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California HVAC License Requirements
Everything you need to legally start and operate an HVAC business in California — licensing, insurance minimums, bonding, and official application links.
Licensing Requirements Checklist
License Type
C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor
Issuing Authority
California Contractors State License Board (CSLB)
Experience Required
4 years of journey-level experience within the last 10 years.
Exam Required
Yes (Law & Business + Trade Exam)
EPA Section 608 Certification
Required federally for handling refrigerants (all states).
Insurance & Bonding
Minimum Insurance
Workers' Comp (if employees); LLCs require $1M Liability Insurance
Surety Bond
$25,000
Fees & Timeline
Application Fee
$650 ($450 Application + $200 Initial License Fee)
Estimated Processing
4 – 12 weeks
Varies by state board workload
Ready to Apply?
Visit the official California Contractors State License Board (CSLB) website to start your HVAC contractor license application for California.
Disclaimer: Information on this page is compiled from publicly available state resources for educational purposes. Requirements change frequently — always verify directly with the California Contractors State License Board (CSLB) before making business decisions.