Cal. Code Regs. tit. 16 § 832.20
A warm-air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air-conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems. This classification shall include warm-air heating, ventilating and air-conditioning systems which utilize solar energy,
Cal. Code Regs. Tit. 16, § 832.20
Note: Authority cited: Sections 7008 and 7059, Business and Professions Code. Reference: Sections 7026.1, 7058 and 7059, Business and Professions Code.