Get a California HVAC Contractor

To get a HVAC contractor license in California (C‑20), you must be 18+, document four years of journeyman/supervisory HVAC experience in the last 10 years, pass Law & Business and C‑20 trade exams, submit fingerprints, post required bonds/insurance, and pay current CSLB fees. Detailed steps and links below.

Requirements last verified: 2026-10-12

Requirement	Details
Licensing agency	California Contractors State License Board (CSLB), Dept. of Consumer Affairs (Applicants portal).
License classification	C‑20 Warm‑Air Heating, Ventilating and Air‑Conditioning Contractor (scope).
Minimum age	18 years old (CSLB).
Experience	Four (4) years journeyman, foreman/supervisor, contractor, or owner‑builder experience in C‑20 within the past 10 years; up to 3 years education/apprenticeship credit allowed (experience credit; Form 13A‑11).
Exams	Law & Business + C‑20 trade exam; scheduled and paid through PSI after eligibility (exam FAQ/PSI; C‑20 study guide). Asbestos Open‑Book required for all qualifiers (13A‑1, p.11).
Application & initial fees	$450 original application; initial license fee $200 (sole owner) or $350 (non‑sole owner). Total due to CSLB for an original sole owner license: $650 (current CSLB fee list; Form 13A‑1, p.14).
Fingerprinting	Live Scan required; DOJ $32 + FBI $17 (+ local rolling fee varies) paid to operator (fingerprint FAQ; fee list).
Bonds	$25,000 Contractor’s Bond (or $25,000 cashier’s check); Bond of Qualifying Individual $25,000 if the qualifier is an RME or an RMO with <10% ownership (LLC/corp exceptions noted by statute) (bond requirements; BPC §7071.9).
Insurance	Workers’ compensation: C‑20 licensees must carry WC insurance even with no employees (WC rules; 13A‑1, p.11). LLCs also need $1M–$5M general liability, scaled by personnel, plus a $100,000 LLC employee/worker bond (13A‑1, p.4 & p.11; LLC info).
Renewal	Every 2 years; Active renewal fee $450 (sole owner) or $700 (non‑sole); delinquent active renewal $675 / $1,050 (CSLB fees). Initial license fee covers the first two‑year term (CSLB FAQ).
When a license is required	License required if project needs a permit, uses employee labor, or totals $1,000+; the small‑job exemption applies only if no permit and no employees (CSLB).

How to get a HVAC contractor license in California (C‑20)

1. Confirm you qualify. Be 18+ and verify four years of recent, journeyman‑level HVAC experience (or combination with education/apprenticeship). Use CSLB’s Certification of Work Experience (13A‑11). (Experience rules)
2. Apply to CSLB. Submit the Application for Original Contractor License (13A‑1) and pay the $450 application fee. (CSLB fees)
3. Schedule exams with PSI. After CSLB posts your application, you’ll get a Notice to Schedule. Book and pay for the Law & Business and C‑20 trade exams via PSI. (Exam FAQ; C‑20 guide)
4. Complete fingerprinting. Follow CSLB’s Live Scan instructions; pay DOJ $32, FBI $17, plus local rolling fees. (Fingerprint FAQ; fee list)
5. Satisfy bond and insurance. Arrange the $25,000 license bond; if applicable, a $25,000 Qualifying Individual bond. File workers’ comp (mandatory for all C‑20s, even without employees). LLCs must also carry $1M–$5M liability and a $100,000 LLC worker bond. (Bonds; WC; LLC)
6. Pay the initial license fee. After passing exams, submit $200 (sole owner) or $350 (non‑sole) initial fee for the first two‑year license term. (CSLB fees)
7. Maintain your license. Renew every two years and keep bonds and insurance current. Use CSLB’s Processing Times page to track steps. (Renewal info)

California C‑20 HVAC contractor license: exams and forms

You’ll take two computer‑based exams: Law & Business and the C‑20 trade. PSI administers scheduling and exam fees once CSLB deems you eligible (exam FAQ). CSLB’s official C‑20 Study Guide outlines topic areas and reference materials. Apply with Form 13A‑1 and document experience on Form 13A‑11.

Fees to get and keep your California HVAC license

Plan for the CSLB application ($450) and initial license fee ($200 sole owner / $350 non‑sole), Live Scan processing (DOJ $32 + FBI $17 + rolling fee), plus surety bond and insurance costs. See the official CSLB fee list. For a deeper cost breakdown specific to HVAC, review our guide on typical HVAC license costs in California.

Insurance and bonds for California C‑20 HVAC contractors

CSLB requires a $25,000 contractor’s bond, and in some cases a $25,000 Bond of Qualifying Individual (e.g., RME or RMO with <10% ownership) (CSLB bonds; BPC §7071.9). C‑20 licensees must maintain workers’ compensation even with no employees (WC rules). LLCs must also carry $1M–$5M liability insurance and a $100,000 LLC employee/worker bond (13A‑1, p.4, p.11; LLC).

When a California contractor license is legally required

In California, a CSLB license is required when the job requires a building permit, uses employee labor, or totals $1,000 or more in combined labor and materials. The small‑job exemption applies only if there is no permit and no employees (CSLB guidance).

Renewing your C‑20 HVAC contractor license

Licenses renew every two years. Current active renewal fees are $450 (sole owner) and $700 (non‑sole), with delinquent active renewals at $675 and $1,050 respectively. Keep bonds, workers’ comp (for C‑20), and (for LLCs) liability coverage current to avoid lapses (CSLB fees; renewal info).

Related California trade licensing guidance

If you’re still deciding between HVAC and other specialties, compare scope and steps in our California trades contractor license guide. When budgeting, our dedicated analysis of HVAC license costs in California can help you plan fees, bonding, and insurance.

Frequently Asked Questions

What forms do I file to start my California C‑20 license?

File CSLB’s Application for Original Contractor License (Form 13A‑1) and include the Certification of Work Experience (Form 13A‑11). After acceptance, you’ll schedule exams with PSI, complete fingerprinting, then submit bonds/insurance and the initial license fee (13A‑1; 13A‑11; exam FAQ).

How many hours or years of HVAC experience are required?

CSLB requires four years of journeyman, foreman/supervisor, contractor, or owner‑builder experience in C‑20 within the past 10 years. Up to three years of education or apprenticeship can count toward the four‑year requirement, subject to CSLB review (experience credit rules).

What insurance and bonds must a C‑20 contractor maintain?

A $25,000 contractor’s bond is mandatory; some licenses also need a $25,000 Qualifying Individual bond. All C‑20 contractors must carry workers’ compensation, even with no employees. LLCs must additionally hold $1M–$5M liability insurance and a $100,000 LLC worker bond (bonds; WC; LLC).

What are the current CSLB fees for a new C‑20 license?

$450 application fee, plus $200 (sole owner) or $350 (non‑sole owner) initial license fee after passing exams; Live Scan DOJ $32 and FBI $17 (rolling fee varies). Renewal is every two years: $450/$700 active timely for sole/non‑sole (CSLB fee schedule).

Who administers the C‑20 trade and Law & Business exams?

PSI administers both exams. After CSLB posts your application, you’ll receive a Notice to Schedule and then book directly with PSI. CSLB provides free study guides, including the C‑20 trade guide (exam FAQ; C‑20 study guide).

Ready to move from research to licensure? License Navigator can walk you through each CSLB form, exam milestone, and compliance box so you earn and maintain your California C‑20 license with confidence.