North Carolina HVAC license requirements and insurance
To work for yourself as an HVAC contractor in North Carolina, you need the Heating Group No. 3 Contractor, Class I license. North Carolina has 5 HVAC license types, and which one you need depends on the work you take on. The state sets no minimum liability insurance, and workers' comp is required once you have three or more employees on a regular basis. The state does not ask for a bond.
1Who needs a heating and air conditioning license in North Carolina? What is this?
Heating Group No. 3 Contractor, Class I: the usual license for a residential and light commercial HVAC business. Anyone who contracts, bids, or advertises to install or replace a furnace, air handler, heat pump, package unit, ductwork, or condenser in a system of 15 tons or less
| License | Who needs it | What it covers |
|---|---|---|
| Heating Group No. 3 Contractor, Class I | The usual license for a residential and light commercial HVAC business. Anyone who contracts, bids, or advertises to install or replace a furnace, air handler, heat pump, package unit, ductwork, or condenser in a system of 15 tons or less | Heating and cooling systems of 15 tons or less of refrigeration, in any structure, plus all systems in single-family homes. Window units and other plug-in appliances need no license |
| Heating Group No. 3 Contractor, Class II | Same as Group 3 Class I, but for a business that only works on houses | Heating and cooling systems in single-family detached homes only |
| Heating Group No. 2 Contractor (Class I only) | A business that installs or replaces equipment or ductwork in systems over 15 tons, including several units serving one connected space that add up to more than 15 tons | Conditioned-air systems with more than 15 tons of mechanical refrigeration. Class I only, there is no residential Class II |
| Heating Group No. 1 Contractor, Class I or Class II | A business that installs or replaces boilers or steam, vapor, or hot water heating systems | Steam, vapor, and hot water comfort heating and the piping and equipment that go with it. Class II is homes only |
| Heating Group 1, 2, or 3 Technician, Class I and Class II | An employee of a licensed Heating Contractor in the same group who wants to supervise work on site. You cannot contract or pull permits in your own name with this | Class I any structure, Class II single-family homes, always as a full-time employee of a contractor licensed in that group |
2Who issues HVAC contractor licenses in North Carolina? What is this?
North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors (the Board) issues HVAC licenses in North Carolina.
See how this compares in every state: How to check a contractor's license, state by state
| Name | North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors (the Board) |
|---|---|
| Website | nclicensing.org |
| Look up a license | public.nclicensing.org |
| The law | General Statutes chapter 87, Article 2 (G.S. 87-16 to 87-27.1) |
| The rulebook | 21 NCAC chapter 50 |
3How to become an HVAC contractor in North Carolina What is this?
North Carolina has 5 licenses that matter to an HVAC contractor: Heating Group No. 3 Contractor, Class I, Heating Group No. 3 Contractor, Class II, Heating Group No. 2 Contractor (Class I only), Heating Group No. 1 Contractor, Class I or Class II, Heating Group 1, 2, or 3 Technician, Class I and Class II. Each is below, with what you need before you apply.
| License | Experience required | Training required | Exam |
|---|---|---|---|
| Heating Group No. 3 Contractor, Class I | 2 years (4,000 hours) of full-time work installing, maintaining, servicing, or repairing heating or cooling systems. Up to half (2,000 hours) can be school time in a related college or technical program. The Board counts 66.66 hours for each semester hour. Part-time work under 40 hours a week is prorated. | None required. You must own the current NC State Building Code books, the Board's Laws and Rules book, and the NC Business and Project Management for Contractors book before you apply | Yes, a computer exam run by PSI at seven NC test centers, with a business and law part and a technical part. You must test within 90 days of approval and wait 90 days to retake after a fail |
| Heating Group No. 3 Contractor, Class II | Same as Class I, 2 years (4,000 hours), up to half from school | — | Yes, the Class II business and technical exam through PSI. A South Carolina Residential HVAC license can waive the technical part, not the business part |
| Heating Group No. 2 Contractor (Class I only) | 2 years (4,000 hours). A Group 3 Class I licensee gets 50 percent credit toward a Group 2 application, and the other way round | — | Yes, business and law part plus technical part, through PSI |
| Heating Group No. 1 Contractor, Class I or Class II | 2 years (4,000 hours), up to half from school | — | Yes, business and law part plus technical part, through PSI |
| Heating Group 1, 2, or 3 Technician, Class I and Class II | Class I 3,000 hours (18 months). Class II 2,500 hours (15 months). Up to half can be school time | — | Yes, a technical part and a Board laws and rules part. A technician who later has 4,000 hours can get the contractor license by passing only the business part |
4How much does an HVAC license cost in North Carolina? What is this?
The government fees on this page add up to about $300 in North Carolina. Add insurance, tools, and a vehicle to get the real number.
| License | Application | Exam | First license | Renewal | Yearly license fee | Background check | Exam application | Exam application, total | Late renewal penalty | Application without an exam |
|---|---|---|---|---|---|---|---|---|---|---|
| Heating Group No. 3 Contractor, Class I | $75 | $75 | $150 | $150 | — | null | — | $150 | $25 | $30 |
| Heating Group No. 3 Contractor, Class II | $75 | $75 | $150 | $150 | — | — | — | — | — | — |
| Heating Group No. 2 Contractor (Class I only) | $75 | $75 | $150 | $150 | — | — | — | — | — | — |
| Heating Group No. 1 Contractor, Class I or Class II | $75 | $75 | $150 | $150 | — | — | — | — | — | — |
| Heating Group 1, 2, or 3 Technician, Class I and Class II | — | — | — | — | $75 | — | $150 | — | — | — |
Added up
| Government fees, added up | $300 |
|---|
Does not include the CastleBranch background report, the required code books, the EPA 608 test, insurance premiums, tools, a vehicle, or city permits. Pass the exam on or after October 1 and the first license costs $75 for the rest of that year
5How much HVAC insurance do you need in North Carolina? What is this?
North Carolina sets no minimum liability insurance for this license. Customers and general contractors usually ask for $1,000,000 anyway. Workers' comp is required once you have three or more employees on a regular basis.
| Minimum liability insurance | None required by the state |
|---|---|
| Type of policy | None required by the state to hold the license |
| Who this applies to |
|
| Who must be named on the certificate | None |
| Workers' comp required? | Yes, once you have three or more employees on a regular basis |
| Who can opt out | Corporate officers count as employees toward the three but can exclude themselves from the policy in writing. Sole proprietors, partners, and LLC members are not counted and are not covered unless they choose to add themselves |
·4 official pages
- ncrules.state.nc.us/ncac/title%2021%20-%20occupational%20licensing%20boards%20and%20commissions/chapter%2050%20-%20plumbing,%20heating%20and%20fire%20sprinkler%20contractors/chapter%2050%20rules.pdf
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-21/
- ic.nc.gov/wcinsrqmt.html
- ic.nc.gov/workers-compensation-claims/employers
6Does North Carolina check your credit for an HVAC contractor license? What is this?
North Carolina does not check your credit for this license.
| Credit score you need | None |
|---|---|
| If your score is lower | None needed. The application asks for a criminal background report from CastleBranch and proof of your hours (W-2s or 1099s), not a credit check |
7Does an HVAC contractor need a bond in North Carolina? What is this?
North Carolina does not require a state bond for this license. Some cities ask for one before they issue permits.
| Does the state require a bond? | No |
|---|---|
| Amount | Not listed yet |
The state does not ask for one to hold the license. A city or county permit office may, and public jobs use payment bonds under G.S. 44A Article 3
8Federal rules that also apply What is this?
Rules from the US government that apply to an HVAC contractor in North Carolina on top of the state's own.
| EPA refrigerant certification |
|
|---|
9Where must a North Carolina HVAC contractor show the license number? What is this?
In North Carolina: post the license at your place of business. Your license number must appear on every proposal, bid, and contract and on every permit request. The Board's rule adds that the firm's license number and qualification go on contracts, proposals, permit applications, and yellow page ads. A non-binding estimate does not count as a proposal. Do not let your number go on a permit for work you will not do or supervise.
| The rule |
|
|---|---|
| If you forget | The Board treats misuse of the license or number as misconduct and can discipline the license. Contracting or bidding without a license is a Class 2 misdemeanor |
·3 official pages
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-21/
- ncrules.state.nc.us/ncac/title%2021%20-%20occupational%20licensing%20boards%20and%20commissions/chapter%2050%20-%20plumbing,%20heating%20and%20fire%20sprinkler%20contractors/chapter%2050%20rules.pdf
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-25/
10Does an HVAC contractor charge sales tax on labor in North Carolina? What is this?
Whether North Carolina taxes your labor, your materials, or neither.
See how this compares in every state: Can you charge sales tax on labor? The rule in 25 states
| Repairs and service calls |
|
|---|---|
| Replacing a whole system |
|
| Homes versus businesses | No difference. A home and a business are taxed the same way |
| Labor on new buildings | No tax charged to the customer. New construction is a capital improvement. You pay tax on what you buy |
| Materials on work that becomes part of the building | You are the consumer. Pay tax at the supply house and build it into your price. Keep a Form E-589CI (Affidavit of Capital Improvement) on file for each job |
| Materials on taxable repairs | You charge the customer tax on the parts as part of the taxable bill. Whether you can buy those parts tax-free with a resale certificate (Form E-595E) was not confirmed by the state's page |
| Jobs that are part repair, part new work | If the taxable repair part of a capital improvement job is 25 percent or less of the contract price, treat the whole job as a capital improvement. If it is more than 25 percent, charge tax on the repair part |
| Tax rate | 4.75 percent state plus local rates, for a total of 6.75 to 8.25 percent depending on the county |
·5 official pages
- ncdor.gov/taxes-forms/sales-and-use-tax/taxable-items/real-property-contracts/services-real-property-taxability-chart
- ncdor.gov/taxes-forms/sales-and-use-tax/taxable-items/repair-maintenance-and-installation-services-and-other-repair-information
- ncdor.gov/taxes-forms/sales-and-use-tax/real-property-contracts
- codes.findlaw.com/nc/chapter-105-taxation/nc-gen-st-sect-105-164-4h/
- ncdor.gov/taxes-forms/sales-and-use-tax/sales-and-use-tax-rates/current-sales-and-use-tax-rates
11Getting paid: lien and notice deadlines for a North Carolina HVAC contractor What is this?
If you are not paid in North Carolina, a lien on the property is your backstop, but only if your notice goes out on time: within 15 days after your first day of furnishing labor or materials (first day on site March 1 means notice by March 16). Miss it and your lien ranks behind any mortgage recorded before you file, and on some projects you cannot perfect a lien at all. Send it through the lien agent's approved website, certified mail, email, fax, or hand delivery.
- Day 0Your first day on the job
The clock starts here.
- Day 120File your lien
File a Claim of Lien on Real Property with the clerk of superior court in the county where the property is, within 120 days after your last day of furnishing labor or materials (last day April 1 means file by July 30)
Each day count is counted from the day the rule beside it names, which is not always the same day. Read the sentence under each one.
| Who has to send a notice |
|
|---|---|
| Send your notice to the lien agent by |
|
| Notice when you are a subcontractor | If you were hired by the contractor, not the owner, you serve a Notice of Claim of Lien upon Funds on the person who owes your customer money. The statute sets no deadline for it, but nothing is protected until it is served. |
| File your lien by | File a Claim of Lien on Real Property with the clerk of superior court in the county where the property is, within 120 days after your last day of furnishing labor or materials (last day April 1 means file by July 30) |
·5 official pages
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-11-1/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-11-2/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-12/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-19/
- ncleg.gov/EnactedLegislation/Statutes/HTML/ByArticle/Chapter_44A/Article_2.html
12How do you renew an HVAC license in North Carolina? What is this?
The Heating Group No. 3 Contractor, Class I renews every year. No training hours are required.
| License | Renewal | Training hours each year |
|---|---|---|
| Heating Group No. 3 Contractor, Class I | Annual. Every license expires December 31. Renew in January or pay $25 extra. After three years unrenewed you must retest | — |
| Heating Group No. 3 Contractor, Class II | Annual, expires December 31 | — |
| Heating Group No. 2 Contractor (Class I only) | Annual, expires December 31 | — |
| Heating Group No. 1 Contractor, Class I or Class II | Annual, expires December 31 | — |
| Heating Group 1, 2, or 3 Technician, Class I and Class II | Annual, expires December 31 | — |
Renewal fees are in what the license costs. The official page for each license is linked under how you get it.
13What catches people out in North Carolina What is this?
The things people get wrong or do not expect about North Carolina, in a few sentences.
- North Carolina sorts HVAC work into three heating groups by system type, and then into Class I or Class II by building. Group 3 covers systems of 15 tons or less, and any system in a single-family home whatever its size. Group 2 covers systems over 15 tons outside single-family homes, and has no Class II. Boilers and steam or hot water heat are Group 1. No license is needed for minor repairs or minor replacements to a system already installed.
- Replacing a whole central air conditioner, heating unit, or duct system is a capital improvement. You charge the customer no sales tax and pay tax yourself on the equipment. Replacing a coil, blower, condenser coil, control, or a section of duct is a taxable repair, and you charge tax on the whole bill, labor included.
- The Board's competence rule makes a load calculation part of the license. A room-by-room calculation before every new home system, a whole-house block load before every furnace, condenser, or air handler swap, and records kept six years. An undersized or oversized system counts as incompetence.
- Nothing in the licensing law or rules asks an HVAC contractor for liability insurance or a bond. There is no state insurance minimum to meet.
- There is no continuing education to keep the license. No hours, no courses, no renewal training.
- Workers' comp starts at three employees, and corporate officers count toward the three.
·5 official pages
- ncrules.state.nc.us/ncac/title%2021%20-%20occupational%20licensing%20boards%20and%20commissions/chapter%2050%20-%20plumbing,%20heating%20and%20fire%20sprinkler%20contractors/chapter%2050%20rules.pdf
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-21/
- ncdor.gov/taxes-forms/sales-and-use-tax/taxable-items/real-property-contracts/services-real-property-taxability-chart
- nclicensing.org/faq/
- ic.nc.gov/wcinsrqmt.html
14Where these numbers come from
The labels under each table are explained on how to read a page.
- ncrules.state.nc.us/ncac/title%2021%20-%20occupational%20licensing%20boards%20and%20commissions/chapter%2050%20-%20plumbing,%20heating%20and%20fire%20sprinkler%20contractors/chapter%2050%20rules.pdf
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-21/
- ncdor.gov/taxes-forms/sales-and-use-tax/taxable-items/real-property-contracts/services-real-property-taxability-chart
- nclicensing.org/faq/
- ic.nc.gov/wcinsrqmt.html
- nclicensing.org/wp-content/uploads/2026/02/PHFP-Exam-App-2026-01.pdf
- nclicensing.org/wp-content/uploads/2022/11/gs_87-22.pdf
- nclicensing.org/applicant-information/
- nclicensing.org/license-renewal/
- ic.nc.gov/workers-compensation-claims/employers
- epa.gov/section608/section-608-technician-certification
- codes.findlaw.com/nc/chapter-87-contractors/nc-gen-st-sect-87-25/
- ncdor.gov/taxes-forms/sales-and-use-tax/taxable-items/repair-maintenance-and-installation-services-and-other-repair-information
- ncdor.gov/taxes-forms/sales-and-use-tax/real-property-contracts
- codes.findlaw.com/nc/chapter-105-taxation/nc-gen-st-sect-105-164-4h/
- ncdor.gov/taxes-forms/sales-and-use-tax/sales-and-use-tax-rates/current-sales-and-use-tax-rates
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-11-1/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-11-2/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-12/
- codes.findlaw.com/nc/chapter-44a-statutory-liens-and-charges/nc-gen-st-sect-44a-19/
- ncleg.gov/EnactedLegislation/Statutes/HTML/ByArticle/Chapter_44A/Article_2.html