The 1 Package: All-Inclusive Arizona Air Conditioning and Refrigeration Commercial Contractor (C-39) Exam, Licensing & Business Setup Solution

Prepare for the Arizona Air Conditioning and Refrigeration Commercial Contractor C-39 exam while building the licensing and business foundation needed to operate professionally. The 1 Package combines commercial HVAC and refrigeration exam preparation, highlighted and tabbed reference materials, contractor application assistance, business formation, EIN filing, and contractor compliance guidance in one coordinated solution.

This all-inclusive Arizona C-39 contractor package is designed for experienced HVAC technicians, refrigeration mechanics, mechanical supervisors, qualifying parties, estimators, project managers, service professionals, and business owners pursuing authority to perform qualifying commercial air conditioning and refrigeration work in Arizona.

Commercial air conditioning and refrigeration work requires more than installing equipment or replacing components. Contractors must understand refrigeration cycles, comfort cooling, heating, ventilation, fuel-gas systems, boilers, hydronic equipment, duct distribution, airflow, motors, electrical controls, system startup, maintenance, troubleshooting, estimating, and construction safety.

Commercial projects may involve offices, restaurants, retail buildings, schools, medical facilities, hotels, warehouses, apartment properties, industrial buildings, institutional facilities, and tenant improvements. Each project can present different requirements involving equipment capacity, ventilation, fuel use, occupancy, duct design, controls, access, structural coordination, and system performance.

The included International Mechanical Code, 2018 supports preparation involving air conditioning, refrigeration, ventilation, duct systems, boilers, hydronic piping, equipment installation, combustion-related requirements, access, clearances, and testing. The International Fuel Gas Code, 2018 supports preparation involving gas-piping materials, sizing, appliance connections, regulators, shutoff valves, pressure testing, combustion air, and venting.

Modern Refrigeration and Air Conditioning, 22nd Edition supports broad technical preparation involving the refrigeration cycle, refrigerants, compressors, condensers, evaporators, metering devices, airflow, heating, electrical principles, motors, controls, installation, service, and troubleshooting.

Low Pressure Boilers, 5th Edition supports preparation involving steam and hot-water boilers, burners, controls, pressure and temperature devices, safety equipment, piping, water treatment, operation, inspection, and maintenance. Manual D, 2016, 3rd Edition supports study of residential duct-system design principles that also reinforce airflow, friction, velocity, fittings, available static pressure, and distribution-system fundamentals.

The included Ductulator supports practical calculations involving duct dimensions, airflow, friction rate, and velocity. OSHA 29 CFR Part 1926 supports construction-safety preparation involving electrical hazards, ladders, scaffolds, roof access, fall protection, tools, welding and brazing, material handling, personal protective equipment, and commercial jobsite responsibilities.

The package includes 1 year of course access, allowing candidates to prepare around service calls, installation schedules, active projects, employment, and personal responsibilities. The course supports organized trade review, code navigation, HVAC calculations, duct-sizing practice, boiler preparation, and confidence-building study.

The 1 Package also supports the licensing and business stages that follow exam preparation. Application Service helps organize the Arizona contractor licensing process. Business Formation establishes an LLC or corporation, EIN Filing supports banking and tax administration, and Contractor Compliance Guidance helps customers understand responsibilities associated with operating an Arizona commercial air conditioning and refrigeration business.

Exam Details

The Arizona Registrar of Contractors issues separate commercial, residential, and dual contractor licenses. The C-39 Air Conditioning and Refrigeration classification is the commercial specialty license associated with qualifying HVAC and refrigeration work performed on commercial projects.

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

C-39 exam preparation may include refrigeration, comfort cooling, heating, ventilation, duct systems, fuel gas, boilers, hydronic systems, electrical controls, motors, equipment installation, maintenance, troubleshooting, estimating, plan reading, and OSHA safety.

Refrigeration preparation may involve the refrigeration cycle, pressure-temperature relationships, refrigerants, compressors, condensers, evaporators, metering devices, superheat, subcooling, piping, accessories, leak testing, evacuation, charging, startup, and troubleshooting.

Air-conditioning preparation may include equipment capacity, cooling coils, airflow, filtration, humidity, condensate disposal, ventilation, supply-air systems, return-air systems, controls, startup, and system performance.

Heating preparation may involve furnaces, burners, heat exchangers, blowers, filters, combustion air, venting, fuel-gas piping, thermostats, safety devices, and sequence of operation.

Boiler preparation may include hot-water and low-pressure steam systems, burners, pumps, circulators, expansion tanks, air separators, valves, pressure controls, temperature controls, relief devices, low-water cutoffs, water treatment, operation, and maintenance.

Hydronic-system preparation may involve boilers, pumps, heat exchangers, piping arrangements, expansion control, air removal, balancing, heat emitters, controls, system filling, purging, and troubleshooting.

Duct-system preparation may include supply air, return air, exhaust air, duct dimensions, airflow, friction rate, velocity, static pressure, fittings, transitions, dampers, registers, grilles, insulation, leakage, support, and balancing.

Fuel-gas preparation may involve pipe sizing, gas demand, materials, regulators, shutoff valves, appliance connections, pressure testing, combustion air, venting, equipment clearances, and safe startup.

Motor preparation may include single-phase and three-phase motors, capacitors, overloads, starters, contactors, relays, disconnects, rotation, nameplate information, and common troubleshooting procedures.

Control-system preparation may involve thermostats, transformers, relays, contactors, pressure controls, temperature controls, safety switches, low-voltage circuits, sequence of operation, and diagnostic testing.

Commercial plan-reading preparation may involve mechanical plans, equipment schedules, duct layouts, piping diagrams, control diagrams, roof plans, sections, details, specifications, symbols, equipment locations, and coordination with electrical, plumbing, structural, and architectural work.

Estimating preparation may include equipment quantities, duct materials, fittings, refrigerant piping, gas piping, hydronic piping, controls, insulation, labor, lifting equipment, roof access, demolition, disposal, startup, testing, and project scheduling.

OSHA preparation may involve electrical exposure, refrigerant cylinders, pressure systems, hot surfaces, roof work, ladders, fall protection, welding, brazing, tools, lifting, personal protective equipment, housekeeping, and safe commercial construction practices.

Passing the applicable examination does not automatically issue the C-39 contractor license. The Arizona Registrar of Contractors must review and approve the complete application before the business may advertise, bid, contract for, or perform work requiring the classification.

Open Book Test

The Arizona C-39 Air Conditioning and Refrigeration trade examination is an open-book test using approved reference materials. Candidates are responsible for bringing permitted books and following the testing provider’s current requirements regarding editions, highlighting, annotations, indexing, permanent tabs, attachments, calculators, and book inspection.

An open-book format does not eliminate the need for technical knowledge. Candidates must identify the system or component involved, determine the applicable code or trade subject, select the correct reference, locate the relevant information, and apply it within the available examination time.

All books are highlighted and Tabbed. Highlighting draws attention to useful mechanical-code provisions, fuel-gas requirements, refrigeration concepts, boiler information, duct-sizing procedures, formulas, tables, diagrams, and OSHA safety standards. Permanent tabs support faster movement among major chapters and frequently researched subjects.

The references should be used throughout the course rather than opened for the first time on examination day. Repeated navigation practice helps candidates become familiar with indexes, definitions, tables, illustrations, formulas, exceptions, and permanent tab locations.

Questions involving air conditioning, refrigeration, ventilation, ducts, boilers, hydronic equipment, access, clearances, installation, or testing may require the International Mechanical Code.

Questions involving gas piping, appliance connections, regulators, shutoff valves, pressure testing, combustion air, or venting may require the International Fuel Gas Code.

Modern Refrigeration and Air Conditioning supports broader technical questions involving refrigeration, cooling, heating, electrical principles, motors, controls, airflow, installation, service, and troubleshooting.

Low Pressure Boilers supports preparation involving boiler operation, controls, piping, safety devices, water treatment, inspection, and maintenance. Manual D and the Ductulator support preparation involving airflow, friction, velocity, static pressure, duct dimensions, fittings, and distribution-system design.

Questions involving electrical hazards, roof access, fall protection, ladders, tools, welding, brazing, lifting, personal protective equipment, or construction-site safety may require OSHA 29 CFR Part 1926.

Licensing Steps

1. Confirm the C-39 classification. Review the commercial air conditioning and refrigeration scope to make sure it matches the services the business intends to provide.
2. Select the qualifying party. Identify the individual who will satisfy the applicable HVAC and refrigeration experience and examination requirements.
3. Review the examination requirements. Determine which trade and Arizona Statutes and Rules requirements apply to the proposed qualifying party.
4. Prepare for the C-39 exam. Use the included course, highlighted and tabbed references, HVAC calculations, duct-sizing practice, and trade-focused review.
5. Complete the examination process. Pass the applicable trade examination and complete Arizona’s Statutes and Rules requirement unless an authorized waiver applies.
6. Form the business entity. Use the included Business Formation service to establish an LLC or corporation for the commercial HVAC and refrigeration business.
7. Obtain an EIN. Complete the included EIN Filing with the IRS for business banking, tax administration, payroll, employee hiring, and professional operations.
8. Complete applicable background requirements. Follow Arizona’s process for the individuals required to appear on the contractor application.
9. Prepare the license application. Organize qualifying-party information, experience records, examination documentation, business documents, and required disclosures.
10. Obtain the commercial contractor license bond. Arrange the bond required for the commercial specialty classification and anticipated gross volume of work.
11. Submit the application. Provide the complete application and supporting materials to the Arizona Registrar of Contractors.
12. Wait for license issuance. Do not operate under the C-39 classification until Arizona approves the application and issues an active contractor license.

State Requirements

The C-39 classification is an Arizona commercial specialty contractor license associated with qualifying air conditioning and refrigeration work. It does not provide residential contracting authority.

The proposed qualifying party must demonstrate the experience, knowledge, and skills needed to supervise or perform commercial HVAC and refrigeration work. Experience records may describe refrigeration systems, comfort cooling, heating, ventilation, ductwork, fuel gas, boilers, hydronics, controls, commercial projects, estimating, and field supervision.

The qualifying party must remain associated with the applicant business in the capacity recognized by the Arizona Registrar of Contractors. Experience records, examination information, and business documentation should remain consistent throughout the licensing process.

The legal business entity applying for the license must be properly established and identified. The company name, ownership information, qualifying-party records, EIN documentation, contractor bond, and application should remain consistent.

Arizona contractor applicants must complete applicable background and disclosure requirements and provide the identity, experience, examination, and business information required for state review.

A commercial contractor license bond is required. The applicable bond amount depends on the commercial license category and anticipated gross volume of work.

Because C-39 is a commercial-only classification, the residential financial-protection requirements associated with Arizona residential and dual contractor licenses do not apply.

After licensing, the contractor must remain within the authorized C-39 scope, maintain the required bond, renew the license, and keep qualifying-party and business records current.

Reference Books

• Included Book: Code of Federal Regulations – 29 CFR Part 1926 (OSHA)
  Supports study of electrical hazards, ladders, roof access, fall protection, tools, welding, brazing, material handling, personal protective equipment, and commercial construction safety.
• Included Book: International Fuel Gas Code, 2018
  Supports preparation involving gas-piping materials, pipe sizing, appliance connections, regulators, shutoff valves, pressure testing, combustion air, and venting.
• Included Book: International Mechanical Code, 2018
  Covers air conditioning, refrigeration, ventilation, duct systems, boilers, hydronic systems, equipment access, installation, testing, and inspections.
• Included Book: Modern Refrigeration and Air Conditioning, 22nd Edition
  Supports technical study of refrigeration cycles, cooling, heating, airflow, electrical principles, motors, controls, installation, maintenance, and troubleshooting.
• Included Book: Low Pressure Boilers, 5th Edition
  Supports preparation involving steam and hot-water boilers, controls, safety devices, piping, water treatment, operation, inspection, and maintenance.
• Included Book: Manual D, 2016, 3rd Edition
  Supports study of duct-system design, airflow, friction, velocity, static pressure, fittings, available pressure, and distribution-system principles.
• Included Study Tool: Ductulator
  Supports practical calculations involving duct dimensions, airflow, friction rate, and velocity.

All books are highlighted and Tabbed.

The package includes a $550 refundable book 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 C-39 preparation should combine refrigeration, air conditioning, heating, ventilation, boilers, hydronic systems, fuel gas, duct design, electrical controls, estimating, plan reading, and OSHA safety.

Calculation practice may include airflow, friction rate, velocity, duct area, sensible and latent heat, refrigeration relationships, electrical values, fuel-gas demand, equipment capacity, and material quantities.

Refrigeration study may include compressors, condensers, evaporators, metering devices, superheat, subcooling, piping, evacuation, charging, leak testing, controls, and troubleshooting.

Duct preparation may include supply air, return air, fitting losses, available static pressure, airflow distribution, balancing, registers, grilles, dampers, insulation, and leakage.

Boiler and hydronic preparation may include burners, pumps, expansion tanks, air removal, valves, heat exchangers, temperature controls, pressure controls, relief devices, startup, and maintenance.

Safety preparation should address electrical exposure, pressure systems, refrigerant cylinders, roof work, ladders, fall protection, welding, brazing, tools, lifting, personal protective equipment, and housekeeping.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Arizona C-39 candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation, and confidence-building study structure.

The course divides commercial HVAC and refrigeration preparation into manageable subjects, including refrigeration, air conditioning, heating, ventilation, fuel gas, boilers, hydronic systems, controls, motors, ductwork, calculations, plan reading, and safety.

Reference-navigation exercises help candidates identify the correct book, locate useful chapters and tables, interpret technical provisions, and connect calculations with real installation conditions. Practice-oriented preparation strengthens both trade knowledge and exam-day research skills.

The highlighted and tabbed books support efficient navigation, but repeated use remains essential. Working with the references throughout the course helps candidates become familiar with their organization and reduces unnecessary searching during the examination.

Application Service supports the Arizona licensing stage by helping organize qualifying-party information, examination records, business documents, and required application materials. Business Formation establishes an LLC or corporation so the customer has a legally structured commercial HVAC and refrigeration business.

EIN Filing with the IRS provides the federal identification number used to open business bank accounts, manage taxes properly, hire employees, and operate professionally. Contractor Compliance Guidance supports a clearer understanding of responsibilities associated with maintaining the license, bond, qualifying party, business records, and approved scope of work.

No preparation program or business service guarantees an examination result, licensing approval, earnings, or business success. The package provides the references, course access, application support, and business setup services needed to pursue the Arizona C-39 licensing path with stronger organization and confidence.

What is included in The 1 Package?

The package includes six HVAC, refrigeration, mechanical-code, fuel-gas, boiler, duct-design, and construction-safety books, a Ductulator, 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 $2,665. A $550 refundable book deposit brings the total due to $3,215. The package is all-inclusive with no hidden fees.

How does the refundable book deposit work?

The $550 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 C-39 examination open book?

Yes. The Arizona C-39 Air Conditioning and Refrigeration trade examination is open book using approved reference materials under the testing provider’s current rules.

Does C-39 cover residential HVAC work?

No. C-39 is the commercial Air Conditioning and Refrigeration classification. Residential work requires the appropriate residential or dual contractor classification.

Does the package include duct-design preparation?

Yes. Manual D and the included Ductulator support preparation involving airflow, friction rate, velocity, static pressure, fittings, duct dimensions, and distribution-system principles.

Does the package include boiler preparation?

Yes. Low Pressure Boilers supports preparation involving steam and hot-water systems, burners, controls, safety devices, piping, water treatment, operation, inspection, and maintenance.

Does the package include licensing and business setup?

Yes. The package includes Application Service, LLC or corporation formation, EIN Filing with the IRS, and Contractor Compliance Guidance.

Does passing the examination automatically issue the license?

No. The Arizona Registrar of Contractors must review and approve the complete application before issuing the C-39 commercial contractor license.