Ohio · HVAC licensing · official-source guide
Yes. The Ohio Construction Industry Licensing Board, part of the Department of Commerce Division of Industrial Compliance, issues the state HVAC contractor license for commercial work. You need five years in the trade, a score of seventy per cent on both exam parts, and at least five hundred thousand dollars in contractor liability insurance. One, two, and three family homes are regulated locally.
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Verify a licenseVerified against agency sources on 2026-09-14. Rules and fees change; confirm with the named authority before relying on this guide.
The Ohio Construction Industry Licensing Board, usually shortened to OCILB, issues the HVAC contractor license. The board sits inside the Division of Industrial Compliance at the Ohio Department of Commerce, and correspondence goes to 6606 Tussing Road, PO Box 4009, Reynoldsburg, Ohio 43068. Chapter 4740 of the Revised Code splits the board into an administrative section and three specialty sections. HVAC applications are handled by the heating, ventilating, air conditioning, and refrigeration section, which sets qualification rules, designs the examination, and approves continuing education courses. The administrative section then issues and renews the paper license. Section 4740.01 defines a license as a credential the board issues to an individual as an HVAC contractor, refrigeration contractor, electrical contractor, plumbing contractor, or hydronics contractor. The reach of that license is narrower than most contractors expect. The same section ties licensure to a construction project and then carves residential buildings out of that definition. Section 3781.06 defines a residential building as a one family, two family, or three family dwelling house together with accessory structures such as an attached garage or porch. The practical result is that the OCILB license governs commercial and industrial HVAC work in Ohio. A furnace changeout in a single family house sits outside chapter 4740 and answers to whatever the city or county requires instead.
Ohio does not issue one broad mechanical license. The board licenses five separate trades, and the eLicense search screen lists them as EL for electrical contractors, HV for HVAC contractors, HY for hydronics, PL for plumbing contractors, and RE for refrigeration contractors. Warm air heating and air conditioning work falls under the HV license. Commercial refrigeration work, including rack systems and walk in boxes, falls under the separate RE license. Steam and hot water heating systems are hydronics and carry their own HY license. A shop that installs rooftop units, services supermarket refrigeration, and pipes a hot water boiler plant therefore needs three different licensed individuals or one person holding three licenses. Ohio does let a licensed contractor touch a limited amount of wiring. Section 4740.13 says a contractor licensed under chapter 4740 may install, service, and maintain the related or interfaced control wiring for equipment and devices tied to that specific license, on the condition that the control wiring runs at less than twenty five volts. Anything above that threshold belongs to an electrical contractor. Picking the wrong trade code is an expensive mistake, because the board approves your application for one trade only and the examination you sit is specific to the trade you applied for.
Sourceselicense4.com.ohio.gov 1codes.ohio.gov 2codes.ohio.gov 3
Ohio licenses individuals, not companies, and then bolts that individual license onto a business. Section 4740.07 says the administrative section issues and renews every license in the name of the individual who meets the requirements. Every applicant must then request that the license be assigned to a contracting company that employs them. Once assigned, the board issues a license in the company name that states the name and position of the individual who made the assignment. A license that is never assigned goes into inactive status. While a company holds an assigned license, the board will not issue that same individual a second license of the same type for the same kind of contracting. If the licensed individual leaves, the contractor or the company must notify the specialty section immediately of the date the association ended. The assignment then goes invalid ninety calendar days after the contractor dies, ninety calendar days after the contractor completes a change of company form, or on an earlier date the two sides agree to. A license also terminates immediately when the individual dies, apart from that ninety day window. Tradespersons who work under a contractor and do not control the means, method, and manner of the work do not need their own OCILB license.
To qualify for the HVAC examination you must be at least eighteen, be a United States citizen or a legal alien with documentation, and have worked as a tradesperson in the HVAC trade for not less than five years immediately before the application date. Section 4740.06 also accepts a currently registered Ohio engineer with three years of business experience in the trade, five years as an Ohio government inspector in the trade, or other experience the specialty section accepts. The paperwork is where applications stall. The board asks for tax documents covering the last five consecutive years, meaning W2 forms or Schedule C on Form 1040. Alongside those you supply one of four proofs: at least one permit for each of the last five years pulled by the licensed contractor you worked under, an active journeyman card in the trade, a certificate of completion from an apprenticeship approved by Ohio or the United States Department of Labor, or certificates showing forty hours of non duplicated code continuing education taken live or virtually through an OCILB approved training agency. Self guided courses do not count toward that forty hours. Sewer service, water service, gas service, and drain cleaning permits are specifically excluded. Veterans complete the same form and attach a DD214 with supporting training records.
Sourcesdam.assets.ohio.gov 1codes.ohio.gov 2codes.ohio.gov 3
OCILB approves you to test, and a testing agency delivers the examination. The board's own page says licenses go to contractors who successfully pass the PROV licensing examination. Rule 4101:16-2-03 requires the examination for each trade to be scheduled at least four times a year at locations around the state, with the approved applicant scheduling the actual date with the testing agency. The examination has two parts: one part specific to the trade you applied for, and one part covering business and law. You must score seventy per cent on each part to pass. Once you clear both, the business and law part stays good for three years from the date your license is issued, so a licensee who later sits for a second OCILB trade only retakes the trade portion. The specialty section may allow an oral examination or another accommodation when an applicant's ability is substantially impaired, and may permit testing in a language other than English where fluency is the barrier. Fail and you wait: section 4740.06 bars a retake for at least sixty days after your most recent attempt. Fail five times and you must file a fresh application before testing again. Approved candidates must also complete BCI and FBI background checks before sitting for the examination.
Sourcescom.ohio.gov 1codes.ohio.gov 2codes.ohio.gov 3dam.assets.ohio.gov 4
Rule 4101:16-2-09 fixes the OCILB fee schedule, and by contractor standards it is cheap. The application for examination costs twenty five dollars, payable to Treasurer, State of Ohio. Issuance of the license after you pass costs another twenty five dollars. Annual renewal of each license costs sixty dollars, and contractors who qualify for the triennial option pay one hundred eighty dollars for three years. Miss the renewal date and the board may assess a late fee of not more than one hundred twenty dollars for each license not timely renewed. A check that bounces triggers a thirty dollar penalty fee for each license. Bringing an inactive license back to active status costs a sixty dollar reactivation fee. Every one of those fees is nonrefundable and payable to the administrative section of the board. Continuing education carries its own charges: a training agency pays ten dollars plus one dollar per credit hour for each course application, one dollar per credit hour of instruction per attendee, and twenty five dollars for each training agency application. Those course costs usually reach you inside the tuition a training provider charges. Budget separately for the criminal records check, the testing agency's own examination fee, and the local registrations covered further down this page.
Ohio does not require a state surety bond for the HVAC contractor license. It requires insurance instead. Rule 4101:16-2-09 says every licensee, except one whose license has been placed in inactive status, must maintain contractor's liability insurance in the individual's name including complete operations coverage in an amount of at least five hundred thousand dollars. The OCILB examination application repeats that figure and asks for a certificate of liability insurance before the license is released. Where the license has been assigned to a business entity under section 4740.07, the liability insurance must be written in the name of that business entity, and the business entity must be registered with the Ohio Secretary of State to do business in Ohio. Section 4740.06 adds that the insurance may be carried in only one contracting company name. That single company rule catches shops that run several branded entities off one license. Letting the coverage lapse is not a paperwork problem. Rule 4101:16-1-06 lists failure to maintain required contractor liability insurance throughout the license year as grounds for the specialty section to suspend, revoke, or refuse to issue the license, or to fine the licensee, unless the license was properly placed in inactive status first. Renewal requires you to certify the coverage is still in force.
Sourcescodes.ohio.gov 1codes.ohio.gov 2codes.ohio.gov 3dam.assets.ohio.gov 4
Every license a contractor holds under chapter 4740 expires on the same annual date, which is the expiration date of the original license. You may file the renewal up to ninety calendar days before expiration. Renewal requires three things: certification that you still carry at least five hundred thousand dollars in contractor liability insurance, payment of the renewal fee, and proof that you met the continuing education requirement. Rule 4101:16-2-08 sets that requirement at ten classroom hours of approved continuing education each year. A licensee holding plumbing, hydronics, HVAC, or refrigeration licenses may take all ten hours in any course approved by any of the specialty sections, which is more flexible than the electrical rule. A classroom hour means at least fifty minutes of instruction. Extra hours do not roll forward to the next renewal period, and no one gets credit for more than ten classroom hours taken in a single calendar day. Ohio also runs a compliant contractor program under rule 4101:16-1-08. Licensees who demonstrate a year of compliance get a two hour reduction, so eight hours a year, and may choose to renew every three years instead of annually. Miss the continuing education deadline and the license is suspended automatically, with no board action required.
This is the rule Ohio HVAC contractors get cited for most often, and it is unusually specific. Rule 4101:16-2-05 requires you to display the issued license in a conspicuous place in each office or place of business and at each construction site. Separately, you must display the license number assigned by the administrative section on items associated with the specialty contracting business. The rule names business locations, business cards, vehicles carrying the business name, contracts, advertisements, and advertising specialty items. A telephone directory advertisement is covered unless it shows nothing more than name, address, and telephone number. Pens, pencils, t-shirts, hats, and similar small items are not treated as advertising specialty items. The format is fixed: the license number shall be displayed as OH LIC# followed by the number. On any vehicle carrying the business name, the number must be prominently placed on at least two sides of the vehicle and be at least two inches in height so it is easily noticed. One more line matters for shops with multiple brands: no license number may be advertised for more than one business name. Violating a rule adopted under chapter 4740 is listed in rule 4101:16-1-06 as grounds for suspension, revocation, added continuing education hours, or a fine.
Section 4740.13 makes the offense broader than doing the work. No person shall act as or claim to be a type of contractor the chapter licenses unless that person holds or has been assigned a license for that type of contracting. Advertising yourself as a commercial HVAC contractor in Ohio without an assigned HV license is itself the violation, whether or not you ever pull a permit. Section 4740.99 sets the penalty at a minor misdemeanor for a first violation and a misdemeanor of the fourth degree for subsequent violations. The criminal charge is not the main exposure. On request of the specialty section, the attorney general may bring a civil action for relief that includes a temporary restraining order or a permanent injunction, filed in the court of common pleas in the county where the unlicensed person lives or is holding out as licensed. Rule 4101:16-1-05 sets out how that starts: anyone may file a complaint with the specialty section, the section decides whether it warrants investigation, and a majority vote can send the matter to the attorney general. An injunction that names your company is public, permanent, and far more damaging to a commercial bid list than a fourth degree misdemeanor fine.
Rule 4101:16-1-06 gives the specialty sections room to suspend, revoke, refuse to issue, add continuing education hours, or fine a licensee. The grounds worth reading twice are the business ones. Transferring your license to another person or entity without the section's approval is on the list. So is allowing your license to be used by an unlicensed person or entity, which is exactly what happens when a shop lets an unlicensed crew pull work under a borrowed number. Engaging in fraud, misrepresentation, or deception in the conduct of business is listed separately from obtaining the license by fraud. Failing to maintain required contractor liability insurance throughout the license year is grounds on its own. One provision catches Ohio contractors by surprise: if a municipality or other governmental agency suspends or revokes your local contracting license or registration and notifies the section, that alone is grounds for state action. A city dispute in Columbus or Cincinnati can therefore reach your statewide credential. The section must hold an adjudication hearing before revoking, suspending, or fining, must notify you in writing of its order, and a party adversely affected may appeal under section 119.12 of the Revised Code. Section 4740.101 also ties the license to child support compliance.
Ohio reciprocity is agreement based, not automatic. Section 4740.08 allows the specialty section to authorize a license without examination only where a written reciprocity agreement between the states exists, the applicant submits a copy of that agreement, and pays the licensure fee. The section must also find that the other state's requirements are substantially equal to Ohio's and that the other state extends similar reciprocity to Ohio licensees. Rule 4101:16-2-10 adds a completed criminal records check before any reciprocal license is issued. The board publishes trade specific reciprocity verification forms, including one for West Virginia Contractor Licensing Board holders in plumbing or HVAC, which must be completed by a state official, carry a state seal, report the examination score, and be returned directly to the board in Reynoldsburg. There is a second route that does not depend on an agreement. Section 4740.06 lets a holder of a substantially similar out of state occupational license qualify to take the Ohio examination by showing at least five building authorizations issued in that jurisdiction, at least one tax return reflecting income from that licensed work, and proof that the employing company is registered in Ohio as a foreign corporation or foreign limited liability company with a designated Ohio agent.
Sourcescodes.ohio.gov 1codes.ohio.gov 2dam.assets.ohio.gov 3
Holding the OCILB license does not let you pull a permit in Columbus. The Department of Building and Zoning Services at 111 North Front Street runs a separate contractor registration, and Section 4114 of the Columbus Building Code sets what you must present. For an HVAC registration, described on the city form as HVAC warm air heating, you submit the OCILB contractor application completed and signed by the license holder, a current OCILB license, and a bond in the amount of twenty five thousand dollars on the city's own bond form. Your Columbus registration is assigned to the name of the business entity exactly as that entity appears on your OCILB license, and the city warns that the individual name and company name must be listed identically on every document. The registration fee is published in the contractor license and registration fees area of the city's combined development related fee schedule rather than on the application. Applications completed with a notary seal and signature may be mailed or emailed to the licensing office. Without notarization the applicant has to hand deliver the application during office hours. Columbus registers the same five OCILB trades separately: electrical, HVAC, hydronics, plumbing, and refrigeration.
Sourcescolumbus.gov
Cleveland's Department of Building and Housing requires an HVAC permit for furnace and boiler installation or replacement, refrigeration equipment, fireplaces, and for new, extended, or repaired ductwork, hydronic lines, and control wiring. The city states plainly that contractors must be bonded, insured, and licensed with the State of Ohio and registered with the City of Cleveland, and that do it yourselfers do not have to register. Cincinnati registers contractors under Chapter 1106 of its Municipal Code through the Department of Buildings and Inspections at 805 Central Avenue. OCILB licensed specialty contractors are one of the three registration categories, alongside home improvement contractors and building construction contractors. Cincinnati requires liability limits of at least one hundred thousand dollars for damages to a single person and three hundred thousand dollars for one occurrence, plus proof of Ohio workers compensation coverage. The registration fee is one hundred twenty five dollars plus a three per cent technology surcharge and a one per cent financial recovery fee, totaling one hundred thirty dollars per year for up to three years, and the registration expiration must match your state license expiration date. Same day processing costs an additional two hundred eight dollars. A first citation for contracting unregistered in the city carries a seven hundred fifty dollar fine.
Sourcesclevelandohio.gov 1clevelandohio.gov 2cincinnati-oh.gov 3
No Ohio license substitutes for federal refrigerant certification. EPA regulations at 40 CFR Part 82, Subpart F, issued under Section 608 of the Clean Air Act, require that technicians who maintain, service, repair, or dispose of equipment that could release ozone depleting refrigerants be certified. EPA treats attaching and detaching hoses and gauges to measure pressure, adding refrigerant to or removing refrigerant from an appliance, and any other activity that violates the integrity of a small appliance or an MVAC-like appliance as covered work. Apprentices are exempt while closely and continually supervised by a certified technician. There are four certification types. Type I covers servicing small appliances. Type II covers servicing or disposing of high or very high pressure appliances other than small appliances and motor vehicle air conditioners. Type III covers servicing or disposing of low pressure appliances, which is where centrifugal chillers land. Universal covers all types of equipment. EPA does not issue the cards itself; approved certifying organizations do, and EPA publishes the list of programs. This matters for Ohio staffing because the OCILB license is one credential held by one qualifying individual, while Section 608 certification has to be held by each technician who touches refrigerant on your trucks.
Ohio maintains a free public license search, and commercial customers use it. The OCILB eLicense Center at the Department of Commerce lets anyone search by license type, credential number, first name, last name, maiden name, state, and county. The license type dropdown carries the same codes the board uses internally: EL for electrical contractors, HV for HVAC contractors, HY for hydronics, PL for plumbing contractors, RE for refrigeration contractors, and TA for training agencies. The same screen offers a separate lookup of licensees by employer, which is how a general contractor checks whether the HVAC license a bidder cites is actually assigned to the company submitting the bid. That assignment detail is the part most bidders overlook. Rule 4101:16-2-04 says the license itself carries the expiration date, a license number assigned only to that licensee, the name of the licensee and the licensee's position at the company, the name of the contracting company the license is assigned to, and the type of specialty license. Every one of those fields is checkable before a purchase order is issued. Keeping the assignment current after a personnel change, and keeping the number on your estimates in the OH LIC# format, is what makes that check come back clean.
These are common details other guides publish about Ohio, but we could not verify them from the agency source. Confirm them directly before relying on them.
No. Section 4740.01 limits the license to construction projects and excludes residential buildings, and section 3781.06 defines a residential building as a one, two, or three family dwelling house plus accessory structures. Residential furnace and air conditioning work is regulated by the city or county, not by OCILB.
No. Chapter 4740 licenses the individual who has responsibility for the means, method, and manner of the work. A tradesperson employed by a contractor who does not assume that responsibility is not required to hold an OCILB license. Each technician touching refrigerant does need federal EPA Section 608 certification.
Ten classroom hours of approved continuing education per year. A licensee holding HVAC, refrigeration, plumbing, or hydronics licenses may take all ten in any course approved by any specialty section. Compliant contractor program members get a two hour reduction to eight hours and may renew on a three year cycle.
At least five hundred thousand dollars of contractor's liability insurance including complete operations coverage. If your license is assigned to a business entity, the policy must be in that entity's name, and the entity must be registered with the Ohio Secretary of State. Coverage may be carried in only one contracting company name.
Not at the state level. OCILB rules require liability insurance, not a bond. Cities can and do require bonds separately. The Columbus OCILB contractor application, for example, requires a twenty five thousand dollar bond on the city's own bond form before a registration is issued.
Seventy per cent on each of the two parts. One part is specific to the HVAC trade and one part covers business and law. After you pass both, the business and law result stays valid for three years from the date your license is issued if you later apply for another OCILB trade.
Not less than sixty days after your most recent attempt, under section 4740.06. If you fail five times, you must file a new application with the specialty section before you are permitted to test again. The examination is offered at least four times a year at locations around the state.
On business locations, business cards, vehicles carrying the business name, contracts, and advertisements, in the format OH LIC# followed by your number. On vehicles it must be on at least two sides and at least two inches tall. The license itself must be posted at each office and each construction site.
No. Rule 4101:16-2-05 states that no license number may be advertised for more than one business name. Section 4740.06 also limits the required liability insurance to one contracting company name. Running a second brand in Ohio means a second licensed individual and a separate assignment.
It can reach the state credential. Rule 4101:16-1-06 lists notice that a municipality or other governmental agency has suspended or revoked a licensee's local contracting license or registration as grounds for the specialty section to act. You would get an adjudication hearing and an appeal right under section 119.12.
Only where a written reciprocity agreement exists between Ohio and that state, you submit a copy, pay the fee, and clear a criminal records check. Ohio publishes trade specific verification forms, including one for West Virginia HVAC and plumbing licensees that a state official must complete and seal.
Through the OCILB eLicense Center search, which allows lookup by license type, credential number, and name, and also offers a lookup of licensees by employer. That employer search shows whether the HV license you cite is actually assigned to the company named on your bid, which is the field bidders most often get wrong.
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