How to become an HVAC technician in California
Licensing details read from the official agency pages on November 11, 2026. Rules and fees change: confirm with the agency before you apply.
1. California licensing: Contractors State License Board (CSLB)
- California licenses the contracting business. The C-20 classification, Warm-Air Heating, Ventilating and Air-Conditioning Contractor, covers fabricating, installing, maintaining, servicing and repairing warm-air heating systems, ventilating systems and air-conditioning systems.
Official sources: CSLB: C-20 classification · CSLB: Get licensed to build.
2. Federal EPA Section 608 certification
In every state, 40 CFR 82.161 requires technicians who could reasonably be expected to violate the integrity of a refrigerant circuit to pass an EPA-approved exam. See our EPA 608 guide.
3. Training: 54 HVAC schools in California
The U.S. Bureau of Labor Statistics says HVAC programs at technical schools and community colleges generally last 6 months to 2 years, and apprenticeships usually last several years with paid on-the-job training (search apprenticeship.gov).
California schools in our directory with the most listed programs:
- Harbor Occupational Center-LAUSD, San Pedro (Certificate, 12 weeks to less than 1 year)
- DeHart Technical School, Modesto (Certificate, 1 to less than 2 years; Certificate, 12 weeks to less than 1 year)
- San Joaquin Valley College-Bakersfield, Bakersfield (Associate's degree; Certificate, 1 to less than 2 years)
- San Joaquin Valley College-Hesperia, Hesperia (Associate's degree; Certificate, 1 to less than 2 years)
- San Joaquin Valley College-Ontario, Ontario (Associate's degree; Certificate, 1 to less than 2 years)
- San Joaquin Valley College-Rancho Mirage, Rancho Mirage (Associate's degree; Certificate, 1 to less than 2 years)
- San Joaquin Valley College-Temecula, Temecula (Associate's degree; Certificate, 1 to less than 2 years)
- San Joaquin Valley College-Trades Education Center, Fresno (Associate's degree; Certificate, 1 to less than 2 years)
See all 54 HVAC schools in California, including published program prices from $1,135 to $26,377.
Frequently asked questions
Do you need a license to be an HVAC technician in California?
Contractors State License Board (CSLB) handles licensing. California licenses the contracting business. The C-20 classification, Warm-Air Heating, Ventilating and Air-Conditioning Contractor, covers fabricating, installing, maintaining, servicing and repairing warm-air heating systems, ventilating systems and air-conditioning systems. Federal EPA Section 608 certification applies in every state to anyone who handles refrigerants.
Where can I go to HVAC school in California?
We list 54 schools in California with HVAC programs, across 43 cities. Browse the full list on our California HVAC schools page.