification. Candidates should prepare for the trade exam using the approved references and the supporting study materials included in this package. After preparing, the candidate can schedule the examination through the proper testing process and complete the exam according to current testing procedures.

Once examination requirements are satisfied, the applicant continues through the Arizona contractor license application process. This may include submitting the correct application, naming the qualifying party, meeting experience requirements, obtaining the required bond, and satisfying any other state licensing requirements that apply to the classification and business structure.

This book package does not replace the state licensing application. It supports preparation for the trade exam by giving candidates the reference books and study materials needed to review the major HVAC and refrigeration topics connected to the Arizona CR-39 classification.

State Requirements

The Arizona Registrar of Contractors issues separate commercial, residential, and dual license classifications. The CR-39 classification is a dual residential and commercial air conditioning and refrigeration classification. Candidates preparing for this license should understand that the classification connects to both residential and commercial HVAC and refrigeration work.

The residential side of the classification includes installation and repair of comfort air conditioning systems, including refrigeration, evaporative cooling, ventilating, and heating equipment. It also includes installation and repair of machinery, units, accessories, refrigerator rooms, insulated refrigerated spaces, and controls in refrigerators. When necessary, a new circuit may be added to an existing service panel or sub-panel, but installation of a new service panel or sub-panel is excluded.

The commercial side of the classification includes installation, alteration, and repair of refrigeration and evaporative cooling systems. It also includes heating systems of wet, dry, or radiant type; 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; 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 study purposes, candidates should connect the scope of work to the exam outline. Refrigeration and air conditioning questions may involve equipment, components, system operation, refrigerant cycle knowledge, installation requirements, or service principles. Fuel gas questions may involve gas piping, appliance connections, venting, combustion air, pressure testing, and code requirements. Mechanical code questions may involve ventilation, exhaust, ducts, equipment installation, hydronic piping, and refrigeration-related provisions. OSHA questions may involve jobsite safety, hazard recognition, ladders, scaffolds, personal protective equipment, and safe construction practices.

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, tools, material handling, and safe work practices for construction environments.
• International Fuel Gas Code, 2018
  This fuel gas code reference supports preparation for gas piping, pipe sizing, combustion air, venting, appliance installation, pressure testing, gas-fired equipment, clearances, and safety requirements related to fuel gas systems.
• International Mechanical Code, 2018
  This mechanical code reference supports preparation for heating, ventilation, air conditioning, duct systems, exhaust systems, combustion air, refrigeration-related requirements, hydronic piping, equipment installation, and mechanical system compliance.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This HVAC trade reference supports study of refrigeration and air conditioning principles, system components, compressors, condensers, evaporators, metering devices, controls, motors, heating, ventilation, electrical concepts, and practical service knowledge.
• Low Pressure Boilers, 5th Edition
  This boiler reference supports study of low pressure steam and hot water systems, boiler operation, safety devices, controls, piping, fittings, maintenance, combustion, and related heating system concepts.
• Manual D, 2016, 3rd Edition
  This duct design reference from ACCA supports study of airflow, duct layout, friction rate, duct sizing, distribution system performance, fittings, and design concepts used in HVAC preparation.
• Ductulator
  This duct sizing tool supports practice with duct dimensions, airflow, friction rate, velocity, and practical HVAC sizing concepts. It is useful for candidates reviewing duct design, sizing, estimating, and balancing topics.

Exam Room Approved Books

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This reference may be used in the exam room for OSHA construction safety questions when prepared according to testing center rules.
• International Fuel Gas Code, 2018
  This reference may be used in the exam room for fuel gas code questions, including piping, venting, combustion air, appliance installation, and related fuel gas requirements.
• International Mechanical Code, 2018
  This reference may be used in the exam room for mechanical code questions, including HVAC equipment, ventilation, ducts, refrigeration, hydronic piping, combustion air, and mechanical system installation requirements.

Test Information and Study Materials

A strong study plan should begin with the exam content outline. Candidates should divide their preparation across refrigeration, air conditioning, warm air heating, controls and motors, boilers, ventilation, evaporative cooling, fuel piping, water piping, steam and hot water systems, chilled water, condensing water, testing and balancing, inspection, sizing, and estimating. Each topic should be reviewed with the appropriate reference.

When studying the International Mechanical Code, candidates should focus on the organization of the code. 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 using the index, definitions, tables, and chapter headings to locate information quickly.

When studying the International Fuel Gas Code, candidates should focus on gas piping systems, pipe sizing, gas appliance installation, venting, combustion air, pressure testing, shutoff valves, connectors, clearances, and safety rules. Many fuel gas questions require careful reading because the answer can depend on equipment type, installation location, venting method, or system condition.

When studying OSHA, candidates should focus on safety requirements that affect HVAC and refrigeration work on construction jobsites. This may include ladders, scaffolds, fall protection, personal protective equipment, hazard communication, hand and power tools, material handling, electrical safety awareness, and general safe work practices. Safety questions often test the ability to recognize hazards and apply the proper rule.

Modern Refrigeration and Air Conditioning helps candidates strengthen the technical side of exam preparation. Candidates should review the refrigeration cycle, compressors, condensers, evaporators, metering devices, refrigerants, heat transfer, controls, motors, electrical components, heating systems, ventilation, and system troubleshooting concepts. This trade knowledge can help candidates better understand questions that are not simple code lookup questions.

Low Pressure Boilers supports preparation for boiler-related topics. Candidates should review steam and hot water boiler operation, safety controls, pressure and temperature concepts, fittings, valves, piping, maintenance, and boiler safety. Boiler questions may connect technical knowledge with practical field conditions.

Manual D and the Ductulator support preparation for duct design, sizing, estimating, and airflow topics. Candidates should understand the relationship between airflow, duct size, friction rate, velocity, fittings, static pressure, and system performance. Duct knowledge is especially useful for ventilation, balancing, inspection, and sizing questions.

Preparation should include repeated timed lookup practice. Candidates should read a question, identify the topic, select the correct reference, and locate the answer efficiently. This routine helps build confidence and improves performance in an open book testing environment.

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 built around licensing exams. For the Arizona Air Conditioning and Refrigeration Residential / Commercial Contractor (CR-39) exam, candidates need both technical HVAC knowledge and the ability to navigate approved references under timed conditions.

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

1 Exam Prep focuses on practical preparation. That includes helping students understand major topic areas, organize references, review trade concepts, and build a consistent study routine. Candidates who know where information is located, how the books are organized, and which reference applies to each topic are better prepared for the open book exam format.

The goal is not to promise an outcome. The goal is to help candidates prepare in a structured way. With consistent study, properly organized references, and practice-oriented review, candidates can approach the Arizona CR-39 exam with stronger confidence and a clearer exam-day strategy.

FAQ Section

What books are included in this Arizona CR-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 CR-39 air conditioning and refrigeration 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 exam center rules for tabs, highlighting, annotations, and permitted materials.

How many questions are on the Arizona CR-39 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 CR-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.

Which references are approved for the exam room?

The exam-room-approved references for this exam include Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, 2018, and International Mechanical Code, 2018. Other books in this package are study references used to build trade knowledge.

Can I mark my books before exam day?

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

Are removable tabs allowed in the exam books?

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

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

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