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HVAC Technician License Requirements in California

Issued by: California Contractors State License Board (CSLB)Verified: April 2026
License Required
Required
Application Fee
450.0
Renewal
2 years
Exam Required
Yes
Bond Required
Yes

Requirements

  1. 1Be 18 years of age or older
  2. 2Have at least 4 years of journeyman-level HVAC experience in the past 10 years (C-20 classification)
  3. 3Pass the CSLB contractor's law exam
  4. 4Pass the CSLB C-20 trade exam (Warm-Air Heating, Ventilating and Air-Conditioning)
  5. 5Obtain a contractor's license bond
  6. 6Submit fingerprints (Live Scan) for DOJ/FBI background check
  7. 7Pay the original application fee ($450) and initial license fee ($200 for sole owner)

How to Apply

HVAC contractors in California must hold a CSLB C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) contractor license. Requires 4 years of journeyman-level HVAC experience in the past 10 years, passing law and trade exams, a contractor bond, and fingerprint submission.
Apply at California Contractors State License Board (CSLB)

Costs

Application Fee
450.0
Renewal Fee
450.0
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Frequently Asked Questions

Do I need a license to work as an HVAC technician in California?
Yes. HVAC contractors must hold a CSLB C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) contractor license to legally operate in California on projects valued at $500 or more.
What is the C-20 HVAC license in California?
The C-20 is the Warm-Air Heating, Ventilating and Air-Conditioning contractor classification issued by the CSLB. It covers installation and servicing of heating, cooling, and ventilation systems.
How much experience do I need for a California HVAC contractor license?
You need at least 4 years of journeyman-level HVAC experience within the past 10 years to qualify for a C-20 contractor license.
How much does a California HVAC contractor license cost?
The original application fee is $450. The initial license fee for a sole owner is $200, totaling $650. Renewal costs $450 every 2 years.
Do HVAC technicians need EPA certification in addition to a California CSLB license?
Yes. Technicians who handle refrigerants must also hold EPA Section 608 certification, which is a federal requirement separate from the California CSLB C-20 contractor license.

Related pages

HVAC Technician in other states
Other licenses in California
Data sourced from official state government portal. Last verified April 2026.
View official source →