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The following references are recommended to study for the Arizona C-39R (Residential) and L-39 (Commercial) Air Conditioning and Refrigeration Exam. This examination is used to obtain a Arizona C-39R (Residential) and L-39 (Commercial) Air Conditioning and Refrigeration License. Also to become a licensed contractor in Arizona, candidates will also need to pass a business and management exam.
Only the following references are permitted to be taken into the exam.
- OSHA 1926
- International Fuel Gas Code
- International Mechanical Code
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29 CFR OSHA 1926 Construction Industry Regulations & Standards, January 2026 Edition
$76.99View ProductMake compliance with dense government safety regulations simple with the 29 CFR 1926 OSHA Construction Industry Regulations. Updated through January 2026, the book provides you with a comprehensive set of the most up-to-date Construction regulations.
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Modern Refrigeration and Air Conditioning, 22nd Edition
$236.99View ProductThe Modern Refrigeration and Air Conditioning, 22nd Edition is the HVACR standard for a new generation of learners. It correlates to HVAC Excellence and PAHRA accreditation requirements to ensure complete coverage that prepares students for career success.
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ACCA Ductulator – Duct Calculation Slide Rule
$65.99View ProductOne of our most popular catalog items! This durable two-sided plastic sizing wheel comes with a complete instruction manual for residential and commercial duct-sizing procedures. Designed by Hank Rutkowski.
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![Manual D - Residential Duct Systems [ANSI/ACCA 1 Manual D - 2016]](https://www.athomeprep.com/wp-content/uploads/2010/03/ResDuct.jpg)
Manual D – Residential Duct Systems [ANSI/ACCA 1 Manual D – 2016]
$98.99View ProductManual D is the nationally recognized standard for designing residential duct systems, published by the Air Conditioning Contractors of America (ACCA). The 2016 edition, aligned with ANSI standards, outlines the procedures necessary to design efficient, quiet, and code-compliant air distribution systems in single-family homes and townhouses.
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2018 International Mechanical Code (International Code Council Series) 1st Edition
$142.99View ProductThe 2018 International Mechanical Code (International Code Council Series) 1st Edition establishes minimum regulations for mechanical systems using prescriptive and performance-related provisions. The IMC was developed with broad-based principles that make possible the use of new materials, methods and design.
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2018 International Fuel Gas Code (International Code Council Series) 1st Edition
$131.99View ProductThe 2018 International Fuel Gas Code (IFGC), developed by the International Code Council (ICC), establishes minimum regulations for the design, installation, maintenance, and inspection of fuel gas systems. It applies to both residential and commercial buildings and aims to ensure safe and efficient use of natural gas and propane.
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Redi-Tag Permanent Tabs – 375 Blank Tabs
$44.99View ProductRedi-Tag permanent tabs are self-sticking and you can print on your laser printer in minutes or write directly on them. Made of heavy duty, durable plastic that won’t tear of curl. Input and format text using Windows® versions of Microsoft® Word and WordPerfect®. Actual size of tab 1-1/8″ x 1-1/4″. 100 tabs per pack.
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Low Pressure Boilers, 5th Edition
$146.99View ProductThe Low Pressure Boilers, 5th Edition provides a comprehensive overview of the latest information on the safe and efficient operation of low pressure steam and hot water boilers, cooling systems, and related equipment. Each chapter is divided into sections to aid comprehension of key concepts. To assist with preparing for a licensing exam, a separate chapter with test-taking tips and a sample exam is included.
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Arizona Air Conditioning and Refrigeration (Residential/Commercial) R-39R/C-39 (CR-39) Online Exam Prep Course Only
$296.99View ProductThe Arizona Air Conditioning and Refrigeration (Residential/Commercial) R-39R/C-39 (CR-39) Exam Prep topics include terms, principles, administration, installation, venting, duct, combustion air, gas piping, electrical, boilers, exhaust, operation, joist notching and boring, gas pipe sizing, conduits, egress systems, and more. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information.
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Arizona R-39 R and C-39 Tab Pack
$32.99View ProductThe Arizona R-39 R and C-39 Tab Pack – This package includes permanent tabs for all references allowed to be used during the exam.
- Osha
- 2018 International Fuel Gas Code
- 2018 International Mechanical Code
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Arizona Air Conditioning and Refrigeration (Residential/Commercial) R-39R/C-39 (CR-39) Online Exam Prep Complete Package
$1,230.91View ProductArizona Air Conditioning and Refrigeration (Residential/Commercial) R-39R/C-39 (CR-39) Complete Package Includes to Following:
- Arizona Air Conditioning and Refrigeration (Residential/Commercial) R-39R / C-39 Exam Prep
- Osha
- 2018 International Fuel Gas Code
- 2018 International Mechanical Code
- Arizona R-39 R and C-39 Tab Pack
The following references are NOT allowed to be taken into the exam; however, they will be included with the complete package:
- Modern Refrigeration and Air Conditioning, 22nd Edition
- Low Pressure Boilers
- ACCA Manual D
- ACCA Ductulator
The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information.
