HVAC License Arkansas: The Six Classes, and Why It Isn't the Health Department (2026)

Arkansas licenses plumbers through the Department of Health. It licenses HVAC contractors through a completely different agency — the Arkansas Department of Labor and Licensing, where the HVACR Licensing Board sits at 900 West Capitol, Suite 400, Little Rock. Two trades, two agencies, two sets of rules, two renewal systems.

That single fact trips up more people than any technical requirement in the state, because guides routinely file HVAC under "Arkansas Department of Health" alongside plumbing. If you send an HVAC application to Slot #24 on West Markham Street, it is going to the plumbing section.

The second thing worth knowing before you start: Arkansas does not license HVAC by journeyman and master. It licenses by class, and the class is defined by the size of the equipment you are allowed to touch. Get the class wrong and you are either paying for capacity you will never use or holding a license that legally cannot install the units you are being asked to install.

This guide covers the six classes and exactly where the boundaries fall, what each one costs, the registrant rule that governs everyone on your crew, the insurance requirement, and the "designated license holder" concept that decides who is legally on the hook for the work.

The six Arkansas HVACR license classes

These come straight from the Board's Administrative Rules Pertaining to the Licensing of Heating, Ventilation, Air Conditioning and Refrigeration Contractors, effective June 3, 2022, and they are repeated verbatim on the Board's own application form.

Class A — unlimited. Entitles the licensee to perform HVACR work "without limitation to BTUH or horsepower capacities." This is the only class with no equipment ceiling.

Class B — limited to 15 tons. Air conditioning systems developing "a total of not more than 15 tons cooling capacity per unit or 1 million BTUH heating input per unit," and refrigeration systems of 15 horsepower or less per unit. The rules define one ton as 12,000 BTUH, so the cooling ceiling is 180,000 BTUH per unit.

Class C — service only, same size ceiling. Same 15-ton / 1 million BTUH / 15 HP limits as Class B, but scope is restricted to servicing, repairing and replacing components. The rule states it flatly: "A Class C license holder shall not install any original HVACR equipment or replace any existing HVACR equipment." You can rebuild a system. You cannot swap it.

Class D — sheetmetal and ductwork only. Entitles the licensee to perform sheetmetal work "as it relates to ductwork for HVACR systems without regard to or limitation of horsepower of the system to which the duct connects." No size limit on the duct side at all — but the licensee "is prohibited from the sale, installation and service of HVACR equipment and systems."

Class E — refrigeration only. Refrigeration work as defined in Ark. Code § 17-33-101, without horsepower limitation. Expressly prohibited from "the sale, installation and service of heating and air conditioning equipment used for the treatment of air for human comfort requirements." Class E is process and commercial refrigeration. It is not comfort cooling.

Class L — lifetime, service and maintenance only. A no-charge lifetime license for holders aged 65 or older who were previously eligible for a Class A through E license. Scope matches the Class B/C size limits, and like Class C the holder "shall not install any original equipment or replace any existing HVACR equipment."

Two structural points about classes:

• You can move down without a test, but not up. A license holder may transfer to a lower classification without examination for a $15.00 fee. Moving to a higher class requires meeting the qualification requirements and passing the exam. And there is a routing rule: only a Class A holder may transfer to Class D or Class E, and D and E are not transferable to each other or to anything else — they are specialty licenses.
• HVACR gas fitting is deliberately tiny. The rules define "HVACR Gas Fitting Work" as gas fitting "limited to installing six (6) feet or less of final gas piping connection to a heating unit from an existing, accessible manual safety shutoff gas cock, installing flue gas vents and combustion air for the HVACR system." Six feet from an existing shutoff. Beyond that you are into the Health Department's plumbing and gas jurisdiction, which we cover in the Arkansas plumbing license guide.

Getting licensed: what Arkansas actually requires

The bar here is lower than most states expect, and Arkansas says so explicitly.

Age. Applicants for Class A, B, C, D or E must be at least 18.

Experience. An applicant "with no licensing background shall present satisfactory evidence of having at least two (2) years experience as an HVACR contractor or an employee of an HVACR contractor." The Board may substitute approved HVACR educational training for experience, with transcripts submitted before Board consideration.

No apprenticeship gate. The rules repeat this sentence three separate times, in three separate contexts: "In no case shall apprenticeship, education, or training be a prerequisite or condition for licensure." It appears again in the reinstatement section. Arkansas has gone out of its way to make sure no one adds an apprenticeship requirement by the back door. There is a separate Earn and Learn provision under Ark. Code Ann. § 17-6-103(1) for those who do complete an apprenticeship, but it is a route in, not a hurdle.

How you prove experience. The Board "shall use the least restrictive requirements by allowing the licensing candidate to show proof of experience in the form of records, affidavits, or bona fide evidence from current or former employers, or persons who can attest to the applicant's work background as an HVACR contractor."

In practice that means the Board's employer-verification affidavit, and it is more demanding than it looks. A separate notarized affidavit must be completed for each employer whose experience you are claiming. The employer signs under oath, gives their own license type and number, describes your job duties "(Be Specific)," and breaks your hours out by category: Residential, Commercial, Refrigeration, Ductwork, and a total. If you spent four years mostly pulling duct and you are applying for Class A, that breakdown will show it.

Examination. Applicants must pass a Board-approved examination. Exams are offered at least four times per year, or more often at the Board's discretion.

Criminal background. The Board "is not authorized to conduct criminal background checks," though it may ask about convictions at application or renewal. Disqualifying offenses are those listed in Ark. Code Ann. § 17-3-102 et seq., unless sealed, pardoned or expunged, and the Board may grant a waiver.

Provisional licensing. On request, the Board "shall immediately issue temporary revocable permits or provisional licensing" to Class A–E applicants on receipt of the application, valid 90 days, extendable on a hardship finding. Provisional holders must attend scheduled examinations or forfeit the permit.

Arkansas HVAC license fees

These are the figures published in the Board's rules and reprinted on the current application form. License and examination fees are set by the Board and the testing vendor and change — confirm the current schedule with the HVACR Board before submitting payment. Note the application form's own instruction: do not submit payment until instructed by the HVACR Board.

Annual license fees:

• Class A — $200.00
• Class B — $150.00
• Class C — $100.00
• Class D — $150.00
• Class E — $150.00
• Class L (lifetime) — no charge
• Registrant — $25.00

Examination fees: a minimum of $55.00 for written exams and $100.00 for computerized exams.

Deferment (inactive license) fees, renewed annually: Class A $40.00, Class B $30.00, Class C $20.00, Class D $30.00, Class E $30.00. Deferment is granted without fees to members of the armed services, and to Class A–E holders who become legally appointed or employed Mechanical Inspectors.

Late payment: a penalty of $10.00 per month is added to a license that expired for non-payment.

Transfers and replacements: $15.00 to transfer down a class; $15.00 for a revised, lost or duplicate license or identification card.

Inspection fees: $25.00 for the first $1,000 (or fraction) of installation valuation, plus $2.00 for each additional $1,000 or fraction. Total inspection fees are capped at $1,000.00 per job. Each re-inspection is $25.00. The Department does not charge to investigate consumer complaints.

Fee waiver. As with the plumbing side, Act 725 of 2021 lets the Board waive the initial licensing fee for applicants receiving Arkansas Medicaid, SNAP, WIC, TEA or Lifeline assistance; approved for unemployment within the last twelve months; or with income not exceeding 200% of the federal poverty guidelines. The waiver boxes are printed on the application itself, each with its own documentation requirement.

Renewal, continuing education, and the expiration date nobody expects

Arkansas HVACR licenses expire one year from the original date of issuance — not on a fixed calendar date. Your renewal deadline is your own anniversary. That is different from the plumbing side, where Master, Journeyman and Apprentice licenses all expire December 31 and Restricted licenses all expire June 30.

Continuing education is four hours per calendar year, and it is a hard condition of renewal: "No HVAC/R license shall be renewed unless the licensee completes at least four (4) hours of continuing education per calendar year." Two of the four hours must be on the mechanical code as adopted by the Board; the remaining two may be any Board-approved instruction.

Miss it and there is a grace mechanism, but it is narrow. A licensee who fails to complete the hours by year end "may obtain the required continuing education hours within ninety (90) days without being subject to examination requirements or civil penalties for performing unlicensed HVAC/R work" — but all other civil penalties still apply. Blow through the 90 days and the rule is unambiguous: "the licensee shall be required to take another examination."

Only Board-approved courses count, curricula must be submitted to the Board at least 60 days before the course date, and — this matters if you ever have to prove attendance — "The course provider's roster is the only document acceptable to confirm completion of course credit." Your certificate is not the record. The provider's roster is. Providers must keep it for at least five years.

Reinstatement. A holder whose license expired for non-payment applies for reinstatement with an amended experience record covering everything since the lapse, plus $10.00 per month in penalties. The Board decides whether to require an exam. Reinstating a deferred license only requires paying the current license fee — but if it has been deferred over five years the Board may ask for a work-experience form, and applicants delinquent over five years must take the prescribed exam.

The registrant rule — this governs your whole crew

This is the part of Arkansas HVAC law that most affects a growing company, and it has nothing to do with your own license.

The rules define a "Registrant" as "a person who does not hold a Class A, B, C, D or E HVACR license and who can only perform work for an HVACR licensee and who holds a current HVACR registration." Registration costs $25.00 per year, and registrants "must be legally employed by a licensed class A, B, C, D, E, or L contractor."

The obligation sits with the license holder, not the worker. The rules define a "Designated License Holder" as "the Class A, B, C, D or E licensee who is responsible for the HVACR work performed," and then state: "Employees of the designated license holder shall be a registrant, unless otherwise exempt. The designated license holder shall be solely responsible to maintain the registration of all employees required to be registered under Ark. Code 17-33-303(d)(3) and these rules."

Solely responsible. If a tech on your truck is unregistered, that is the license holder's problem, and it is the license holder's license that is exposed.

Registrants must carry the card. The rules require that "The wallet card or license card for each license holder or registrant, on the jobsite, must be with the person to which it was issued for inspection by the state or local inspector."

Insurance, signage, and the lien trap

Liability insurance is mandatory and specific. Any Class A, B, C, D or E holder "shall maintain liability insurance for any work performed or shall be covered by an employer policy with the minimum coverage." The minimum is $250,000 for an individual licensee, or $250,000 per licensed employee for an employer-provided policy. Proof must be presented to the Board at issuance and at every renewal.

Note what is not required: Arkansas's HVACR rules impose no surety bond at the trade-license level. A bond does appear later, at the contractor-license level — see below.

Vehicle and jobsite signage is a rule, not a marketing suggestion. Each licensed contractor "shall display (in a prominent, legible manner) the license number and company name in letters not less than two inches high on both sides of all service and installation vehicles." The license number and company name must also be displayed at all job sites. The rules even give the format: HVACR LICENSE #0000001. Each license must also be displayed at the contractor's place of business as listed with the Board.

Address and affiliation changes are on a 30-day clock. A license holder must notify the Board in writing within 30 days of any change in permanent mailing address, business affiliation, business location or business telephone. A change of mailing address, business affiliation or business location requires a formal license revision — with the $15.00 fee. The address on file is treated as your address of record, and every notice including your expiration notice goes there.

The lien trap. Buried in the penalties section is the sentence that costs the most money: "An unlicensed person shall not be entitled to a mechanic's and materialman's lien, a laborer's lien or any other artisan's lien for work done in violation of these rules." You can do the work, invoice it, go unpaid, and have no lien rights. That is separate from — and usually far worse than — the civil penalty, which is capped at $250.00 per violation, with each day of a continuing violation treated as a separate violation for penalty purposes.

What is exempt

Arkansas carves out a specific list, and one of the exemptions is unmistakably Arkansas.

The rules do not apply to household appliances; AGA-approved unvented space heaters; factory-assembled, air-cooled, self-contained refrigeration equipment of 1.5 HP or less with no refrigerant lines outside the cabinet; factory-assembled window units of 36,000 BTUH or less not connected to ducts; window, attic, ceiling and wall fans in residences; or poultry operations, whether engaged in hatching, primary processing or further processing of chicken, turkey or other fowl.

The Act also does not apply to a person performing HVACR work on an existing building they own and occupy as their home, or on their own farm; public utility construction and maintenance incidental to the utility's business; motor vehicle work; architects and registered engineers designing systems for design criteria only; hospital employees doing work incidental to hospital operations; and gas-fired floor furnace, wall furnace or unit heater work by a person licensed under Ark. Code Ann. § 17-38-301 et seq. within the limits of that license.

Anyone exempt still has to conform to the rules on performance of HVACR work and still has to obtain local permits and inspections.

The adopted code is the International Mechanical Code, 2021 edition, adopted and incorporated by the Board as "the standard for the conduct of HVACR work."

Getting from HVAC license to contractor license

An HVACR license lets you perform mechanical work. It does not let you contract for construction above Arkansas's dollar thresholds. That belongs to the Arkansas Contractors Licensing Board, also under the Department of Labor and Licensing but a separate board, at 4100 Richards Road, North Little Rock.

The thresholds:

• Residential contract work of $2,000.00 or more including labor and materials requires a residential license.
• Commercial work requires a commercial license. Restricted Commercial caps you at projects under $750,000 including labor and material; Unrestricted Commercial has no ceiling.
• A commercial license automatically qualifies you for residential work in the same classification or specialty.

The Contractors Licensing Board's commercial application lists "Mechanical (Plumbing & HVACR)" as major classification 6, and "Heating, Ventilation, Air Conditioning, Refrigeration" as a named specialty. Both are flagged with a double asterisk meaning they "require an Arkansas Trade License or Certification" — which is precisely your HVACR class license. Major classifications require five years of documented experience; specialties require one year.

The commercial application also requires a $10,000 Contractor's Bond in the principal name and EIN as registered with the Secretary of State, a compiled financial statement from an independent (not in-house) CPA less than one year old, and a passing score on the Arkansas Business and Law exam — delivered by PSI at an $84.00 examination fee, open book, 50 multiple-choice questions, two-hour limit. (Vendor fees change; verify with PSI.)

There is a detail in the financial statement rule worth planning around: "The expiration date of the license will be determined by the date of the financial statement submitted." Your contractor license expiration is pinned to your CPA's balance sheet date, not your application date. And half the required net worth for the classification must be cash in the bank — not stockholder notes, not receivables.

Who has to be the licensed person

Every Arkansas Contractors Licensing Board application, commercial and residential alike, asks for one named individual: the person who took the Business & Law exam. It asks their name, their Social Security Number, how long they have been with the company, and then requires them to check exactly one of three boxes:

• Sole Owner
• Full time paid employee
• Officer, member, or partner of the company and is actively involved in the day-to-day operations

The same form defines "You/Your" as including "the qualifier of this company" — Arkansas uses the word plainly — along with any officer and anyone owning 10% or more of the entity.

If the licensed individual is not an owner and not an officer, there is exactly one remaining box, and it reads full time paid employee. That is why every qualifier The Licensing Company places is placed as a W-2 full-time employee of the client's company. Not a percentage of the job. Not a flat fee per project. Not a 1099. The full breakdown of Arkansas's structure is in Arkansas Contractor License Qualifier: The Three Boxes on the Form, and the multi-state comparison is in Does a Contractor License Qualifier Have to Be an Owner or an Employee?.

Frequently asked questions

Does Arkansas require an HVAC license? Yes, for anyone performing HVACR work for the public, with the exemptions listed above. Licensing is by class — A through E, plus the age-65 lifetime Class L — and each class has a defined equipment ceiling. Employees of a licensed contractor who do not hold a class license must be registered as registrants at $25.00 per year, and the designated license holder is solely responsible for maintaining those registrations.

Which Arkansas HVAC class do I need? If you install or replace equipment over 15 tons of cooling per unit, over 1 million BTUH heating input per unit, or refrigeration over 15 HP per unit, you need Class A. Under those ceilings, Class B covers installation and Class C covers service and component replacement only. Class D is ductwork with no size limit but no equipment work at all. Class E is refrigeration only, expressly not comfort cooling.

Can a Class C license holder replace a condenser? No. Class C authorizes servicing, repairing and replacing components, and the rule states directly that a Class C holder "shall not install any original HVACR equipment or replace any existing HVACR equipment." Replacing the unit is Class B or Class A work depending on capacity.

How long is an Arkansas HVAC license good for? One year from the original date of issuance — an anniversary date, not a fixed calendar date. Renewal requires four hours of continuing education for the calendar year, two of which must be on the adopted mechanical code.

Do I need a bond for an Arkansas HVAC license? Not for the HVACR class license itself. The Board requires liability insurance with minimum coverage of $250,000 for an individual licensee or $250,000 per licensed employee under an employer policy, with proof at issuance and renewal. A $10,000 contractor's bond applies separately at the Arkansas Contractors Licensing Board level.

How much does it cost to bring in a qualifier for the Mechanical classification? There is no honest single number, and any site that publishes one is guessing. It moves with the classification, the project ceiling you need, the risk profile of the work, how many jurisdictions are involved, and how long the arrangement needs to run. Tell us the actual scope through our consultation packages and we will price that, not a hypothetical.

The short version

Arkansas HVAC licensing is more forgiving on the way in than most states — two years of experience, no apprenticeship requirement, provisional licensing on request — and considerably stricter once you are operating. Four CE hours every calendar year with an exam as the penalty for missing them. $250,000 in liability coverage proved at every renewal. Two-inch lettering on both sides of every truck. Registration for every unlicensed employee, with sole responsibility landing on the designated license holder. And no lien rights at all for work done unlicensed.

The commercial ceiling is where most companies hit the wall, because the Mechanical classification at the Contractors Licensing Board is asterisked — it will not issue without an Arkansas trade license behind it. If you need that classification before your own experience clock runs out, start with what a qualifying agent is and then how to bring one on.

Related coverage: Plumbing License Arkansas · How to Get an Electrician License in Arkansas · HVAC License Mississippi · HVAC License Kansas · State licensing guides

Requirements, fees and rule citations reflect the Arkansas HVACR Licensing Board's administrative rules effective June 3, 2022, the Board's HVACR license application (Rev. 8/23), the Arkansas Contractors Licensing Board application forms effective January 2025, and PSI's published examination fee. Board and testing-vendor fees are subject to change — verify current figures with the Arkansas Department of Labor and Licensing HVACR Board, the Arkansas Contractors Licensing Board, and PSI before relying on them.