- California requires a CSLB license when a job totals $1,000 or more, needs a building permit or uses employees.
- At least four years of journey-level, foreman, supervisor or contractor experience in the class within the last ten years. Education or apprenticeship can replace up to three years, but one year must be hands-on.
- Plan for two exams: the trade exam and a business and law exam.
- Pay runs from about $22.57 an hour for the lowest-paid tenth of HVAC technicians to $52.44 for the top tenth.
- Jobs are projected to grow 11.2% from 2022 to 2032, faster than the 5.5% projected nationally.
The path in California, step by step
California licenses HVAC work at the state level through the Contractors State License Board (CSLB). These are the steps it lays out, in order.
- Get four years of journey-level HVAC experience in the last ten years.
- Apply to CSLB for the C-20 exam and pay the $450 application fee.
- Get fingerprinted by Live Scan.
- Pass the law and business exam and the C-20 trade exam.
- File a $25,000 bond and workers' comp proof, and pay the initial license fee.
- Renew every two years.
The full license guide, with every fee and form: HVAC license in California.
Finding an apprenticeship in California
California appears on both of the Labor Department's lists: it has a recognized State Apprenticeship Agency, and the federal Office of Apprenticeship works there too. Apprenticeship.gov lists the California Apprenticeship Office as a contact.
Either way, a registered program means paid work with a mentor, raises as you progress, classroom instruction and a credential recognized in every state. Search open spots in the Apprenticeship Job Finder.
Across the country. Some technicians train through an apprenticeship, which usually lasts several years. Each year mixes paid on-the-job training with some classroom work on safety, blueprint reading, and heating and cooling systems.
License levels and exams in California
The license to aim for: C-20 Warm-Air Heating, Ventilating and Air-Conditioning.
Trade exam. Yes. C-20 trade exam.
Business exam. Yes. Law and business exam.
Keeping it. Every two years when active.
Coming from another state. Several states have reciprocity agreements with California. CSLB lists equivalency determinations for similar Arizona, Louisiana and Nevada classifications.
| License | What it covers |
|---|---|
| C-20 | Warm-air heating, ventilation and air conditioning systems, ducts, controls and heat pump water heaters. |
| C-38 | Refrigeration systems and refrigerated rooms, with their units, ducts and controls, for temperatures below 50 degrees F. |
What the California license costs
The fees the Contractors State License Board (CSLB) lists. Exam fees from a testing company, insurance and any bond come on top.
| Fee | Amount |
|---|---|
| Application fee (one classification) | $450 |
| Initial license fee, sole owner | $200 |
| Initial license fee, non-sole owner | $350 |
| Active renewal, sole owner | $450 |
| Active renewal, non-sole owner | $700 |
What HVAC technicians earn in California
The median HVAC technician in California earned $34.88 an hour in May 2025, 12th of 51 states, with 35,130 on payrolls. The national median was $29.33.
At the bottom of the range, a quarter of HVAC technicians in California earned under $28.02 an hour and a tenth under $22.57. At the top, a quarter earned over $43.65 and a tenth over $52.44.
| Pay level | Hourly | Yearly |
|---|---|---|
| 10th percentile | $22.57 | $46,950 |
| 25th percentile | $28.02 | $58,280 |
| Median | $34.88 | $72,560 |
| 75th percentile | $43.65 | $90,780 |
| 90th percentile | $52.44 | $109,060 |
Every state, the neighbors and what a business should charge: HVAC technician salary in California.
Jobs ahead in California
California's labor market office projects jobs for HVAC technicians growing from 38,400 in 2022 to 42,700 in 2032, a change of 11.2%. Counting people who retire or change careers, that is about 3,790 openings a year.
Jobs are projected to grow 11.2% from 2022 to 2032, faster than the 5.5% projected nationally, ranking 22nd of the 50 states in the file.
These are the state's own long-term projections, published together on Projections Central for the occupation group heating, air conditioning, and refrigeration mechanics and installers.
Starting your own HVAC technician business in California
To contract on your own in California, the license is the C-20 Warm-Air Heating, Ventilating and Air-Conditioning.
Insurance. Workers' comp is required. C-20 contractors cannot claim the workers' comp exemption, even with no employees.
Bond. $25,000 contractor bond.
Pricing comes next. Paying yourself the California median of $34.88 an hour, the labor rate calculator's starting numbers (one person, 2 unbilled hours a day, $90,000 of overhead, 15% profit) come to $131.84 per billable hour. Try your own in the HVAC technician labor rate calculator.
The full checklist is in how to start an HVAC business. The free Koira Office plan gives you a website on a Koira address, estimates customers sign with a deposit, invoices with card payments and your day's jobs in one place, with no per-person fee. See the plans.
Where this comes from
The license steps, fees and rules are from the official pages below, read on the date shown. Pay is the BLS May 2025 state estimate, the job outlook is California's own long-term projection, and the apprenticeship details are from the U.S. Department of Labor. A detail an official page did not confirm is left out.
- CSLB before applying for a license (checked 2026-10-08)
- CSLB experience for the exam (checked 2026-10-08)
- CSLB issuing my license (checked 2026-10-08)
- CSLB fees (checked 2026-10-08)
- CSLB C-20 classification (checked 2026-10-08)
- CSLB C-38 classification (checked 2026-10-08)
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025, SOC 49-9021
- Projections Central, long-term occupational projections 2022 to 2032 (state labor market offices) (checked 2026-10-09)
- U.S. Department of Labor, Apprenticeship System (Office of Apprenticeship and State Apprenticeship Agencies) (checked 2026-10-09)
- U.S. Department of Labor, State Offices (checked 2026-10-09)
- U.S. Department of Labor, Registered Apprenticeship Program (checked 2026-10-09)
- BLS Occupational Outlook Handbook, Heating, Air Conditioning, and Refrigeration Mechanics and Installers (checked 2026-10-09)
Training, schools and certifications for every state: how to become an HVAC technician.