North Carolina has a two-board licensing structure: one board for heating/AC contractors and another for refrigeration contractors. This means HVAC/R contractors may need two separate licenses for different types of work.
4,000 hours of relevant HVAC work under a licensed contractor's supervision. Up to 2,000 hours may be substituted by academic or technical training. Class I refrigeration: 3,000 hours; Class II: 2,500 hours.
Yes — separate exams for heating and refrigeration tracks. 70% passing score on each part.
None required for renewal
Limited — NC has a Technical Examination Waiver Agreement with South Carolina (trade exam waived, NC business law exam still required). No broad reciprocity with other states.
Reciprocity agreements can change. Always verify current status directly with NC State Board of Examiners of Plumbing, Heating, and Fire Sprinkler Contractors before relying on reciprocity for licensure.
North Carolina's two-board system for heating vs. refrigeration is one of the more complex structures nationally. A contractor doing both HVAC and commercial refrigeration may need licenses from both boards.
EPA 608 Certification — Required in All 50 States
Regardless of North Carolina's state licensing rules, any technician who purchases, handles, or works with regulated refrigerants must hold EPA Section 608 certification. This is a federal requirement under the Clean Air Act that no state law can waive. EPA 608 Universal (covering Type I, II, and III) is the most versatile credential for most HVAC roles.
Browse EPA 608 Universal jobs in North CarolinaNorth Carolina administers separate exams for heating/AC contractors (through the NC State Board of Examiners of Plumbing, Heating, and Fire Sprinkler Contractors) and refrigeration contractors (through the NC State Board of Refrigeration Contractors). Both require a 70% passing score. The heating contractor exam tests the NC Mechanical Code, load calculations, and business practices; the refrigeration exam focuses on commercial refrigeration systems and NC refrigeration-specific regulations.
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Last verified: 2026 · Always confirm current requirements with your state licensing board before starting work or submitting an application.
NC State Board of Examiners of Plumbing, Heating, and Fire Sprinkler Contractors (heating/AC); NC State Board of Refrigeration Contractors (refrigeration)
Visit official board website