To obtain an HVAC license, one must complete accredited training, gain work experience through an apprenticeship, and pass licensing exams. Requirements vary by state but often include training programs, apprenticeships lasting 3-5 years, and exams that test knowledge of HVAC systems, safety, and regulations. HVAC technician licenses ensure technicians have the skills to do their job properly, while contractor licenses allow one to legally operate an HVAC business. Certification is also recommended as it demonstrates expertise and can lead to higher pay and career advancement. Proper licensing and training are necessary for safely working with HVAC equipment.