The 1 Package: All-Inclusive Arizona Plumbing, Including Solar Residential Contractor (R-37) Exam, Licensing & Business Setup Solution

Prepare for the Arizona Plumbing, Including Solar Residential Contractor R-37 exam while building the licensing and business foundation needed to operate professionally. The 1 Package combines trade exam preparation, a complete reference-book library, contractor application assistance, business formation, EIN filing, and contractor compliance guidance in one coordinated solution.

This all-inclusive Arizona R-37 package is designed for experienced plumbers, solar water-heating professionals, pipefitters, hydronic-heating technicians, qualifying parties, supervisors, and business owners pursuing an Arizona residential plumbing contractor license that includes solar work. Instead of obtaining books, course access, licensing support, and business services from multiple providers, customers receive an organized path through the major stages of exam preparation and contractor business setup.

The preparation program addresses plumbing codes, fuel-gas systems, mechanical systems, water distribution, drainage, waste and vent systems, residential sprinkler systems, hydronic heating, boilers, wastewater treatment, pipe-trade calculations, construction safety, and solar water or pool-heating systems. Candidates can develop both technical understanding and practical reference-navigation skills using the books included with the package.

Arizona contractor examinations require candidates to understand trade principles and locate information efficiently. The extensive R-37 reference library covers several specialized areas, so preparation should involve more than reading. Candidates should learn the purpose of each reference, recognize which book applies to a question, and practice locating relevant sections under timed conditions.

The package includes one year of course access, providing time to create a consistent preparation schedule. Course study can include code review, trade calculations, reference-book navigation, practice questions, and focused review of subjects that require additional attention.

The 1 Package also supports the steps beyond exam preparation. Application Service assists with organizing the Arizona contractor licensing process. Business Formation establishes an LLC or corporation, EIN Filing helps create the federal tax identity used by the business, and Contractor Compliance Guidance supports a clearer understanding of responsibilities associated with operating an Arizona residential plumbing company.

Exam Details

The Arizona Registrar of Contractors administers contractor licensing in Arizona, while PSI administers the trade examination program. Applicants pursuing the R-37 Plumbing, Including Solar Residential classification must complete the examination and licensing requirements that apply to the qualifying party and business entity.

The qualifying party is the individual whose trade experience and examination qualifications support the contractor license. The qualifying party must satisfy the applicable Arizona requirements and remain associated with the licensed business in the capacity recognized by the state.

The R-37 scope includes the installation and repair of residential water and gas piping systems, fire-protection systems, sewage-treatment systems, fixtures, vents, industry-related devices, and solar applications. The classification includes the applicable R-37R residential plumbing subclassifications.

The R-37 trade examination contains 100 questions. Candidates are allowed 240 minutes and must earn a minimum score of 70 percent. The exam may include questions involving code requirements, practical plumbing knowledge, calculations, safety, installation methods, system components, and solar applications.

Exam subjects may involve water supply and distribution, sanitary drainage, vents, fixtures, fuel-gas piping, mechanical systems, hydronic heating, boilers, fire sprinklers, wastewater treatment, excavation safety, utility-location practices, solar water heating, and solar pool heating.

Arizona contractor applicants are also subject to the state’s Statutes and Rules requirement unless an approved waiver applies. This portion is separate from the R-37 trade examination and addresses laws and rules affecting licensed contractors.

Passing the examination does not automatically issue a contractor license. The Arizona Registrar of Contractors must review the complete application, qualifying-party information, background-check documentation, business records, bond, financial-protection requirements, and other required materials.

Open Book Test

The Arizona R-37 Plumbing, Including Solar Residential trade examination is an open-book test using approved reference materials. Candidates may consult permitted books during the examination, but the number and variety of references make organized preparation essential.

An open-book exam does not mean every answer can be found through a quick search. Candidates may need to interpret code language, apply a formula, compare installation requirements, select a pipe size, recognize a safety hazard, or determine which standard controls the situation described.

All books included in this package are highlighted and Tabbed. Highlighting draws attention to useful provisions, formulas, tables, definitions, system requirements, and safety information. Tabs help candidates move between major chapters and technical subjects more efficiently.

Candidates should practice identifying the correct book before beginning a lookup. Fuel-gas questions may require the International Fuel Gas Code, while drainage and fixture questions may require the International Plumbing Code. Sprinkler questions may involve NFPA 13, NFPA 13D, or NFPA 13R, depending on the building and system described.

All references remain subject to the testing provider’s current inspection and security rules. Candidates should not add loose pages, removable notes, unauthorized documents, or electronic materials. Regular practice with the prepared references helps make the tab locations and book organization familiar before exam day.

Licensing Steps

1. Confirm the R-37 classification. Review the residential plumbing and solar scope to determine that it matches the services the business intends to offer.
2. Select the qualifying party. Identify the individual who will satisfy the applicable experience and examination requirements.
3. Prepare for the trade exam. Use the included course, highlighted and tabbed references, calculations, code exercises, and practice questions.
4. Complete the required examinations. Pass the R-37 trade exam and complete the Arizona Statutes and Rules requirement unless an authorized waiver applies.
5. Form the business entity. Use the included Business Formation service to establish an LLC or corporation.
6. Obtain the EIN. Complete the included IRS EIN filing for business banking, taxation, payroll, and hiring.
7. Complete background-check requirements. Follow the Arizona licensing process for each person named on the application.
8. Prepare the contractor application. Organize qualifying-party information, examination results, experience records, entity documents, and required disclosures.
9. Obtain the required license bond. Arrange the bond applicable to the residential specialty classification and anticipated volume of work.
10. Address residential financial protection. Complete the applicable Residential Contractors’ Recovery Fund requirement or approved alternative.
11. Submit the application. File the completed application and supporting documentation with the Arizona Registrar of Contractors.
12. Wait for license issuance. Do not offer or perform work requiring the R-37 license until the state has approved the application and issued an active license.

State Requirements

The R-37 license is a residential specialty classification. It covers residential plumbing work within the scope established by the Arizona Registrar of Contractors, including applicable solar plumbing systems. Commercial plumbing work may require a commercial or dual classification.

The proposed qualifying party must demonstrate the qualifications required for the classification. Experience documentation may need to describe plumbing responsibilities, project types, systems installed or repaired, supervisory duties, and the length of relevant trade experience.

The legal entity applying for the license must be properly formed and identified. Arizona may issue contractor licenses to eligible sole proprietorships, partnerships, limited liability companies, and corporations. The business name, ownership records, EIN documentation, bond, and application should remain consistent.

Arizona requires a contractor license bond. The required amount depends on the license category and anticipated annual gross volume. Residential contractors must also satisfy the state’s residential financial-protection requirements through the applicable Recovery Fund process or authorized alternative.

Applicants must submit required examination results and supporting documentation within the applicable acceptance period. Background checks are also part of the licensing process for individuals named on the contractor application.

After issuance, the contractor must work within the authorized R-37 scope, maintain the required bond, renew the license, and keep licensing records current. Changes involving the business entity, ownership, qualifying party, address, or bond may require additional filings.

Reference Books

• Included Book: Code of Federal Regulations – 29 CFR Part 1926 (OSHA)
  Covers construction safety standards involving excavation, trenching, personal protective equipment, ladders, tools, electrical hazards, material handling, and jobsite responsibilities.
• Included Book: International Fuel Gas Code, 2018
  Addresses fuel-gas piping, sizing, installation, combustion air, venting, appliances, testing, and related safety provisions.
• Included Book: International Mechanical Code, 2018
  Covers mechanical systems, equipment, ventilation, combustion air, exhaust, hydronic systems, and related installation requirements.
• Included Book: International Plumbing Code, 2018
  Addresses fixtures, water distribution, sanitary drainage, vents, traps, storm drainage, materials, sizing, and plumbing-system installation.
• Included Book: NFPA 13: Installation of Sprinkler Systems, 2019
  Provides requirements for sprinkler-system design, components, water supplies, installation, testing, and acceptance.
• Included Book: NFPA 13D, 2019
  Covers sprinkler systems for one- and two-family dwellings and manufactured homes.
• Included Book: NFPA 13R, 2019
  Addresses residential sprinkler systems for qualifying occupancies up to and including four stories in height.
• Included Book: Arizona Administrative Code Title 18, Chapter 9, 2006
  Supports study of Arizona provisions affecting on-site wastewater treatment facilities.
• Included Book: Mathematics for Plumbers and Pipefitters, 8th Edition
  Supports trade calculations involving measurements, geometry, pipe lengths, offsets, areas, volumes, and practical field mathematics.
• Included Book: IPT’s Pipe Trades Handbook, Robert A. Lee, 2016
  Provides field-oriented pipe-trade information, formulas, measurements, fittings, materials, and technical reference data.
• Included Book: Boiler Operator’s Guide, 5th Edition
  Covers boiler systems, controls, operation, maintenance, safety, combustion, and related equipment concepts.
• Included Book: Arizona 811 – Arizona Blue Stake Brochure
  Addresses safe excavation planning and utility-location practices before digging.
• Included Book: Modern Hydronic Heating for Residential and Light Commercial Buildings, 2022
  Covers hydronic system design, heat sources, distribution, controls, piping arrangements, circulators, and system performance.
• Included Book: Solar Water and Pool Heating Design and Installation Manual
  Supports preparation involving solar thermal principles, collectors, storage, circulation, controls, system sizing, installation, and safety.

All books are highlighted and Tabbed. Candidates should use the prepared books throughout the course to become familiar with chapter organization, indexes, tables, formulas, and frequently tested subjects.

The package includes a $1,100 refundable deposit. The deposit is refundable when the books are returned within one year in similar condition.

Please allow up to 15 business days for The 1 Package book orders.

Test Information and Study Materials

Effective R-37 preparation should combine code navigation, calculations, trade knowledge, safety review, and timed practice. Begin by learning the purpose of each reference so you can quickly select the most likely source for a question.

Plumbing-code study can include fixtures, potable-water systems, pipe sizing, drainage, waste and vent systems, traps, cleanouts, backflow protection, indirect waste, and storm drainage. Fuel-gas review may include piping materials, sizing, pressure, shutoff valves, appliance connections, combustion air, and venting.

Sprinkler preparation should include familiarity with the differences among NFPA 13, NFPA 13D, and NFPA 13R. Candidates should recognize which standard applies to the building or occupancy described before searching for a requirement.

Trade mathematics should include fractions, decimals, conversions, area, volume, pressure, flow, pipe offsets, slopes, and system-sizing concepts. Hydronic and boiler review may involve heat transfer, piping layouts, pumps, controls, expansion, air removal, and system safety.

Solar study should address collectors, storage tanks, circulation methods, controls, freeze protection, system sizing, pool heating, water heating, installation practices, and maintenance. OSHA review should focus on the construction hazards commonly encountered during plumbing and solar work.

Timed practice helps candidates manage the 240-minute examination. A practical strategy is to answer direct questions first, mark questions requiring longer research, and return to them after completing faster items.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Arizona R-37 candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation, and confidence-building study structure.

The course divides the large reference library into manageable subject areas. Candidates can review plumbing codes, fuel gas, mechanical systems, fire sprinklers, wastewater treatment, hydronic heating, boilers, calculations, OSHA safety, and solar thermal systems through a structured preparation path.

Practice-oriented study helps candidates apply technical information rather than relying only on reading. Reference-navigation exercises encourage students to identify the correct book, select useful keywords, locate the controlling section, and confirm the answer efficiently.

Application Service supports the licensing stage by helping organize business information, qualifying-party records, examination documentation, and required application materials. Business Formation establishes an LLC or corporation, while EIN Filing supports business banking, taxation, hiring, and professional operations.

Contractor Compliance Guidance helps customers understand responsibilities associated with maintaining an Arizona contracting business, operating within the authorized classification, maintaining required records, and keeping licensing information organized.

No preparation course or service can guarantee a passing examination score, license approval, state approval, earnings, or business results. The package provides the books, course access, study structure, application assistance, and business setup services needed to approach the process with stronger organization and confidence.

What is included in The 1 Package?

The package includes 14 reference books, 1 year of course access, Application Service, LLC or corporation formation, EIN Filing with the IRS, and Contractor Compliance Guidance.

What is the total cost?

The package cost is $3,365. A $1,100 refundable book deposit brings the total due to $4,465. The package is all-inclusive with no hidden fees.

How does the refundable deposit work?

The $1,100 book deposit is refundable when the books are returned within one year in similar condition.

Are all books highlighted and tabbed?

Yes. All books are highlighted and Tabbed to support organized study and faster reference navigation.

How long should I allow for the book order?

Please allow up to 15 business days for The 1 Package book orders.

Is the Arizona R-37 exam open book?

Yes. The R-37 trade examination is an open-book test using approved reference materials, subject to the testing provider’s current inspection and security rules.

How many questions are on the exam?

The R-37 examination contains 100 questions. Candidates have 240 minutes and must earn a minimum score of 70 percent.

Does the package include solar preparation?

Yes. The reference library and course preparation include solar water-heating and solar pool-heating subjects associated with the R-37 classification.

Does the package include licensing and business setup?

Yes. Application Service, LLC or corporation formation, EIN filing, and Contractor Compliance Guidance are included.

Does passing the examination automatically issue the license?

No. Passing the exam is one part of the licensing process. The Arizona Registrar of Contractors must review and approve the complete application before issuing the license.