Arizona Plumbing Residential / Commercial Contractor (CR-37) - Books & Course Rental - Exam Room Approved

The Arizona Plumbing Residential / Commercial Contractor (CR-37) - Books & Course Rental - Exam Room Approved package is built for contractors preparing for the Arizona CR-37 Plumbing exam with rental reference books and structured online study support. This package gives students access to the listed plumbing, fuel gas, mechanical, OSHA, sprinkler, wastewater, math, pipe trade, boiler, utility, and hydronic heating references while also providing 6 months of course access for organized exam preparation.

The Arizona CR-37 Plumbing classification is a dual residential and commercial plumbing contractor classification. It is designed for contractors pursuing a license path that combines the residential and commercial plumbing scopes. Because this exam covers a wide range of plumbing trade knowledge, preparation should include code navigation, jobsite safety, plumbing calculations, fuel gas systems, drainage and venting, water supply, storm drainage, fire sprinkler concepts, septic and sewer topics, hydronics, and practical field knowledge.

This books and course rental option is ideal for students who want access to the reference materials without purchasing every book outright. Open-book contractor exams require more than having the books on test day. Students need to know how the references are organized, where major sections are located, how to use indexes and tables, and how to move quickly between code books and trade references. The course access helps organize study time, while the rental books let students practice with the materials throughout the preparation period.

This package is priced at $1,390 plus a $800 refundable deposit, for a total of $2,190. The refundable deposit applies to the rental books and is separate from the rental price. Students receive the listed rental book package along with 6 months of course access to support preparation for the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam.

Please allow up to 15 business days for book & course rental -exam room approved package orders

Exam Details

The Arizona Plumbing Residential / Commercial Contractor (CR-37) exam is connected to the dual plumbing classification. The CR-37 exam is administered as the plumbing commercial examination and is used for the CR-37 plumbing classification. The exam contains 100 questions, requires a 70% minimum passing score, and allows 240 minutes for testing.

The published content outline includes drainage waste and vents, indirect waste, water supply systems, backflow prevention, roof drains and storm drainage systems, plumbing fixtures including water heaters and accessibility, general knowledge, specialty plumbing, interceptors and traps, fuel gas, septic and sewer, hydronics, fire sprinklers, and excavation. These areas reflect the broad range of knowledge needed by a plumbing contractor working across residential and commercial environments.

Students should prepare for both code-based questions and practical trade knowledge. The International Plumbing Code is central to many plumbing exam topics, including drainage, vents, fixtures, water supply, traps, cleanouts, and storm drainage. The International Fuel Gas Code supports fuel gas piping, appliance connections, combustion air, venting, sizing, and related safety requirements. The International Mechanical Code supports mechanical and hydronic topics that may connect with plumbing and heating work.

The exam also requires awareness of construction safety and excavation practices. OSHA 29 CFR Part 1926 supports safety preparation, while the Arizona 811 - Arizona Blue Stake Brochure supports utility awareness and safe digging concepts. Sprinkler topics are supported by NFPA 13, NFPA 13D, and NFPA 13R, while wastewater topics are supported by the Arizona Administrative Code wastewater reference. Math and trade reference materials support calculations, layout, piping information, boiler concepts, and hydronic heating knowledge.

Open Book Test

The Arizona Plumbing Residential / Commercial Contractor (CR-37) exam is an open-book test. Approved references may be brought into the examination center, and students are responsible for bringing their own references. Reference materials may be highlighted, underlined, annotated, or indexed before the exam session, but they may not be written in during the examination. Permanent tabs are allowed, while temporary removable tabs are not allowed.

An open-book exam still requires serious preparation. The number of references can feel overwhelming to students who wait until test day to start using the books. The best approach is to study with the books regularly, learn each book’s layout, and practice finding information quickly. A plumbing question may require the International Plumbing Code, a gas piping question may require the International Fuel Gas Code, a safety question may require OSHA, and a sprinkler question may require an NFPA reference. Knowing which book to use is part of the preparation process.

Students should also practice using tables, definitions, indexes, and chapter headings. Many code questions depend on locating specific requirements, while trade knowledge questions may require understanding how plumbing systems are installed and used in the field. The rental books and course access work together to help students prepare for both reference navigation and trade understanding.

Licensing Steps

Arizona contractor licensing is handled through the Arizona Registrar of Contractors. Contractors pursuing the CR-37 Plumbing classification should follow the state licensing process for the proper license type and classification. The CR-37 is a dual residential and commercial plumbing classification, so students preparing for this license path should understand the residential and commercial scope connected to plumbing work.

A practical licensing path begins with confirming that CR-37 is the correct classification for the work the business plans to perform. The applicant then identifies the qualifying party, gathers business and application information, completes required licensing steps, and follows the Arizona ROC instructions for the license application. The qualifying party is the person who demonstrates the trade knowledge and experience connected to the classification.

Exam preparation should begin before the student feels rushed. The CR-37 plumbing exam covers many subject areas, and the reference list is substantial. Students who begin studying early have more time to learn the books, practice finding answers, and review trade concepts in smaller, more manageable study sessions. This package supports that approach with 6 months of course access and rental books for hands-on reference practice.

Applicants should also remember that exam preparation and license approval are separate parts of the process. This product supports preparation for the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam. Licensing approval is handled by the Arizona Registrar of Contractors and depends on the applicant’s complete licensing file, qualifications, and compliance with state requirements.

State Requirements

The Arizona Registrar of Contractors regulates contractor licensing in Arizona. The CR-37 Plumbing classification is associated with residential and commercial plumbing contracting work. Contractors pursuing this classification should be prepared to meet Arizona ROC requirements, complete the appropriate application materials, and comply with the rules that apply to licensed contractors in the state.

The CR-37 plumbing scope includes plumbing work connected to piping, fixtures, appliances, water supply, venting, sanitary drainage, fuel gas, compressed air, vacuum systems, hot water heating, hot water supply, hydronic systems, and related plumbing work within the limits of the classification. Because the classification combines residential and commercial plumbing, students should prepare for a wide range of field situations and code requirements.

State requirements may include examination or training requirements, qualifying party information, business entity information, background-related items, bonding or financial responsibility requirements, and other licensing documents required by the Arizona Registrar of Contractors. Students should use the official state application instructions when completing the licensing process.

Reference Books

The following rental books are included with this Arizona Plumbing Residential / Commercial Contractor (CR-37) Books & Course Rental package:

• Included Rental Book: Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  A construction safety reference covering OSHA standards related to jobsite safety, hazard awareness, excavation, tools, ladders, scaffolds, protective equipment, and construction work practices.
• Included Rental Book: International Fuel Gas Code, 2018
  A fuel gas code reference covering gas piping systems, appliance connections, combustion air, venting, sizing, materials, shutoff valves, regulators, and fuel gas installation safety.
• Included Rental Book: International Mechanical Code, 2018
  A mechanical code reference covering mechanical equipment, ventilation, combustion systems, hydronic concepts, appliances, exhaust systems, and related installation standards.
• Included Rental Book: International Plumbing Code, 2018
  A plumbing code reference covering water supply, sanitary drainage, venting, fixtures, traps, cleanouts, materials, pipe sizing, storm drainage, and plumbing system requirements.
• Included Rental Book: NFPA 13: Installation of Sprinkler Systems, 2019
  A sprinkler system reference covering installation standards, system components, water supplies, spacing, protection areas, and fire sprinkler requirements.
• Included Rental Book: NFPA 13D - Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2019
  A residential sprinkler reference covering one- and two-family dwellings and manufactured homes, including installation concepts, system components, and water supply considerations.
• Included Rental Book: NFPA 13R - Sprinkler Systems for Residential Occupancies up to and Including Four Stories in Height, 2019
  A sprinkler reference covering residential occupancies up to and including four stories, including system installation requirements, coverage concepts, and fire protection provisions.
• Included Rental Book: On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006
  An Arizona wastewater reference covering on-site wastewater treatment facility provisions, permitting concepts, and related state rule material for septic and sewer preparation.
• Included Rental Book: Mathematics for Plumbers and Pipefitters, 8th Edition
  A trade math reference supporting plumbing and pipefitting calculations, offsets, slopes, measurements, formulas, conversions, and field problem-solving.
• Included Rental Book: IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
  A pipe trades reference covering pipe materials, fittings, symbols, formulas, conversions, measurements, layout information, and practical pipe trade data.
• Included Rental Book: Boiler Operator’s Guide, 5th Edition
  A boiler systems reference covering boiler operation concepts, components, controls, safety, maintenance considerations, and heating system fundamentals.
• Included Rental Book: Arizona 811 - Arizona Blue Stake Brochure
  A utility location and excavation awareness reference focused on underground utility notification, safe digging practices, and damage prevention.
• Included Rental Book: Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022
  A hydronic heating reference covering residential and light commercial heating systems, system design concepts, controls, piping arrangements, components, and practical heating applications.

Exam Room Approved Books

This Arizona Plumbing Residential / Commercial Contractor (CR-37) package is built around the following exam-room-approved books:

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
• International Fuel Gas Code, 2018
• International Mechanical Code, 2018
• International Plumbing Code, 2018
• NFPA 13: Installation of Sprinkler Systems, 2019
• NFPA 13D - Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2019
• NFPA 13R - Sprinkler Systems for Residential Occupancies up to and Including Four Stories in Height, 2019
• On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006
• Mathematics for Plumbers and Pipefitters, 8th Edition
• IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
• Boiler Operator’s Guide, 5th Edition
• Arizona 811 - Arizona Blue Stake Brochure
• Modern Hydronic Heating for Residential and Light Commercial Buildings, John Siegenthaler, P.E., 2022

Students should study these books as working tools. The books are most useful when students know which reference applies to each type of question. Plumbing code questions usually point to the International Plumbing Code. Fuel gas questions generally require the International Fuel Gas Code. Safety questions may require OSHA. Septic and sewer questions may require the Arizona wastewater reference. Sprinkler questions may require NFPA references. Math and field-reference questions may require the pipe trade and plumbing math books.

Test Information and Study Materials

Strong preparation for the Arizona CR-37 Plumbing exam should include both subject review and reference-navigation practice. Students should first become familiar with the International Plumbing Code because it supports many core plumbing topics. Important areas include drainage, waste and vents, water supply systems, fixtures, traps, cleanouts, storm drainage, indirect waste, and specialty plumbing systems.

The International Fuel Gas Code should be studied for fuel gas piping, appliance installation, combustion air, venting, shutoff valves, regulators, materials, and sizing. Fuel gas questions can involve both code requirements and practical understanding, so students should practice using tables and definitions as part of their study routine.

The International Mechanical Code, Boiler Operator’s Guide, and Modern Hydronic Heating reference support mechanical, boiler, and hydronic preparation. Students should understand the basic relationships between piping, heating equipment, controls, pumps, pressure, temperature, and system layout. Hydronics is a specific subject area on the content outline, so this part of the study plan should not be ignored.

OSHA 29 CFR Part 1926 helps students prepare for construction safety and excavation-related topics. Contractors should be familiar with safe work practices, protective equipment, hazard recognition, ladders, scaffolds, tools, trenching, excavation, and general construction safety concepts. Arizona 811 utility awareness supports safe digging and underground utility notification concepts, which are also important for plumbing contractors.

NFPA 13, NFPA 13D, and NFPA 13R support fire sprinkler preparation. Students should understand which sprinkler reference applies to which type of occupancy or system. The Arizona wastewater reference supports septic and sewer topics, while Mathematics for Plumbers and Pipefitters and IPT’s Pipe Trades Handbook support calculations, pipe trade data, formulas, conversions, layout, and practical field reference needs.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps students prepare for the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam with organized study guidance, trade-focused review, and practice-oriented preparation. This package is designed to give students a structured way to study the materials instead of trying to work through a large stack of books without direction.

The course access helps organize the study process around the topics that matter for plumbing contractor exam preparation. Students can focus on code navigation, trade concepts, safety review, calculations, and reference use. The rental books allow students to practice with the materials throughout the study period, helping them become more comfortable with the books before exam day.

Reference navigation is especially important for open-book exams. 1 Exam Prep encourages students to learn tables of contents, indexes, definitions, charts, and chapter layouts. This is useful because the CR-37 exam pulls from multiple areas of the plumbing trade. A single study session may involve plumbing code, fuel gas, OSHA, sprinkler systems, wastewater, hydronics, and pipe trade math.

This package also supports confidence-building through consistent study structure. Students can review important topics, practice locating information, and build a repeatable approach for answering questions. While no course can guarantee a passing score or licensing approval, a well-organized study plan can help students approach the exam with better preparation and less confusion.

FAQ Section

What is included in this Arizona CR-37 books and course rental package?

This package includes the listed rental reference books for the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam preparation path and 6 months of course access.

How much does this CR-37 rental package cost?

The rental price is $1,390 plus a $800 refundable deposit, for a total of $2,190.

Is the Arizona CR-37 Plumbing exam open book?

Yes. The Arizona Plumbing Residential / Commercial Contractor (CR-37) exam is an open-book test. Students should prepare by learning how to use the approved references quickly and accurately.

How long do I get course access?

This books and course rental package includes 6 months of course access.

What is the difference between CR-37 and C-37?

The CR-37 is the dual residential and commercial plumbing contractor classification, while C-37 is associated with commercial plumbing work. Students should choose the classification that matches the license path and scope of work they are pursuing.

How many questions are on the Arizona CR-37 Plumbing exam?

The Arizona CR-37 Plumbing exam contains 100 questions, has a 70% minimum passing score, and allows 240 minutes for testing.

Why should I study with the books before the exam?

Open-book exams require fast reference navigation. Studying with the books before the exam helps students learn where information is located, which reference applies to each topic, and how to move through the materials more efficiently.

Does this package guarantee that I will pass?

No. This package provides rental books, course access, study organization, and preparation support, but results depend on each student’s study time, trade knowledge, reference-navigation skills, and test-day performance.

Who is this package designed for?

This package is designed for contractors, qualifying parties, and plumbing professionals preparing for the Arizona Plumbing Residential / Commercial Contractor (CR-37) exam who want rental books and structured course access in one package.