California
(C-20) Warm-Air Heating, Ventilation
and Air-Conditioning
Apply for the License and Exam
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Contractors State License Board
9821 Business Park Drive
P.O. Box 26000
Sacramento, CA 95826
Phone: (800) 321-2752
Outside CA: (916) 255-3900
www.cslb.ca.gov
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Exam Type
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| CLOSED BOOK |
Exam Content
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| Subject Areas |
% of Questions |
| Planning, Engineering and Design |
27 |
| Fabrication, Installation and Start up |
25 |
| Troubleshooting, Repair, and Maintenance |
25 |
| Safety |
23 |
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| Time Allowed (hours) |
2.5 |
| Passing Grade: |
Pass/Fail |
| The qualifying individual for a contractor’s license is required to pass the written Law and Business and trade examinations unless he or she meets the requirements for a waiver. |
| Part of this exam requires knowledge of business management principles. We offer those study materials on a separate California Law and Business web page. |
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Books NOT Allowed in the Exam
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| 1. |
Modern Refrigeration and Air Conditioning, 18th Edition, 2004, Althous, Turnquist, Bowditch, Bracciana. |
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| 2. |
Heating and Cooling Essentials, Jerry Killenger, LaDonna Killenger. |
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| 3. |
HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition, 2005, SMACNA. |
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| 4. |
California Building Code (California Code of Regulations, Title 24, Part 2), 2010, (based on the 2009 International Building Code), ICC. |
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| 5. |
Building Energy Efficiency Standards for Residential and Nonresidential Buildings, 2008, California Energy Commission. |
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| 6. |
California Electrical Code (California Code of Regulations, Title 24, Part 3), 2010, (based on the 2008 NEC), NFPA. |
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| 7. |
California Mechanical Code (California Code of Regulations, Title 24, Part 4), 2010, (based on 2009 Uniform Mechanical Code), IAPMO. |
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| 8. |
Cal/OSHA Construction Safety Orders, California Code of Regulations, Title 8, Division 1 - Industrial Relations, Chapter 4, Subchapter 4. |
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| 9. |
Manual D - Residential Duct Systems, 1995, Air Conditioning Contractors of America. |
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| 10. |
Manual J - Residential Load Calculations, 2002, Air Conditioning Contractors of America. |
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| 11. |
Manual H - Heat Pump Systems, Air Conditioning Contractors of America. |
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| 12. |
Manual P, Psychrometrics: Theory and Applications, Air Conditioning Contractors of America. |
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| 13. |
Manual CS - Commercial Applications, Systems and Equipment, ACCA. |
| 14. |
Manual RS, Comfort, Air Quality, & Efficiency By Design, Air Conditioning Contractors of America. |
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Recommended Study Materials
California • (C-20) Warm-Air Heating, Ventilation
and Air-Conditioning |
| Product Name |
Price |
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| Comprehensive Tutorial |
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| Practice Tests ( 3 ) |
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When you order the products above, they will be sent to you by e-mail (see FAQ page for delivery times).
If you prefer the files can be burned on to a CD-ROM disc and sent by USPS mail, you must notify us within 3 days of ordering using the form on our "Contact Us" page. |
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