10.1 NC State Board of Refrigeration Contractors Statutes & Licensure

Key Takeaways

  • Commercial and process refrigeration contracting in North Carolina is governed independently by the State Board of Refrigeration Contractors under NCGS Chapter 87, Article 5 and Title 21, Chapter 60 of the North Carolina Administrative Code (21 NCAC 60).
  • Under NCGS § 87-52 the Board consists of seven Governor-appointed members serving seven-year staggered terms: a refrigeration equipment wholesaler or manufacturer, a member from an accredited NC engineering school, a public-health member with an environmental science background, two licensed refrigeration contractors, a member with an engineering background in refrigeration, and one member with no ties to the construction industry.
  • NCGS § 87-58(b) establishes exactly four licenses: Class I for commercial refrigeration contracting, Class II for industrial refrigeration contracting (refrigeration using ammonia as the refrigerant gas), Class III for refrigeration service contracting, and Class IV for transport refrigeration contracting.
  • 21 NCAC 60 .0207 requires 4,000 hours of refrigeration experience relevant to the classification sought, up to one-half of which may be technical training, and 21 NCAC 60 .0311 requires that general supervision include in-person review of the work by the licensee while the work is in progress.
  • Executing or offering to execute commercial refrigeration work without an active license is a Class 3 misdemeanor under NCGS § 87-61 — a different class from the Class 2 misdemeanor that Article 2 imposes on unlicensed heating contracting — and it forfeits contract-recovery and lien rights.
Last updated: August 2026

NC State Board of Refrigeration Contractors Statutes & Licensure

Statutory Basis: In North Carolina, commercial, industrial, and process refrigeration systems are regulated under North Carolina General Statutes (NCGS) Chapter 87, Article 5 and Title 21, Chapter 60 of the North Carolina Administrative Code (21 NCAC 60) by the State Board of Refrigeration Contractors (renamed from the State Board of Refrigeration Examiners by S.L. 2017-10, s. 2.7(a); older references and forms still use the former name). Comfort heating and air conditioning are governed separately under NCGS Chapter 87, Article 2 by the Plumbing and Heating Board.


Statutory Framework & Legislative Authority (NCGS Chapter 87, Article 5)

North Carolina is one of the few states in the nation that maintains an independent, autonomous state licensing board specifically dedicated to commercial and industrial refrigeration. The General Assembly established this regulatory structure to safeguard public health, prevent food spoilage hazards, ensure thermodynamic pressure safety, and regulate toxic and flammable refrigerant handling.

North Carolina Construction Licensing Division
├── NCGS Chapter 87, Article 1: Licensing Board for General Contractors
├── NCGS Chapter 87, Article 2: State Board of Examiners of Plumbing, Heating & Fire Sprinkler Contractors
├── NCGS Chapter 87, Article 4: State Board of Examiners of Electrical Contractors
└── NCGS Chapter 87, Article 5: State Board of Refrigeration Contractors (21 NCAC 60)

Composition of the Board (NCGS § 87-52)

The State Board of Refrigeration Contractors consists of seven members appointed by the Governor of North Carolina, serving staggered seven-year terms:

  1. One member who is a licensed commercial refrigeration contractor.
  2. One member representing commercial refrigeration equipment manufacturers or wholesalers.
  3. One member who is a licensed professional engineer (mechanical discipline).
  4. One member who is a licensed refrigeration contractor specializing in service and maintenance.
  5. One member representing the meat packing, food processing, or cold storage preservation industry.
  6. One member representing the dairy, supermarket, or agricultural processing industry.
  7. One public member who has no commercial ties to the refrigeration or construction contracting industry.

Primary Board Powers & Duties (NCGS § 87-54 & § 87-57)

  • Examination & Licensing: Formulating, administering, and grading trade examination syllabi for refrigeration applicants.
  • Administrative Rulemaking: Adopting rules under 21 NCAC 60 governing examination eligibility (.0207), fees (.0209), examination structure and scoring (.0213), permits and supervision (.0311), and use of license (.0314).
  • Investigation & Enforcement: Investigating consumer and contractor complaints regarding unlicensed practice, code non-compliance, and defective workmanship.
  • Disciplinary Sanctions: Issuing formal letters of reprimand, placing licensees on probation, suspending or revoking credentials, and levying administrative penalties.
  • Judicial Action: Initiating civil injunctive proceedings through the North Carolina Attorney General and Superior Courts to halt unlicensed operations.

Jurisdictional Boundaries: Refrigeration vs. Comfort Conditioning

A critical legal concept tested on North Carolina trade examinations is the exact jurisdictional division between the Plumbing, Heating & Fire Sprinkler Board (21 NCAC 50) and the Refrigeration Board (21 NCAC 60).

Mechanical Installation / Equipment TypeGoverning BoardGoverning Statute & RuleRequired License Classification
Walk-in Freezers & Cold Storage RoomsState Board of Refrigeration ContractorsNCGS 87 Art. 5 / 21 NCAC 60Commercial Refrigeration License
Supermarket Multiplex Compressor RacksState Board of Refrigeration ContractorsNCGS 87 Art. 5 / 21 NCAC 60Commercial Refrigeration License
Industrial Process Chillers (Beverage / Chemical)State Board of Refrigeration ContractorsNCGS 87 Art. 5 / 21 NCAC 60Commercial / Industrial Refrigeration
Commercial Ice-Making Plants & FlakersState Board of Refrigeration ContractorsNCGS 87 Art. 5 / 21 NCAC 60Commercial Refrigeration License
Comfort Air Conditioning Split Systems & Heat PumpsPlumbing, Heating & Fire Sprinkler BoardNCGS 87 Art. 2 / 21 NCAC 50Heating Group 3 (H3) or Group 2 (H2)
Commercial Rooftop Units (RTUs) for Human OccupancyPlumbing, Heating & Fire Sprinkler BoardNCGS 87 Art. 2 / 21 NCAC 50Heating Group 2 (> 15 Tons) or H3 (≤ 15 Tons)
Comfort Chilled Water Central Air HandlersPlumbing, Heating & Fire Sprinkler BoardNCGS 87 Art. 2 / 21 NCAC 50Heating Group 1 (Hydronics) or Group 2
Air Distribution Ductwork for Human ComfortPlumbing, Heating & Fire Sprinkler BoardNCGS 87 Art. 2 / 21 NCAC 50Heating Group 2 or Heating Group 3
+-----------------------------------------------------------------------------------+
|                         CROSS-JURISDICTIONAL RULES                                |
+-----------------------------------------------------------------------------------+
| 1. Dual-License Requirement: Mechanical contractors bidding on comprehensive      |
|    supermarket projects involving both store comfort conditioning (RTUs/ductwork) |
|    and food preservation equipment (multiplex racks/cases) must hold credentials  |
|    from BOTH the Heating Board (H2/H3) and the Refrigeration Board.               |
| 2. Self-Contained Reach-In Exception: Plug-in factory-assembled commercial        |
|    refrigerators (120V cord-and-plug connected with no field refrigerant piping)   |
|    do not require a licensed refrigeration contractor for delivery and placement. |
| 3. Remote Condensing Units: Any system requiring field refrigerant piping,        |
|    evacuation, brazing, or charging falls strictly under 21 NCAC 60 jurisdiction. |
+-----------------------------------------------------------------------------------+

License Classifications & Scopes (21 NCAC 60)

NCGS § 87-58(a) and (b) define the trade and then create four — and only four — license classes. Memorize the class numbers; they are a standing exam item:

ClassStatutory Definition (G.S. 87-58(a))Typical Work
Class ICommercial refrigeration contractor — installation, maintenance, servicing and repairing of refrigerating machinery, equipment, devices and componentsSupermarket racks, walk-ins, cold storage, process chillers
Class IIIndustrial refrigeration contractor — commercial refrigeration contracting with the use of ammonia as a refrigerant gasAmmonia (R-717) plants, blast freezers, packing houses
Class IIIRefrigeration service contractor — maintenance, servicing, and repairing onlyService-only companies, no new installation
Class IVTransport refrigeration contractor — installation, maintenance, repairing, and servicing of transport refrigerationReefer trailers, intermodal containers, rail cars

Article 5 does not apply to: installation of self-contained commercial refrigeration units with an OEM molded plug that does not require opening service valves; installation and servicing of domestic self-contained refrigeration appliances with an OEM molded plug; employees of firms that install, maintain and service their own refrigeration equipment; anyone selling, repairing, or installing comfort cooling devices or systems; and replacement of lamps, fuses, and door gaskets.

1. Class I — Commercial Refrigeration Contractor

  • Authorized Scope: Authorizes the holder to design, install, repair, alter, service, and maintain all types of field-erected and packaged commercial and industrial refrigeration systems.
  • Covered Applications: Walk-in coolers, blast freezers, cold storage distribution centers, parallel compressor racks, dairy coolers, process chillers, environmental test chambers, and industrial liquid cooling.
  • Refrigerant Handling: Covers all ASHRAE standard refrigerants, including halocarbons (CFCs, HCFCs, HFCs, HFOs), carbon dioxide ($CO_2$, R-744), and ammonia ($NH_3$, R-717) when complying with ASME/IIAR standards.

2. Class IV — Transport Refrigeration Contractor

  • Authorized Scope: Restricts work exclusively to mobile refrigeration systems installed on commercial transport trucks, refrigerated semi-trailers (reefers), intermodal shipping containers, and rail cars.
  • Stationary Limitation: Does not authorize the installation or servicing of stationary commercial building walk-ins or fixed cold storage equipment.

3. Class III — Refrigeration Service Contractor

  • Authorized Scope: Maintenance, servicing, and repairing of refrigerating machinery, equipment, devices and components — diagnosis, component replacement, leak repair, and routine maintenance of existing systems, without new installation work.

4. Class II — Industrial Refrigeration Contractor

  • Authorized Scope: Commercial refrigeration contracting performed with ammonia as the refrigerant gas. The ammonia trigger, not the size of the plant, is what moves a job from Class I to Class II.
  • Cross-Licensing: Under 21 NCAC 60 .0207(d), an applicant may hold more than one classification by meeting the qualifications and passing the examination for each; a holder of a valid transport or service license is eligible to sit for the commercial examination on filing a new application.

Examination Prerequisites & Qualifying Party Standards

1. Trade Experience & Application Requirements (21 NCAC 60 .0207)

  • Field Experience Hours: Applicants must obtain 4,000 hours of refrigeration experience relevant to the classification of licensure desired prior to filing the application.
  • Training Substitution: Up to one-half of the experience may be in technical training related to the field of refrigeration contracting — the rule states a single 50% cap and publishes no credential-by-credential table.
  • Application Contents: Social Security number, contact information, the business name the licensee will operate under, the classification desired, disciplinary history with any other licensing board, a record of refrigeration experience and education, and a supervisor's statement verifying experience, filed with the non-refundable examination fee.
  • Certificate: Applicants who pass receive a certificate bearing their license number; the license may not be assigned or transferred to another individual.

1a. Fees & Examination Structure (21 NCAC 60 .0209 and .0213)

ItemAmount / Rule
Examination application$100.00 (G.S. 87-64(a) caps it at $100)
License renewal$80.00 annually (statutory cap)
License reinstatement$120.00 (statutory late-renewal cap is $160)
Commercial & Industrial examDivided into four parts
Service & Transport examDivided into three parts
Passing standard70 percent on each part
Carry-over windowAll parts must be passed within the same one-year period and within no more than three consecutive attempts; otherwise all passing part grades expire and the entire exam must be retaken
Re-test waitFive business days from the date the applicant last failed
No-showCounts toward the three attempts unless notice is given five business days in advance
Answer reviewThe applicant may review incorrect answers immediately following the examination (21 NCAC 60 .0208)
LapseFailure to renew for two consecutive years requires retaking and passing the examination (G.S. 87-64(c))

2. Qualifier Responsibilities & General Supervision (21 NCAC 60 .0311)

2. Qualifier Responsibilities & Direct Supervision (21 NCAC 60 .0300)

In North Carolina, the license is granted to the individual licensee, whose credential allows a business entity (sole proprietorship, partnership, LLC, or corporation) to contract under G.S. 87-62: a corporation or partnership may engage in refrigeration contracting if one or more connected persons is licensed, the licensed person executes all contracts, exercises general supervision over the work, and is responsible for compliance with the Article. The licensee's connection to the entity must be evidenced by a written contract executed before the entity engages in refrigeration contracting.

  • General Supervision Defined (21 NCAC 60 .0311(c)(1)): "That degree of supervision which is necessary and sufficient to ensure that the work is performed in a competent manner and with the requisite skill and that the work is done timely, safely and in accordance with applicable codes and rules. General supervision requires that the review of the work be performed in person by the licensee while the work is in progress." The rule sets no weekly hour quota — answer choices citing 30 hours per week are distractors.
  • Local, Active Supervision (21 NCAC 60 .0311(c)(2)): Each business office for which a licensee is responsible must be actively and locally supervised by that licensee, who must have primary responsibility and a corresponding amount of time personally involved in the work contracted for or performed by that office. Under G.S. 87-62(a) the Board may determine the number of businesses, and their proximity to each other, over which one licensee may be responsible.
  • Prohibition on License Lending (21 NCAC 60 .0314(a)): "The licensed contractor shall not permit the use of his license by any other person." All refrigeration contracting business, including advertising and the submission of documents, must be conducted in the exact name in which the license is issued (.0314(b)).

3. Departure or Separation of the Licensee (21 NCAC 60 .0314(c))

When a licensee terminates the relationship with the company in which the license is issued, work begun prior to termination may be completed only under such conditions as the Board directs, weighing the percentage of the project completed, the time before another licensee can be employed, project size and complexity, the qualifications of remaining personnel, prior disciplinary record, financial accountability, and other occupational licenses held.

Licensee Separation Protocol (21 NCAC 60 .0314(c))
├── Step 1: Licensee terminates the relationship with the company.
├── Step 2: Work already begun may be completed ONLY on conditions the Board directs
│          (seven enumerated factors, decided case by case).
└── Step 3: NO new work requiring a license under G.S. 87-58 may be bid for,
           contracted for, or initiated until the company obtains a license.
     (Separately, 21 NCAC 60 .0316 requires written notice to the Board within
      30 days of any change of address or business location.)

Permitting, Code Compliance & Business Identification

1. Mandatory Permitting & the 10-Day Inspection Rule (21 NCAC 60 .0311)

  • (a) The refrigeration license number of the licensee shall appear on all applications for permits.
  • (b) A licensee shall assure that a permit is obtained from the local Building Code enforcement official before commencing any installation work for which a license is required, and shall assure that a request for final inspection is made within 10 days of subsequent completion of the work, absent agreement with the owner and the local Building Code enforcement official. The rule contains no emergency or after-hours exception.
  • (c) A licensee shall obtain permits, and allow the license number to appear on permits, only for work over which the licensee will provide general supervision to completion, for which the licensee holds the contract, and for which the licensee receives all contractual payments.

2. Business Identification (21 NCAC 60 .0314 and .0312)

  • Exact-Name Rule: All refrigeration contracting business — including all business advertising and the submission of all documents and papers — must be conducted in the exact name in which the license is issued.
  • Trade Name Changes: A trade name may be changed only on request to and approval by the Board, and the last license issued must be returned to the Executive Director with the Board's form (.0312).
  • No Vehicle-Lettering Rule: 21 NCAC 60 contains no service-vehicle lettering or lettering-height requirement. Any answer choice specifying inches of lettering on a truck is a distractor.
  • Address Changes: Written notice to the Board within 30 days of any change of address or business location (.0316).

3. Annual License Renewal (G.S. 87-64 and 21 NCAC 60 .0304)

  • Renewal Cycle: Renewal/reinstatement notices are mailed on or about October 31 each year. On or before January 1, every licensee wishing to continue must forward the $80.00 non-refundable renewal fee with the renewal application.
  • Lapse Sequence (21 NCAC 60 .0304): on or about January 15 each licensee who has not renewed is notified that the license has lapsed and instructed to apply for reinstatement; on or about February 1, those who have not replied are sent a certified letter notifying them that the license has lapsed and that further refrigeration contracting is unlawful.
  • Reinstatement: $120.00 reinstatement fee (statutory cap $160). Failure to renew for two consecutive years requires taking and passing the examination prescribed for new applicants (G.S. 87-64(c)).
  • Continuing Education: G.S. 87-64(b) permits this Board to require continuing education as a prerequisite to renewal, but 21 NCAC 60 sets no CE hour requirement — the .0400 rule series governs Board personnel, not education.

Disciplinary Grounds, Sanctions & Legal Penalties (NCGS § 87-59 & § 87-61)

+-----------------------------------------------------------------------------------+
|                         STATUTORY GROUNDS FOR DISCIPLINE                          |
+-----------------------------------------------------------------------------------+
| 1. Gross Negligence or Incompetence: Installing pressurized refrigeration piping  |
|    in violation of ASHRAE 15 / NC Mechanical Code, creating explosion/toxic risk. |
| 2. Unpermitted Contracting: Performing field installations without local permits. |
| 3. License Lending / Aiding Unlicensed Persons: Allowing non-licensees to use      |
|    the contractor's license number to pull permits or bid projects.               |
| 4. Contract Abandonment & Fraud: Misrepresenting equipment ratings or abandoning  |
|    commercial walk-in/rack projects after receiving financial deposits.            |
+-----------------------------------------------------------------------------------+

Hierarchy of Board Sanctions

  1. Letter of Reprimand: Official administrative censure recorded in the public registry.
  2. Probationary Period: Supervised conditional practice (1 to 3 years) requiring periodic job reporting and random Board field audits.
  3. License Suspension: Temporary prohibition of all contracting and bidding activities for a specified term.
  4. License Revocation: Complete termination of contracting credentials with a statutory waiting period (typically 1 to 3 years) before reapplication eligibility.

Criminal & Civil Penalties for Unlicensed Contracting

  • Class 3 Misdemeanor: Under NCGS § 87-61, any individual or enterprise that engages in, offers to engage in, or carries on refrigeration contracting without a license — or that practices a type of refrigeration contracting not authorized by the class of license held, gives false or forged evidence to the Board, or uses an expired or revoked license — is guilty of a Class 3 misdemeanor. Contrast this with the Class 2 misdemeanor imposed by NCGS § 87-25 on unlicensed heating contracting; NCGS § 87-59 is the Board's administrative discipline statute, and under § 87-59(d) the Board may accept an offer to compromise a charge for a penalty not to exceed $1,000, remitted to the Civil Penalty and Forfeiture Fund.
  • Superior Court Injunctions: The Board is statutorily authorized to petition the North Carolina Superior Court for immediate ex parte injunctions to halt unpermitted construction.
  • Unenforceability of Contracts & Lien Forfeiture: Established North Carolina judicial precedent (Brady v. Fulghum) dictates that an unlicensed contractor cannot enforce contracts in court, cannot recover payment under quantum meruit, and forfeits all mechanics' and materialmen's lien rights under NCGS Chapter 44A.
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North Carolina Commercial Refrigeration Regulatory Hierarchy & Governance
Test Your Knowledge

A mechanical contractor in North Carolina is hired to install a multi-compressor parallel rack system and remote walk-in freezers for a new grocery store. Which state entity holds statutory licensing jurisdiction over this commercial refrigeration project?

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B
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D
Test Your Knowledge

Under 21 NCAC 60 .0311(c), what does "general supervision" require of a licensed refrigeration contractor?

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B
C
D
Test Your Knowledge

What is the legal consequence in North Carolina when an unlicensed entity enters into a commercial contract to install a walk-in freezer facility?

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B
C
D
Test Your Knowledge

If the qualifying licensee of a North Carolina commercial refrigeration contracting company separates from the business, what are the mandatory written notice and grace period requirements under 21 NCAC 60?

A
B
C
D