Free CA C-20 HVAC Exam Prep
California C-20 HVAC Contractor License (CSLB)
Prepare for the CA C-20 HVAC exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.
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Free CA C-20 HVAC Prep Tools
100 Practice Questions
California-specific questions on CSLB licensing, C-20 trade knowledge, CA law/business, and Title 24
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Get contextual hints and wrong-answer explanations powered by AI
2026 Updated
Reflects current CSLB regulations, Title 24 energy code, and California contractor law
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All 100 practice questions are free — no account required
What You'll Study
13 chapters covering the exam topics in this guide
Chapter 1: Introduction & CA C-20 License Overview
3 sections
Chapter 2: CSLB Licensing Law & Business Organization
4 sections
Chapter 3: Business Finances & Taxes
4 sections
Chapter 4: Contracts, Bidding & Estimating
5 sections
Chapter 5: Insurance, Bonds & Mechanics Liens
4 sections
Chapter 6: Employment Law, Payroll & Public Works
5 sections
Chapter 7: Cal/OSHA & Legal Safety Compliance
4 sections
Chapter 8: HVAC Planning, Load Calculations & Estimating
5 sections
Chapter 9: California Title 24 Energy Code & Mechanical Code Compliance
4 sections
Chapter 10: Equipment Installation, Ductwork & System Startup
5 sections
Chapter 11: Refrigeration Cycle, Heat Pumps & Solar-Thermal
3 sections
Chapter 12: Troubleshooting, Repair & Maintenance
4 sections
Chapter 13: Trade Safety & EPA Refrigerant Regulations
4 sections
CA C-20 HVAC Exam Details
California C-20 HVAC Contractor License (CSLB)
Administered by California Contractors State License Board (CSLB)
What's Included
13 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
Free to Start
No credit card required
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