1. California issues a C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor classification for HVAC work. (Source: https://www.cslb.ca.gov/About_Us/Library/Licensing_Classifications/Licensing_Classifications_Detail.aspx?Class=C20; verbatim: “A warm-air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems”)
2. CSLB applicants must demonstrate required knowledge and experience for the specific license classification they are applying for. (Source: https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=7068.; verbatim: “The board shall require an applicant to show the degree of knowledge and experience in the classification applied for”)