Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) Exam - Online Exam Prep

Prepare for the Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) exam with online exam prep designed for candidates pursuing a residential HVAC, refrigeration, and solar-related contractor license in Arizona. This preparation product helps students review trade knowledge, construction safety, fuel gas requirements, mechanical code provisions, plumbing code topics, refrigeration principles, air conditioning systems, heating equipment, boilers, duct sizing, solar water heating, solar pool heating, and field practices connected to the R-39 contractor classification.

The Arizona R-39 classification is a residential contractor classification for air conditioning and refrigeration work that includes solar-related scope. Candidates preparing for this exam should be ready to study residential HVAC systems, refrigeration concepts, evaporative cooling, warm air heating, mechanical ventilation, fuel gas piping, plumbing-related connections, low-pressure boiler concepts, duct sizing, and solar heating system design and installation. Because this license is residential, preparation should focus on the trade knowledge and code application used in residential settings while still respecting the technical depth of HVAC and refrigeration work.

This Arizona R-39 online exam prep product is built for students who want a structured way to prepare before test day. HVAC, refrigeration, and solar-related exams can feel broad because the trade includes several connected systems. A candidate may need to understand compressors, condensers, evaporators, metering devices, heating equipment, duct systems, fuel gas appliances, piping, controls, air movement, equipment clearances, safety hazards, boiler components, and solar heating system layout. Online exam prep helps organize these subjects into a more focused study routine.

Because the Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) exam is an open book test, preparation should include both technical review and reference-book navigation. Open book testing allows approved references in the exam room, but it does not replace studying. Candidates should know how the books are arranged, where key information is located, and how to move efficiently from a question to the correct section.

Students preparing for the Arizona R-39 exam should use this online exam prep with the supplied references. The books support OSHA construction safety, fuel gas code requirements, mechanical code provisions, plumbing code requirements, refrigeration and air conditioning theory, boiler knowledge, duct sizing, and solar water or pool heating design and installation. Together, these materials support a strong foundation for residential HVAC, refrigeration, and solar contractor exam preparation.

Exam Details

The Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) exam is associated with Arizona’s contractor licensing process for residential air conditioning, refrigeration, and solar-related work. Arizona contractor licensing is administered by the Arizona Registrar of Contractors, and trade examinations are administered through PSI as part of the state contractor licensing process.

The R-39 classification is a residential classification. Candidates should prepare for exam content that reflects residential air conditioning and refrigeration work, along with solar heating topics included in the classification. The exam may include questions based on the listed reference materials, trade knowledge, and general industry practices. A strong study plan should include code review, safety review, trade manual study, solar heating review, and practice using the references under test-like conditions.

Important subject areas for the Arizona R-39 exam include refrigeration, air conditioning, warm air heating, controls, motors, boilers, ventilation, evaporative cooling, fuel piping systems, water piping systems, plumbing-related code provisions, mechanical code topics, OSHA safety, duct sizing, solar water heating, solar pool heating, system components, equipment installation, inspection concepts, and field practices.

For code-based study, candidates should use the listed code editions. The supplied code references include the 2018 International Fuel Gas Code, 2018 International Mechanical Code, and 2018 International Plumbing Code. These books support questions involving gas piping, appliances, mechanical equipment, refrigeration systems, ventilation, piping, plumbing provisions, definitions, installation rules, and system safety. OSHA 29 CFR Part 1926 supports construction safety questions involving hazards, protective measures, ladders, scaffolds, tools, equipment, excavation, and jobsite safety practices.

For trade-knowledge study, candidates should review Modern Refrigeration and Air Conditioning, Low Pressure Boilers, Ductulator, and Solar Water and Pool Heating Design and Installation Manual. These references support practical understanding of refrigeration cycles, air conditioning systems, service principles, boiler systems, airflow, duct sizing, and solar heating system components used in residential applications.

Online exam prep helps candidates connect these references to exam-style topics. Instead of reading the books without direction, students can review one subject area, practice applying that topic, and then return to the books to strengthen areas that need more work. This study cycle helps build both technical knowledge and reference-navigation skill.

Open Book Test

The Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) trade exam is an open book test. Candidates may use approved reference materials during the exam according to the testing rules that apply at the examination center. Since this is an open book exam, preparation should include learning how to use the books quickly and accurately.

Open book testing rewards organization. Candidates should know each reference book’s table of contents, index, chapter layout, definitions, tables, charts, installation sections, safety rules, and common trade terms. A fuel gas question may lead to the International Fuel Gas Code. A mechanical equipment, ventilation, ductwork, refrigeration, or installation question may lead to the International Mechanical Code. A plumbing-related question may require the International Plumbing Code. A safety question may require OSHA 29 CFR Part 1926. A solar heating question may require the Solar Water and Pool Heating Design and Installation Manual.

Students should prepare the references before exam day according to the testing rules. Highlighting, underlining, annotations, and permanent tabs can help when used carefully. Mark the sections that are most useful for quick lookup, but avoid over-marking the books so heavily that important information becomes difficult to find.

Open book does not mean every answer will be easy to locate word for word. Some questions may require candidates to understand the concept first, identify the correct reference, and then apply the information to the situation described in the question. Online exam prep helps students practice that process by connecting trade topics, code references, and exam-style thinking.

Licensing Steps

Arizona contractor applicants should begin by identifying the correct license classification for the work they plan to perform. The Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) classification is connected to residential air conditioning, refrigeration, and solar-related work within the authorized scope of the license.

After selecting the license classification, the applicant should review the Arizona Registrar of Contractors licensing requirements. The qualifying party for the license is generally responsible for satisfying the required examination obligations unless the state grants an applicable waiver. Candidates pursuing the R-39 classification should prepare for the trade exam and complete any other licensing steps required for the application.

Arizona contractor applicants may also be required to complete the Arizona Statutes and Rules Exam training course, commonly known as the SRE. This requirement is separate from the trade exam. The SRE focuses on Arizona contractor statutes and rules, while the R-39 trade exam focuses on residential air conditioning, refrigeration, solar-related work, mechanical systems, fuel gas, plumbing, OSHA safety, boilers, duct sizing, and related trade knowledge.

Once the required exam obligations are completed, the applicant submits the contractor license application and supporting materials to the Arizona Registrar of Contractors. The state reviews the application according to its licensing rules. Application requirements may include business information, qualifying party information, bonding, background requirements, financial responsibility, and other required state application items.

Passing the trade exam is an important step, but it does not automatically issue the contractor license. The applicant must also satisfy the full state licensing process. Exam preparation should be treated as one major part of a larger licensing plan that includes application readiness and compliance with Arizona contractor requirements.

State Requirements

The Arizona Registrar of Contractors issues contractor licenses for residential, commercial, and dual residential/commercial classifications. The R designation identifies a residential contractor classification. The R-39 classification is tied to air conditioning and refrigeration work that includes solar-related scope within residential settings.

Residential air conditioning and refrigeration work can involve several types of equipment and jobsite responsibilities. Contractors may work with comfort air conditioning systems, refrigeration equipment, evaporative cooling systems, ventilation systems, heating equipment, fuel gas equipment, plumbing-related piping, boiler systems, duct systems, controls, safety requirements, solar heating components, and system layout. The exam preparation process should reflect that broad technical scope.

Candidates preparing for the R-39 exam should understand that the license classification controls the type of work a contractor is authorized to perform. Residential classifications are distinct from commercial classifications. A candidate seeking to perform both residential and commercial work should review the proper classification before applying.

Arizona contractor licensing also requires applicants to complete the state application process. The trade exam is one part of licensing, but it is not the only requirement. Applicants should make sure the qualifying party, business entity, bonding, financial responsibility, and application materials are handled according to Arizona Registrar of Contractors requirements.

Reference Books

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction safety reference covers federal OSHA standards for construction work. It supports preparation for safety-related questions involving jobsite hazards, personal protective equipment, fall protection, ladders, scaffolds, excavation, tools, equipment, and general construction safety practices.
• International Fuel Gas Code, 2018
  The 2018 International Fuel Gas Code covers fuel gas system requirements, including gas piping, appliance connections, combustion air, venting, materials, sizing, shutoff valves, installation rules, testing, and safety provisions.
• International Mechanical Code, 2018
  The 2018 International Mechanical Code covers mechanical systems, refrigeration, ventilation, duct systems, equipment installation, combustion air, exhaust, piping, and related mechanical requirements used in HVAC and refrigeration work.
• International Plumbing Code, 2018
  The 2018 International Plumbing Code covers plumbing system requirements, piping, materials, fixtures, drainage, water supply, and related provisions that may support questions involving plumbing connections, piping systems, and code coordination.
• Modern Refrigeration and Air Conditioning, 22nd edition
  This trade reference supports study of refrigeration principles, air conditioning systems, service practices, system components, controls, motors, troubleshooting, installation concepts, and HVAC terminology used in the field.
• Low Pressure Boilers 5th Edition
  This reference supports review of low-pressure boiler systems, boiler components, safety devices, operation, controls, steam and hot water systems, maintenance concepts, and boiler-related terminology.
• Ductulator
  The duct calculator supports review of duct sizing, airflow, velocity, friction loss, and air distribution relationships. It is useful for understanding sizing concepts connected to duct systems and HVAC estimating.
• Solar Water and Pool Heating Design and Installation Manual
  This solar heating reference supports study of solar water and pool heating systems, system components, collectors, circulation, layout, design principles, installation practices, controls, and solar heating terminology.

Test Information and Study Materials

The Arizona R-39 exam preparation process should cover air conditioning, refrigeration, solar heating, mechanical code, fuel gas code, plumbing code, OSHA safety, boilers, duct sizing, and residential field practices. Candidates should create a study plan that gives each major subject area attention instead of focusing on only one book.

Refrigeration and air conditioning study should include system components, refrigeration cycles, heat transfer, compressors, condensers, evaporators, metering devices, refrigerants, temperature control, system operation, troubleshooting, and service practices. Modern Refrigeration and Air Conditioning is an important reference for these trade concepts.

Mechanical code preparation should include equipment installation, ventilation, duct systems, refrigeration provisions, exhaust requirements, combustion air, mechanical clearances, piping, and definitions. The International Mechanical Code is a key reference for mechanical system requirements and should be used regularly during study.

Fuel gas preparation should include gas piping materials, pipe sizing concepts, appliance connections, shutoff valves, combustion air, venting, testing, pressure, and safety provisions. Candidates should become familiar with the structure of the International Fuel Gas Code so they can locate information quickly during the open book exam.

Plumbing code preparation should include plumbing system organization, piping, materials, water supply, drainage, and provisions that may relate to HVAC, refrigeration, or solar heating systems. The International Plumbing Code adds another layer of code knowledge for candidates preparing for the R-39 exam.

Boiler study should include low-pressure boiler components, operation, safety devices, controls, steam and hot water system concepts, maintenance, and boiler-related terminology. Low Pressure Boilers helps support review of these topics and should be used alongside the other mechanical references.

Duct sizing preparation should include airflow, velocity, friction loss, duct sizing relationships, system layout, and estimating concepts. The Ductulator is a practical tool for understanding how duct size, airflow, and friction relate to one another. Candidates should practice using it before test day so it feels familiar during the exam.

Solar heating preparation should include collectors, circulation, system layout, valves, controls, design principles, installation practices, and solar heating terminology. Since the classification includes solar, the Solar Water and Pool Heating Design and Installation Manual should be reviewed carefully as part of the study process.

OSHA safety preparation should include hazard recognition, personal protective equipment, fall protection, ladders, scaffolds, excavation, tools, equipment, and construction site safety practices. Safety questions often require candidates to identify the hazard and apply the correct rule or safety principle.

Online exam prep helps turn this wide range of material into a practical study routine. Review one topic at a time, locate the related section in the reference, answer exam-style questions, and then return to missed topics for additional review. This process helps build both trade knowledge and reference-navigation skill.

Since the R-39 exam is open book, candidates should also prepare their references carefully before test day. Highlighting, underlining, annotations, and permanent tabs may help, but organization matters. Mark the sections that are most useful for quick lookup. Learn how each book is arranged. Practice using the index and table of contents so that the books become working tools rather than unfamiliar materials.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Arizona contractor candidates prepare with organized study support, trade-focused review, reference navigation, and practical exam preparation. For the Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) exam, that means helping students focus on HVAC, refrigeration, solar heating, mechanical code, fuel gas, plumbing code, OSHA safety, boilers, duct sizing, and related residential trade topics.

This online exam prep product helps students study with more structure. Instead of working through several references without a plan, candidates can focus on major subject areas and connect each topic back to the books. That structure helps make the study process more manageable and keeps attention on the material most relevant to the R-39 trade exam.

1 Exam Prep also supports reference navigation. Since the R-39 exam is open book, candidates should know how to use the allowed references before test day. The goal is to help students become comfortable identifying which book applies, locating the right section, and applying the information to exam-style questions.

Practice-oriented preparation helps build confidence. Students can use online exam prep to identify weaker areas, review missed topics, and return to the books for additional study. This process strengthens both trade understanding and exam readiness.

Contractor exams reward preparation, consistency, and familiarity with the source material. 1 Exam Prep helps students approach the Arizona R-39 exam with a focused study plan, stronger trade review, and better confidence using the references that support the test.

FAQ Section

What is the Arizona Air Conditioning and Refrigeration, Including Solar Residential Contractor (R-39) Exam - Online Exam Prep?

It is an online exam prep product designed to help candidates study for the Arizona R-39 residential contractor trade exam. It supports review of air conditioning, refrigeration, solar heating, mechanical code, fuel gas, plumbing code, OSHA safety, boilers, duct sizing, and field practice topics.

Is the Arizona R-39 contractor exam open book?

Yes. The Arizona R-39 trade exam is an open book test. Candidates should study the approved references and become familiar with each book before exam day.

What does the Arizona R-39 classification include?

The R-39 classification is connected to residential air conditioning and refrigeration work that includes solar-related scope. Candidates should prepare for HVAC, refrigeration, solar heating, mechanical systems, fuel gas, plumbing, safety, boilers, and duct-sizing topics.

Which books are included in this study list?

The supplied study list includes Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code 2018, International Mechanical Code 2018, International Plumbing Code 2018, Modern Refrigeration and Air Conditioning 22nd edition, Low Pressure Boilers 5th Edition, Ductulator, and Solar Water and Pool Heating Design and Installation Manual.

Does online exam prep replace the reference books?

No. Online exam prep should be used with the reference books. The books contain the source material, while exam prep helps organize review, reinforce key topics, and improve your ability to apply what you study.

Why is the Solar Water and Pool Heating Design and Installation Manual included?

The R-39 classification includes solar-related scope, so candidates should review solar water and pool heating system design, components, circulation, layout, installation practices, controls, and related terminology.

What should I focus on while studying for the Arizona R-39 exam?

Focus on air conditioning, refrigeration, solar heating, fuel gas code, mechanical code, plumbing code, OSHA safety, low-pressure boilers, duct sizing, airflow, equipment installation, piping, controls, and residential field practices.

Why is reference navigation important for the R-39 exam?

Because the exam is open book, candidates need to know how to find information quickly. Strong reference navigation helps you identify the correct book, locate the right section, and apply the information to the question.

Who issues Arizona contractor licenses?

Arizona contractor licenses are issued by the Arizona Registrar of Contractors. The trade exam is one part of the licensing process, and applicants must also complete the required state application steps.

Who administers Arizona contractor trade exams?

Arizona contractor trade examinations are administered through PSI as part of the Arizona contractor licensing process.

Does this online exam prep guarantee a passing score?

No. This product is designed to support preparation with structured study guidance, trade-focused review, practice-oriented learning, and reference navigation. Exam results depend on the candidate’s preparation and performance on test day.