{"product_id":"arizona-air-conditioning-and-refrigeration-residential-commercial-contractor-cr-39-exam-online-practice-questions","title":"Arizona Air Conditioning and Refrigeration Residential\/Commercial Contractor (CR-39) Exam - Online Practice Questions","description":"\u003ch1 style=\"color: #d32f2f;\"\u003eArizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39)\u003c\/h1\u003e\n\n\u003cp\u003ePrepare for the Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) exam with online exam prep designed for candidates pursuing a dual residential and commercial HVAC and refrigeration contractor license in Arizona. This preparation product helps students review the trade knowledge, code requirements, safety standards, equipment principles, piping systems, duct design concepts, controls, motors, boilers, ventilation, refrigeration, air conditioning, heating, testing, balancing, sizing, and estimating topics connected to the CR-39 contractor classification.\u003c\/p\u003e\n\n\u003cp\u003eThe Arizona CR-39 Air Conditioning and Refrigeration classification combines the residential and commercial scopes for air conditioning and refrigeration work. This makes preparation especially important for candidates who need to understand systems used in both residential and commercial settings. The exam may involve practical field knowledge, code application, mechanical system requirements, fuel gas provisions, OSHA construction safety, refrigeration theory, air distribution, heating equipment, evaporative cooling, and hydronic system concepts.\u003c\/p\u003e\n\n\u003cp\u003eThis Arizona CR-39 exam prep product is built for students who want a structured way to study before test day. HVAC and refrigeration exams cover a wide range of topics, and many candidates find it difficult to organize their study time without a clear plan. This online exam prep helps bring the major subject areas together so you can focus on the topics that matter for the trade exam and develop stronger familiarity with the listed reference materials.\u003c\/p\u003e\n\n\u003cp\u003eBecause the Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) exam is an open book test, preparation should include both technical review and reference navigation. Open book testing allows approved references in the exam room, but it does not remove the need to study. Candidates should know where information is located, how the books are organized, and how to move efficiently from a question to the correct reference section.\u003c\/p\u003e\n\n\u003cp\u003eStudents preparing for the Arizona CR-39 exam should use this online exam prep with the supplied references. The books cover OSHA construction safety, fuel gas code requirements, mechanical code provisions, refrigeration and air conditioning theory, boiler operation, duct design, and duct sizing. Together, these materials support a well-rounded study plan for residential and commercial HVAC and refrigeration contractor exam preparation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Details\u003c\/h2\u003e\n\n\u003cp\u003eThe Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) exam is associated with Arizona’s contractor licensing process for air conditioning and refrigeration work. Arizona contractor licensing is administered by the Arizona Registrar of Contractors, and trade examinations are administered through PSI.\u003c\/p\u003e\n\n\u003cp\u003eThe R-39R\/C-39 (CR-39) Air Conditioning and Refrigeration examination content outline lists 80 questions, a 210-minute time limit, and a minimum passing score of 70%. Candidates should prepare for a broad trade exam that covers both technical HVAC knowledge and reference-based information.\u003c\/p\u003e\n\n\u003cp\u003eThe 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, inspections, sizing, and estimating. These topics reflect the range of knowledge needed for contractors working with air conditioning and refrigeration systems in residential and commercial environments.\u003c\/p\u003e\n\n\u003cp\u003eThe content outline includes 12 questions on refrigeration, 12 questions on air conditioning, 12 questions on warm air heating, 8 questions on controls and motors, 4 questions on boilers, 4 questions on ventilation, 4 questions on evaporative coolers, 5 questions on fuel piping systems, 5 questions on water piping systems, 5 questions on steam, hot, chilled, and condensing water, 5 questions on testing, balancing, and inspections, and 4 questions on sizing and estimating.\u003c\/p\u003e\n\n\u003cp\u003eThe exam may also contain questions based on trade knowledge and general industry practices. Candidates should prepare by studying the listed references, reviewing the exam content areas, and practicing how to apply information to real exam-style questions. A successful study routine should include reading, lookup practice, topic review, and repeated reinforcement of weaker areas.\u003c\/p\u003e\n\n\u003cp\u003eBecause the exam is timed, candidates should also build speed and accuracy. With 80 questions and a 210-minute time limit, students should practice answering questions carefully while avoiding spending too much time on a single item. Good preparation helps you recognize which questions can be answered from trade knowledge and which questions require reference lookup.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eOpen Book Test\u003c\/h2\u003e\n\n\u003cp\u003eThe Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) trade exam is an open book test. Candidates are responsible for bringing their own approved reference materials to the examination center. The approved exam-room references include Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, 2018, and International Mechanical Code, 2018.\u003c\/p\u003e\n\n\u003cp\u003eReference materials may be highlighted, underlined, annotated, and indexed before the examination session. Candidates may not write in, highlight, underline, or index references during the exam. Additional loose papers or attached papers are not permitted with the approved references. Tabs must be permanent tabs. Temporary tabs, removable sticky notes, and tabs that can be removed without tearing the page are not allowed.\u003c\/p\u003e\n\n\u003cp\u003eOpen book testing rewards preparation and organization. Candidates should not expect to find every answer instantly. Many questions require understanding the trade concept first, then knowing which book or section applies. For example, a question involving fuel gas piping may require the International Fuel Gas Code, while a question involving mechanical systems, ventilation, ductwork, refrigeration equipment, or installation provisions may require the International Mechanical Code. Safety questions may require OSHA 29 CFR Part 1926.\u003c\/p\u003e\n\n\u003cp\u003eStudents should practice using the books before exam day. Review the table of contents, index, definitions, chapter structure, important tables, safety sections, fuel gas provisions, mechanical installation requirements, and refrigeration-related sections. The more familiar the books become during study, the more useful they are during the exam.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eLicensing Steps\u003c\/h2\u003e\n\n\u003cp\u003eArizona contractor applicants should begin by identifying the correct license classification for the work they plan to perform. The CR-39 Air Conditioning and Refrigeration classification is a dual residential\/commercial classification. It is intended for contractors whose scope includes air conditioning and refrigeration work in both residential and commercial settings within the authorized classification.\u003c\/p\u003e\n\n\u003cp\u003eAfter selecting the license classification, the applicant should review the Arizona Registrar of Contractors requirements for the license. 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 CR-39 classification should prepare for the trade exam and complete any other state licensing steps connected to the application.\u003c\/p\u003e\n\n\u003cp\u003eArizona contractor applicants may also be required to complete the Arizona Statutes and Rules Exam training course, commonly known as the SRE. The SRE is separate from the trade exam. The SRE focuses on Arizona contractor statutes and rules, while the CR-39 trade exam focuses on air conditioning, refrigeration, mechanical systems, fuel gas, OSHA safety, piping, ventilation, boilers, controls, motors, testing, balancing, sizing, and estimating.\u003c\/p\u003e\n\n\u003cp\u003eOnce the required exam obligations are complete, the applicant submits the contractor license application and supporting materials to the Arizona Registrar of Contractors. The state reviews applications according to its licensing rules. Application requirements may include business information, qualifying party information, bonding, background requirements, financial responsibility, and other items required by the state.\u003c\/p\u003e\n\n\u003cp\u003eExam preparation should begin before the test date is close. Candidates should gather the correct references, review the exam content outline, study the CR-39 scope of work, and use online exam prep to build confidence with the topics and books. A steady study schedule is usually more effective than trying to review all HVAC and refrigeration material at the last minute.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eState Requirements\u003c\/h2\u003e\n\n\u003cp\u003eThe Arizona Registrar of Contractors issues contractor licenses for residential work, commercial work, and dual residential\/commercial scopes. The CR designation identifies a dual residential\/commercial license classification. The CR-39 classification is tied to air conditioning and refrigeration work within the authorized residential and commercial scope.\u003c\/p\u003e\n\n\u003cp\u003eThe Arizona Air Conditioning and Refrigeration classification allows the licensee to install, alter, and repair refrigeration and evaporative cooling systems. Candidates should prepare for the technical knowledge needed to understand both residential and commercial HVAC and refrigeration work. This includes system operation, mechanical code requirements, fuel gas requirements, safety practices, equipment installation, and field procedures.\u003c\/p\u003e\n\n\u003cp\u003eAir conditioning and refrigeration work can involve a wide range of jobsite responsibilities. Contractors may encounter refrigeration equipment, cooling systems, warm air heating systems, duct systems, air distribution equipment, ventilation systems, evaporative coolers, boilers, hydronic systems, fuel piping, water piping, steam piping, chilled water piping, condensing water systems, controls, motors, inspections, testing, balancing, and estimating. The CR-39 exam preparation process should reflect that broad scope.\u003c\/p\u003e\n\n\u003cp\u003ePassing the trade exam is an important step in the licensing process, but it does not automatically issue a contractor license. The applicant must also satisfy the Arizona Registrar of Contractors application requirements for the selected license classification. Exam prep should be treated as one major part of the full licensing path.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eReference Books\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCode of Federal Regulations - 29 CFR Part 1926 (OSHA)\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis construction safety reference covers federal OSHA standards for construction work. It supports preparation for safety-related questions involving jobsite hazards, protective measures, access, equipment, excavation, fall protection, personal protective equipment, ladders, scaffolding, and general construction safety practices.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternational Fuel Gas Code, 2018\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe 2018 International Fuel Gas Code covers fuel gas system requirements, including gas piping, appliances, combustion air, venting, installation rules, sizing, materials, and safety provisions. It is an important code reference for fuel piping and gas-fired equipment topics.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternational Mechanical Code, 2018\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe 2018 International Mechanical Code covers mechanical systems, ventilation, duct systems, refrigeration, exhaust, combustion air, equipment installation, piping, and related mechanical requirements. It is a key code reference for HVAC and refrigeration exam preparation.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModern Refrigeration and Air Conditioning, 22nd edition\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis trade reference supports study of refrigeration principles, air conditioning systems, equipment components, service practices, electrical controls, motors, troubleshooting, system operation, and HVAC terminology used in the field.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Pressure Boilers 5th Edition\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis reference supports review of low-pressure boiler systems, boiler components, operation, safety devices, controls, steam and hot water systems, maintenance concepts, and boiler-related terminology.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual D, 2016, 3rd Ed\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis duct design reference supports study of duct design principles, airflow, duct sizing, friction rate, fittings, balancing considerations, and system layout concepts that help candidates understand duct-related questions.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuctulator\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe duct calculator supports review of duct sizing, airflow, velocity, friction loss, and air distribution relationships. It is useful for understanding sizing and estimating concepts connected to duct systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eTest Information and Study Materials\u003c\/h2\u003e\n\n\u003cp\u003eThe Arizona CR-39 exam preparation process should begin with the exam content outline. Refrigeration, air conditioning, and warm air heating are major subject areas. Candidates should review the refrigeration cycle, compressors, condensers, evaporators, metering devices, refrigerants, cooling equipment, heating equipment, heat transfer, airflow, temperature control, system operation, and basic troubleshooting concepts.\u003c\/p\u003e\n\n\u003cp\u003eControls and motors are also important. HVAC and refrigeration systems depend on electrical components that start, stop, protect, and regulate equipment. Candidates should study thermostats, relays, contactors, motors, motor protection, control circuits, safety switches, control wiring, electrical terminology, and system sequence of operation.\u003c\/p\u003e\n\n\u003cp\u003eBoilers, ventilation, and evaporative coolers appear as separate content areas. Boiler preparation should include low-pressure boiler components, safety devices, controls, steam and hot water operation, maintenance concepts, and system terminology. Ventilation preparation should include air movement, exhaust, outdoor air, duct systems, mechanical ventilation requirements, and code-related concepts. Evaporative cooler preparation should include components, operation, water supply, airflow, maintenance, and installation considerations.\u003c\/p\u003e\n\n\u003cp\u003eFuel piping systems require careful review of the International Fuel Gas Code. Candidates should become familiar with gas piping materials, pipe sizing concepts, appliance connections, combustion air, venting, installation requirements, shutoff valves, pressure, testing, and safety provisions. Fuel gas questions often require both trade understanding and reference-book lookup skills.\u003c\/p\u003e\n\n\u003cp\u003eWater piping systems and hydronic topics should also be studied. The exam content includes water piping systems as well as steam, hot, chilled, and condensing water. Candidates should review piping arrangements, pumps, valves, chilled water systems, condenser water systems, hot water systems, steam concepts, heat exchange, circulation, insulation, supports, and balancing principles.\u003c\/p\u003e\n\n\u003cp\u003eTesting, balancing, and inspections are practical field topics. Candidates should understand system startup, airflow measurement, pressure checks, performance verification, inspection points, balancing procedures, equipment checks, and general commissioning concepts. These topics may require applying trade knowledge to real-world jobsite situations.\u003c\/p\u003e\n\n\u003cp\u003eSizing and estimating preparation should include duct sizing relationships, airflow, velocity, friction loss, equipment considerations, material quantities, labor planning, and careful interpretation of the question. Manual D and the Ductulator can help reinforce air distribution concepts, while the mechanical code and trade references support broader system knowledge.\u003c\/p\u003e\n\n\u003cp\u003eOnline exam prep helps candidates organize these topics into a practical study routine. A useful approach is to review one subject area at a time, locate the related information in the reference books, answer exam-style questions, and then return to any missed topics for additional study. Repeating this process helps improve retention and reference navigation.\u003c\/p\u003e\n\n\u003cp\u003eSince the CR-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.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow 1 Exam Prep Helps You Reach Your Goal\u003c\/h2\u003e\n\n\u003cp\u003e1 Exam Prep helps Arizona contractor candidates prepare with organized study guidance, trade-focused review, and practical exam preparation. For the Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) exam, that means helping students focus on the HVAC, refrigeration, mechanical code, fuel gas, OSHA safety, piping, ventilation, boiler, controls, motors, sizing, estimating, testing, and balancing topics connected to the exam.\u003c\/p\u003e\n\n\u003cp\u003eThis online exam prep product gives students a structured way to study. Instead of working through several references without a plan, candidates can follow preparation material that connects directly to the exam content areas. That structure helps make the study process more manageable and keeps attention on the topics most relevant to the CR-39 trade exam.\u003c\/p\u003e\n\n\u003cp\u003e1 Exam Prep also supports reference navigation. Since the CR-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.\u003c\/p\u003e\n\n\u003cp\u003ePractice-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.\u003c\/p\u003e\n\n\u003cp\u003eContractor exams reward preparation, consistency, and familiarity with the source material. 1 Exam Prep helps students approach the Arizona CR-39 exam with a focused study plan, stronger trade review, and better confidence using the references that support the test.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eFAQ Section\u003c\/h2\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat is the Arizona Air Conditioning and Refrigeration Residential \/ Commercial Contractor (CR-39) exam?\u003c\/h2\u003e\n\u003cp\u003eIt is the trade exam connected to Arizona’s dual residential\/commercial air conditioning and refrigeration contractor classification. The exam covers HVAC, refrigeration, mechanical systems, fuel gas, OSHA safety, controls, motors, boilers, piping, ventilation, testing, balancing, sizing, and estimating topics.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the Arizona CR-39 contractor exam open book?\u003c\/h2\u003e\n\u003cp\u003eYes. The Arizona CR-39 trade exam is an open book test. Candidates are responsible for bringing their own approved references and should become familiar with the books before exam day.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow many questions are on the Arizona CR-39 exam?\u003c\/h2\u003e\n\u003cp\u003eThe R-39R\/C-39 (CR-39) Air Conditioning and Refrigeration examination content outline lists 80 questions.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much time is allowed for the Arizona CR-39 exam?\u003c\/h2\u003e\n\u003cp\u003eThe examination content outline lists a 210-minute time limit.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat passing score is required for the Arizona CR-39 exam?\u003c\/h2\u003e\n\u003cp\u003eThe minimum passing score listed for the examination is 70%.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat does the Arizona CR-39 classification cover?\u003c\/h2\u003e\n\u003cp\u003eThe Arizona Air Conditioning and Refrigeration classification allows the licensee to install, alter, and repair refrigeration and evaporative cooling systems within the authorized residential and commercial scope.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhich references are allowed in the examination center?\u003c\/h2\u003e\n\u003cp\u003eThe approved exam-room references include Code of Federal Regulations - 29 CFR Part 1926 (OSHA), International Fuel Gas Code, 2018, and International Mechanical Code, 2018.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhich books are included in this study list?\u003c\/h2\u003e\n\u003cp\u003eThe supplied study list includes OSHA 29 CFR Part 1926, 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 Ed, and Ductulator.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes online exam prep replace the reference books?\u003c\/h2\u003e\n\u003cp\u003eNo. Online exam prep should be used with the reference materials. The books provide the source material, while the exam prep helps organize review, reinforce key topics, and improve your ability to apply the information.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWho administers Arizona contractor trade exams?\u003c\/h2\u003e\n\u003cp\u003eArizona contractor trade examinations are administered through PSI as part of the Arizona Registrar of Contractors licensing process.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes this exam prep guarantee a passing score?\u003c\/h2\u003e\n\u003cp\u003eNo. 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.\u003c\/p\u003e\n\n\n","brand":"1 Exam Prep","offers":[{"title":"Default Title","offer_id":46131255967801,"sku":null,"price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1789\/0861\/files\/AZ-AirConditioning_RefrigerationCR-3-PRACTICE.jpg?v=1782752522","url":"https:\/\/1examprep.com\/products\/arizona-air-conditioning-and-refrigeration-residential-commercial-contractor-cr-39-exam-online-practice-questions","provider":"1 Exam Prep","version":"1.0","type":"link"}