HVAC contractor license requirements in North Carolina.
North Carolina licenses heating and cooling contractors through the same board that handles plumbing — the State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors. Heating licenses are split into groups by the kind of system, and each group is issued as Class I (unlimited) or Class II (limited).
What North Carolina requires.
Heating Group 1 (H-1)
Hydronic — “wet” or water-based comfort heating systems, including boilers and steam.
Heating Group 2 (H-2)
Forced-air heating and cooling systems, the larger-capacity group (the board’s definitions use a 15-ton cooling threshold to separate H-2 from H-3).
Heating Group 3 (H-3)
Forced-air heating and cooling at the limited end of the scale — the board’s License Definitions document is the authority on the exact scope.
Class I and Class II
Each heating group is issued as Class I (unlimited) or Class II (limited). The classes carry different scope, exam, financial, and insurance requirements.
Getting the Heating Group 1
- Two years (4,000 hours) of on-site, full-time experience installing, maintaining, servicing, or repairing systems in the category you are applying for
- Up to half of that (2,000 hours) can be academic or technical training directly related to the field — the board equates this to 45 quarter hours or 30 semester hours
- Pass the examination for the specific heating group and class you want
- · Published descriptions of the H-2 / H-3 split vary between sources. Confirm the exact tonnage and building-type scope against the board’s own License Definitions document before you apply.
- · Because one board covers plumbing, heating, and fire sprinkler work, contractors doing more than one trade apply through the same place.
The official board
North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors
N.C. Gen. Stat. Chapter 87, Article 2
(919) 875-3612
Visit the boardVerified 2026-08 against the sources below. Licensing rules change — confirm with the board before relying on this page.
North Carolina HVAC licensing FAQ.
Do you need a license to do HVAC work in North Carolina?
Yes. North Carolina requires a heating contractor license from the State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors, issued under N.C. Gen. Stat. Chapter 87, Article 2. You need the license for the heating group and class that matches your work.
What are the H-1, H-2, and H-3 heating licenses in North Carolina?
They are the board’s heating groups. H-1 covers hydronic, water-based comfort heating like boilers and steam. H-2 and H-3 cover forced-air heating and cooling, separated by system capacity and building scope — the board uses a 15-ton cooling threshold in its definitions. Check the board’s License Definitions document for the exact boundaries.
How much experience do you need for a North Carolina heating license?
Two years — 4,000 hours — of on-site full-time experience in the category you are applying for. Up to 2,000 of those hours can come from directly related academic or technical training, which the board equates to 45 quarter hours or 30 semester hours.
What is the difference between Class I and Class II heating licenses in North Carolina?
Class I is the unlimited classification and Class II is limited. Each carries its own scope of work, examination, financial thresholds, and insurance obligations, so the class you hold determines the projects you can take.
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