StateLicensed

HVAC Technician License Requirements in California

Verified · July 2026
Training hours
—
Upfront cost
$752
Exam
C-20 Trade Examination, Law & Business Examination
Renewal cycle
Every 2 years
Issuing board
California Contractors State License Board (CSLB)

How to get licensed

  1. 1

    Meet the prerequisites

    Pass a criminal background check. All applicants, plus each officer, partner, owner, and Responsible Managing Employee, must submit a full set of fingerprints via Live Scan for a California DOJ and FBI criminal-history background check (fees of roughly $32 DOJ + $17 FBI plus a Live Scan site fee apply). No specific statewide minimum age figure for a C-20 license was found in CSLB's public FAQ; standard California legal adulthood (18) generally applies to acting as a business owner/qualifier. [4]

  2. 2

    Complete approved training

    Complete the required training. California does not license individual HVAC technicians; the CSLB licenses HVAC/refrigeration CONTRACTORS (C-20 for warm-air heating, ventilating, and air conditioning; a related C-38 covers refrigeration). An individual works for a licensed contractor until qualifying as the license's qualifying individual (owner or Responsible Managing Employee/Officer). The qualifying individual must document at least 4 years of full-time journey-level (or higher) experience in the classification within the last 10 years; up to 3 of the 4 years may be substituted with technical training, a registered apprenticeship, or a related degree. No fixed classroom-hour figure is published since the pathway is experience-based with a training-substitution cap. As of January 1, 2025, CSLB also requires proof of EPA Section 608 Certification (Type II or Universal) for C-20 and C-38 applicants. [1]

  3. 3

    C-20 Trade Examination

    Pass the C-20 Trade Examination (fee: $51). Multiple-choice, approximately 3.5 hours combined with the Law & Business exam Applicants must also pass the separate CSLB Law & Business exam and a mandatory open-book Asbestos exam. Both the trade and Law & Business exams are $51.43 each ($102.86 total), paid directly to PSI; applicants have 18 months after CSLB accepts the application to pass all required exams. [2]

  4. 4

    Law & Business Examination

    Pass the Law & Business Examination (fee: $51). Multiple-choice; covers California contracting law, safety, and business management Required of nearly all new applicants in addition to the trade-specific exam. [2]

  5. 5

    Submit your application

    Submit your application to California Contractors State License Board (CSLB) with the $450 application fee. [3]

  6. 6

    Receive your license

    Once your application is approved, California Contractors State License Board (CSLB) issues your C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor License for California.

Fees

Fee Amount
Application fee [3] $450
License fee [3] $200
Renewal fee [3] $450
C-20 Trade Examination [2] $51
Law & Business Examination [2] $51
Initial license fee (non-sole owner) [3] $350
Renewal fee, active timely (non-sole owner) [3] $700
Bond of Qualifying Individual (if RME/minority-owner RMO) [3] $25,000

Per CSLB's published fee schedule: $450 nonrefundable original-application fee (exam or waiver, one classification); initial license fee is $200 for a sole owner or $350 for a non-sole owner (business entity); active timely renewal is $450 for a sole owner or $700 for a non-sole owner, on a 2-year cycle. A separate contractor's bond (amount varies) and, in some ownership structures, a $25,000 bond of qualifying individual are also required but are not fees paid to CSLB.

Renewal & continuing education

Renew every 2 years.

CSLB contractor licenses renew every 2 years. California does not require continuing education hours for general contractor license renewal (unlike some individual trade licenses in other states).

Reciprocity

Endorsement/reciprocity from another state is available.

CSLB has formal reciprocity agreements with Arizona, Louisiana, Mississippi, Nevada, and North Carolina for classifications where scopes of practice are identical or fundamentally indistinguishable (Business & Professions Code 7065.4). A qualifying applicant with an active, good-standing out-of-state license may have the trade exam waived, but must still pass the Law & Business exam.

36 state-approved training providers in California — browse programs and compare schools on tradecolleges.org.

Cost calculator

  • $450
  • $200
  • $51
  • $51
Total$752

Frequently asked questions

Does California license individual HVAC technicians?

No. The CSLB licenses HVAC CONTRACTORS through the C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) classification. Individuals work for a licensed contractor until they qualify as the license's qualifying individual.

How much experience do I need for a C-20 license?

At least 4 years of full-time journey-level (or higher) experience in the classification within the last 10 years; up to 3 years may be substituted with technical training, a registered apprenticeship, or a related degree.

What exams does California require for a C-20 license?

A C-20 trade exam and a separate Law & Business exam, both administered by PSI, plus a mandatory open-book Asbestos exam. As of January 1, 2025, EPA Section 608 Certification is also required.

How often does a C-20 license renew and is continuing education required?

Every 2 years. California does not require continuing education hours for general contractor license renewal.

Can I transfer an out-of-state contractor license to California?

CSLB has reciprocity agreements with Arizona, Louisiana, Mississippi, Nevada, and North Carolina that can waive the trade exam for qualifying applicants, though the Law & Business exam is still required.

Sources

  1. [1] cslb.ca.gov/About_Us/Public_Info_FAQ.aspx — accessed 2026-07-12
  2. [2] psiexams.com/test-takers/cslb/ — accessed 2026-07-12
  3. [3] cslb.ca.gov/about_us/library/fees.aspx — accessed 2026-07-12
  4. [4] cslb.ca.gov/about_Us/faqs/fingerprint_q_and_a.aspx — accessed 2026-07-12
  5. [5] cslb.ca.gov/Contractors/Applicants/Reciprocity/General_Reciprocity_Information.aspx — accessed 2026-07-12