HVAC Technician License in Oklahoma — Requirements, Fees & Exam

How to get licensed as an HVAC technician in Oklahoma: 2,000 hours (Unlimited Mechanical HVAC License (issued as Journeyman or Contractor)), 6 hrs CE — verified from Oklahoma Construction Industries Board (CIB).

Source-verified

Requirements below are drawn from Oklahoma Construction Industries Board (CIB), Committee of Mechanical Examiners (official site) and last verified July 24, 2026. Boards change fees and rules often — confirm before acting.

Requirements at a glance

Who must be licensed - Oklahoma licenses the INDIVIDUAL (no blanket employee exemption): Under 59 O.S. 1850.7, 'No person shall engage or offer to engage in, by advertisement or otherwise, any mechanical work as a journeyman or contractor who does not possess a valid and appropriate license from the Construction Industries Board. No business entity shall act as a mechanical firm unless a contractor is associated with and responsible for all mechanical work of such entity.' A 'mechanical firm' (business) must therefore have a licensed mechanical contractor associated with it, but the credential is held by the INDIVIDUAL - as a mechanical apprentice (registered), a mechanical journeyman, or a mechanical contractor. There is no general 'employee of a licensed contractor needs no credential' exemption: an employed technician must at minimum hold a mechanical apprentice registration (59 O.S. 1850.9) and work under the direct supervision of a journeyman or contractor.
Mechanical apprentice registration (the entry point): Anyone learning the trade on the job registers as a mechanical apprentice. The CIB registers an apprentice who is 16 or older and either enrolled in a Board-recognized school/training course or has arranged employment with a licensed mechanical contractor (59 O.S. 1850.9; OAC 158:50-9-5). Registration is $5 application + $20 registration and expires one year after the date of registration (renewable). Apprentices must work in a ratio of no more than three apprentices to each supervising journeyman or contractor. For Oklahoma experience to count toward a journeyman license, the applicant must have held the apprentice registration during that experience.
Journeyman qualifications (three years' experience or an education substitution): A mechanical journeyman applicant must be at least 18 and show three (3) years of verifiable experience in the mechanical trade in the category applied for, OR one of several Committee-approved education substitutions (an associate's degree or 1,000+ hour vocational diploma plus 1 year of experience; a 500+ hour diploma plus 2 years; 375+ hours plus 2 1/4 years; 334+ hours plus 2 1/3 years; 250+ hours plus 2 1/2 years), OR equivalent verifiable U.S. military experience (OAC 158:50-9-1(b)(1)). One year of verifiable experience equals 2,000 hours. The journeyman must pass the trade examination for the category.
Contractor qualifications (journeyman standard + one year, plus a business/law exam): A mechanical contractor applicant must meet the same requirements as a journeyman PLUS one (1) additional year of experience in the mechanical trade (OAC 158:50-9-1(b)(2)), and must be a permanent employee, owner, partner or officer of the mechanical firm. The contractor exam has two portions - a trade portion and a business/law portion - and both must be passed. A contractor holding a current license in one category may pursue additional contractor categories in the same trade without retaking the business/law portion (OAC 158:50-9-1(c)). The contractor license is the highest-ranking mechanical license.
Examination (third-party testing vendor; some categories use an external certification instead): A license cannot be issued until the applicant passes the appropriate examination; passing scores are set by the Committee of Mechanical Examiners (59 O.S. 1850.6; OAC 158:50-9-1(c)). Once an application is approved, the applicant is given the contact information of the Board's approved third-party testing vendor to schedule the exam; the vendor's exam fee is paid separately and is not published by the CIB as a fixed figure. Retake limits: no retake within 30 days of a first failure or 90 days of a second or subsequent failure. Some categories require an external certification rather than a CIB exam - Ground Source Piping (Committee-approved certification, no CIB exam), Medical Gas (certification to the NFPA 99 standard or from a Committee-approved organization), Petroleum Refinery Process Piping (industrial pipefitter certification), and Fueled Hearth Product Work (NFI certification in gas, wood or pellets).
Bond and insurance (active contractors only; inactive contractors are exempt): Before an active mechanical contractor license is issued, the applicant must file a corporate surety bond in the sum of $5,000 payable to the Oklahoma Construction Industries Board (a continuous bond with a 30-day cancellation notice), and must provide proof of a general liability insurance policy of at least $50,000, adding the CIB as a certificate holder (OAC 158:50-5-3). The $5,000 bond is in lieu of filing a separate bond with each municipality where the contractor works. A contractor may elect INACTIVE status by paying the annual renewal fee and dropping the bond and insurance; an inactive contractor is regulated as a journeyman and may reactivate at any time by proving compliance with the bond and insurance requirements (59 O.S. 1850.8(B); OAC 158:50-5-2(a)(2)).
Annual renewal and continuing education (6 hours every 3 years): Journeyman and contractor licenses are issued for no more than one year and expire on the last day of the licensee's birth month (59 O.S. 1850.8(B)); apprentice registrations expire one year after the date of registration. No journeyman or contractor license is renewed unless the licensee has completed at least six (6) hours of Committee-approved continuing education every three (3) years (the 36 months preceding the license expiration date) - OAC 158:50-9-7. A licensee is exempt from CE for three years from the date they passed their current licensing exam. Renewals more than 30 days late require the renewal fee plus a late fee (journeyman $25, contractor $100); no late fee applies to a license that expired while the licensee was in military service if renewal is made within one year of discharge.
Local permits and registration still apply: A state mechanical license does not displace municipal authority. 59 O.S. 1850.12 provides that the Mechanical Licensing Act 'shall not prohibit any political subdivision from appointing inspectors, making inspections, requiring permits for mechanical work and charging such fees as are determined to be necessary,' and a political subdivision 'may require contractors to register within their jurisdiction.' The statewide $5,000 contractor bond, however, is accepted in lieu of a separate municipal bond (OAC 158:50-5-3(a)(3)).

Legal basis

Oklahoma Construction Industries Board (CIB), Committee of Mechanical Examiners administers HVAC technician licensing in Oklahoma. Every figure below is verified against the board’s own official pages and dated. Who must personally hold a credential — the contractor, the business, or the individual worker — is set out under Requirements.

What it’s called

In Oklahoma the state HVAC credential is a MECHANICAL license issued by the Construction Industries Board (CIB) to an INDIVIDUAL - a mechanical journeyman or mechanical contractor - in a specific category, not a business-only registration and not a card literally named ‘HVAC license.’ The CIB’s own pages call the core category ‘HVAC’ (also ‘HVAC/R’) and issue it as a Limited Mechanical HVAC license (cooling up to 25 tons; heating up to 500,000 Btu/h per appliance) or an Unlimited Mechanical HVAC license (no size cap); related categories include Refrigeration, Sheet Metal, Natural Gas Piping, Process Piping and Limited Residential. Searchers’ folk terms - ‘HVAC license,’ ‘AC license,’ ‘air and heat license,’ ‘mechanical license,’ ‘HVAC contractor license’ - all map to a CIB mechanical journeyman or contractor license in the HVAC (or a related) category. A ‘mechanical contractor’ is the top individual license and is what a mechanical firm must have associated with it; an employed technician still needs at least a mechanical apprentice registration. Separately, EPA Section 608 refrigerant-handling certification is a FEDERAL credential for handling refrigerant, not an Oklahoma license and not a substitute for CIB licensure.

License types & fees

Type	Experience	Exam	Fee
Unlimited Mechanical HVAC License (issued as Journeyman or Contractor)	Journeyman: at least 18 years old with three (3) years of verifiable experience in the mechanical trade in the category, OR a Committee-approved education substitution (an associate's degree / 1,000+ hour vocational diploma plus 1 year; a 500+ hour diploma plus 2 years; 375+ hours plus 2 1/4 years; 334+ hours plus 2 1/3 years; 250+ hours plus 2 1/2 years), OR equivalent U.S. military experience (OAC 158:50-9-1(b)(1)). For Oklahoma-obtained hours to count, the applicant must have held a mechanical apprentice registration during that experience; one year of verifiable experience equals 2,000 hours. Contractor: the same requirements as a journeyman PLUS one (1) additional year of experience (OAC 158:50-9-1(b)(2)).	Journeyman: pass the trade examination for the category (passing score set by the Committee), administered by the Board's approved third-party testing vendor whose contact information is provided after the application is approved. Contractor: pass BOTH the trade portion AND a business/law portion of the contractor exam (OAC 158:50-9-1(c)).	Journeyman: $25 application + $50 initial license = $75 to obtain; $75 annual renewal ($25 late fee). Contractor: $30 application + $300 initial license = $330 to obtain; $200 annual renewal ($100 late fee). A separate examination fee is paid to the third-party testing vendor at registration; the CIB does not publish a fixed exam-fee figure (omitted here rather than guessed). Active contractors must also file a $5,000 corporate surety bond and carry general liability insurance of at least $50,000 (OAC 158:50-9-2(b), 158:50-5-3). Scope (OAC 158:50-5-2(b)(4)): install, alter, modify, service, maintain or repair a ventilation (duct) system and/or any cooling product/system/equipment (including process piping) and/or heating equipment (including process piping) and/or natural gas piping, process piping, refrigeration and sheet metal, with NO tonnage or Btu limit.
Limited Mechanical HVAC License (issued as Journeyman or Contractor)	Same experience/education standard as the Unlimited HVAC journeyman (three years, or a Committee-approved education substitution, or military-equivalent); contractor adds one year (OAC 158:50-9-1(b)).	Journeyman trade exam for the HVAC category; contractor also passes the business/law portion (OAC 158:50-9-1(c)).	Same CIB fee schedule as the Unlimited HVAC license (journeyman $25 + $50; contractor $30 + $300), plus the vendor exam fee and, for active contractors, the $5,000 bond and $50,000 general-liability insurance. Scope (OAC 158:50-5-2(b)(1)): a ventilation (duct) system and/or any cooling product/system/equipment (including process piping) with a cooling capacity of no more than twenty-five (25) tons, and/or all heating equipment (including process piping) with a heat input of no more than 500,000 Btu/h per appliance, and/or natural gas piping, refrigeration and sheet metal.
Refrigeration License (issued as Journeyman or Contractor)	Three years of verifiable experience in the refrigeration category (or a Committee-approved education substitution, or military-equivalent) for the journeyman; contractor adds one year (OAC 158:50-9-1(b)).	Journeyman trade exam for the refrigeration category; contractor also passes the business/law portion.	Journeyman $25 + $50; contractor $30 + $300, plus vendor exam fee and (active contractor) bond/insurance. Scope (OAC 158:50-5-2(b)(7)): install, alter, modify, service, maintain or repair refrigeration products, systems or equipment, including the process piping.
Sheet Metal License (issued as Journeyman or Contractor)	Three years of verifiable experience in the sheet metal category (or a Committee-approved education substitution, or military-equivalent) for the journeyman; contractor adds one year (OAC 158:50-9-1(b)).	Journeyman trade exam for the sheet metal category; contractor also passes the business/law portion.	Journeyman $25 + $50; contractor $30 + $300, plus vendor exam fee and (active contractor) bond/insurance. Scope (OAC 158:50-5-2(b)(8)): install, alter, modify, service, maintain or repair all ferrous and nonferrous duct and exhaust systems.
Natural Gas Piping License (issued as Journeyman or Contractor)	Three years of verifiable experience in the natural gas piping category (or a Committee-approved education substitution, or military-equivalent) for the journeyman; contractor adds one year (OAC 158:50-9-1(b)).	Journeyman trade exam for the natural gas piping category; contractor also passes the business/law portion.	Journeyman $25 + $50; contractor $30 + $300, plus vendor exam fee and (active contractor) bond/insurance. Scope (OAC 158:50-5-2(b)(5)): install, alter, modify, service, maintain or repair all natural gas piping. Note: under 59 O.S. 1850.10(A), gas piping, floor furnaces/wall heaters and radiant-floor heating may lawfully be performed either by a mechanical licensee OR by a licensed plumbing contractor/journeyman plumber.
Limited Residential Installer / Limited Residential Journeyman (journeyman-type licenses)	Limited Residential Installer: at least 18 years old with one (1) year of verifiable experience in the category, OR a 250+ hour Committee-approved vocational diploma plus 6 months, OR military-equivalent (OAC 158:50-5-2(b)(3)). Works only while employed or supervised by a mechanical contractor; no more than three apprentices per installer.	Installer examination per OAC 158:50-9-1(c).	Journeyman fee schedule: $25 application + $50 initial license; $75 renewal. Scope (OAC 158:50-5-2(b)(2)-(3)): install complete new systems for detached one- or two-family dwellings and townhouses not more than three stories high with a separate means of egress, limited to 5-ton or less cooling and 150,000 Btu/h or less heating plus related accessories (humidifiers, filtering systems, kitchen vent hoods, exhaust fans, clothes dryer vent exhausts). EXCLUDES fuel gas piping, welding, soldering, brazing, final connection of refrigerant lines and final electrical connection.

Who does NOT need this license — exemptions

Oklahoma licenses HVAC as a MECHANICAL credential held by the individual (mechanical apprentice, journeyman or contractor) under the Mechanical Licensing Act (59 O.S. 1850.1 et seq.); there is no blanket ‘works for a licensed contractor, needs nothing’ exemption - an employed worker must at minimum hold a mechanical apprentice registration (59 O.S. 1850.7 and 1850.9). Two carve-outs sit in the DEFINITIONS: ‘mechanical work’ (59 O.S. 1850.2(10)) is defined as installation, maintenance, repair or renovation of heating, exhaust, cooling, mechanical refrigeration, ventilation, gas-piping and process-piping systems ‘other than minor repairs to such systems,’ so minor repairs fall outside the licensed scope by definition. The Act’s express provisions are in 59 O.S. 1850.10. Subsection A first fixes the Act’s reach: ‘No person shall install, replace or repair gas piping … floor furnaces or wall heaters … [or] any radiant-floor heating systems unless such person is licensed under the Mechanical Licensing Act or is licensed as a plumbing contractor or journeyman plumber pursuant to the laws of this state’ - i.e., a licensed plumber may also lawfully do that work. Subsection B: ‘The Mechanical Licensing Act shall not apply to: 1. A person who is the property owner of record, or his or her authorized representative, when performing minor repair which shall include, but not be limited to, cleaning, adjusting, calibrating and repair of mechanical system parts and the replacement of fuses and room thermostats, and other minor repairs which shall not include any repair which could violate the safe operation of the equipment; 2. The installation of portable, self-contained, ductless air conditioners or heaters; 3. The setting or connecting of detached air conditioning units which utilize flexible ductwork on a manufactured home …; 4. Any permanent employee of a manufacturing facility, whether owned or leased, while performing mechanical work on the premises of such facility[, provided such] work … shall not violate any manufacturer specification or compromise any health or safety standards and practices …; 5. The service, repair and installation of boilers, pressure vessels and welded steam lines which are subject to the jurisdiction of the Commissioner of Labor pursuant to the … Boiler and Pressure Vessel Safety Act; or 6. Employees of state-owned institutions doing maintenance to state-owned facilities which does not violate manufacturer specifications nor compromise health or safety standards and practices.’ Subsection C: the licensing requirements ‘shall not apply to public utilities, public service corporations, intrastate gas pipeline companies, gas gathering pipeline companies, gas processing companies, rural electric associations, or municipal utilities and their subsidiaries during work on their own facilities or during the performance of energy audits, operational inspections, minor maintenance, or minor repairs for their customers or on their own equipment.’ Subsection D exempts ‘contractors, the contractor’s employees, employees of chemical plants, gas processing plants, intrastate gas pipelines, gas gathering pipelines and petroleum refineries during work on their own facilities or during the performance of operational inspections, mechanical work, maintenance, or repairs on their own equipment’ (subject to the same manufacturer-spec / health-and-safety proviso). Subsection E exempts ’employees of research facilities during work on their own facilities or during the performance of operational inspections, mechanical work, maintenance, or repairs on their own equipment used solely for research purposes when such items of equipment require one or more details of construction not covered by normally used national codes and standards …’ Finally, 59 O.S. 1850.12 is not an exemption from licensure but preserves LOCAL authority: a political subdivision may appoint inspectors, make inspections, require permits and fees for mechanical work, and ‘may require contractors to register within their jurisdiction’ - so a state mechanical license does not displace a city’s separate permit or registration.

Fees

Fees are set by rule (OAC 158:50-9-2(b)) and the license is annual. Mechanical journeyman: $25 application + $50 initial license = $75 to obtain; $75 annual renewal; $25 renewal late fee. Mechanical contractor: $30 application + $300 initial license = $330 to obtain; $200 annual renewal; $100 renewal late fee. Mechanical apprentice: $5 application + $20 registration = $25; renews annually. A separate examination fee is paid to the Board’s approved third-party testing vendor at registration - the CIB does not publish a fixed exam-fee figure, so no dollar amount is stated here. Active mechanical contractors must additionally file a $5,000 corporate surety bond and carry general liability insurance of at least $50,000 (OAC 158:50-5-3); inactive contractors pay only the annual renewal fee and are exempt from bond and insurance. A one-time, one-year low-income fee waiver is available under OAC 158:1-3-13(c).

Exam

Oklahoma requires the individual applicant to pass the examination(s) approved by the Committee of Mechanical Examiners for the license type and category (59 O.S. 1850.6; OAC 158:50-9-1(c)). A mechanical journeyman passes the trade examination for the category sought (for HVAC, the HVAC/R examination); a mechanical contractor must pass BOTH a trade portion and a business/law portion. Passing scores are set by the Committee. After the application is approved, the applicant is provided the contact information of the Board’s approved third-party testing vendor to schedule the date, time and location; the vendor’s exam fee is paid separately and is not published by the CIB as a fixed figure (omitted here rather than guessed). Retake limits apply (no retake within 30 days of the first failure or 90 days of the second or subsequent failure). Several categories substitute an external certification for the CIB exam: Ground Source Piping (Committee-approved certification), Medical Gas (certification to the NFPA 99 standard or from a Committee-approved organization), Petroleum Refinery Process Piping (industrial pipefitter certification) and Fueled Hearth Product Work (NFI certification in gas, wood or pellets).

Renewal & continuing education

Annual. A mechanical journeyman or contractor license is issued for no more than one (1) year and expires on the last day of the licensee’s birth month (59 O.S. 1850.8(B)); a mechanical apprentice registration expires one year after its date of registration. Renewal requires the renewal fee, completion of at least six (6) hours of continuing education every three (3) years (OAC 158:50-9-7), and - for active contractors - a current $5,000 bond and $50,000 general-liability insurance. A license renewed more than 30 days after expiration requires a late fee (journeyman $25, contractor $100); no late fee applies to a license that expired during the licensee’s military service if renewed within one year of discharge. A contractor may renew as an inactive contractor (dropping bond and insurance, regulated as a journeyman) or, permanently, as a journeyman. 6 hours of continuing education every 3 years (the 36 months preceding the license expiration date), for both journeymen and contractors. The course and instructor must be approved in advance by the Committee of Mechanical Examiners, and the material must cover codes and revisions adopted by the OUBCC and other approved trade/safety subjects (OAC 158:50-9-7). A licensee is exempt from the CE requirement for three (3) years from the date they passed their current licensing exam. (EPA Section 608 refrigerant-handling certification is a separate FEDERAL credential and is not part of CIB renewal.)

How to apply

Applications are handled by Oklahoma Construction Industries Board (CIB), Committee of Mechanical Examiners. Start at the official application page .

Frequently asked questions

Do you need a license to do HVAC work in Oklahoma?

Yes. HVAC work is ‘mechanical work’ under the Mechanical Licensing Act (59 O.S. 1850.1 et seq.), and 59 O.S. 1850.7 makes it unlawful to engage in mechanical work as a journeyman or contractor without an appropriate Construction Industries Board (CIB) license. Oklahoma licenses the INDIVIDUAL - as a mechanical apprentice (registered), a mechanical journeyman, or a mechanical contractor - not a business-only registration; a mechanical firm must simply have a licensed contractor associated with it. Unlike some states, Oklahoma has no blanket exemption for an employee of a licensed contractor: an employed technician must at least hold a mechanical apprentice registration and work under a journeyman’s or contractor’s supervision.

What is the Oklahoma HVAC license actually called?

It is a CIB mechanical license issued in a category. The core HVAC category is ‘HVAC’ (the CIB also writes ‘HVAC/R’), issued as a Limited Mechanical HVAC license - cooling up to 25 tons and heating up to 500,000 Btu/h per appliance - or an Unlimited Mechanical HVAC license with no size cap. Related categories include Refrigeration, Sheet Metal, Natural Gas Piping, Process Piping, Ground Source Piping and Limited Residential. Each category is issued at the journeyman level and, one year of experience later, at the contractor level.

How much does an Oklahoma mechanical (HVAC) license cost?

A mechanical journeyman license is $25 application + $50 initial license ($75 to obtain), renewing at $75 a year. A mechanical contractor license is $30 application + $300 initial license ($330 to obtain), renewing at $200 a year. A mechanical apprentice registration is $5 + $20. On top of the CIB fee, an examination fee is paid separately to the Board’s third-party testing vendor (the CIB does not publish a fixed amount), and an active contractor must also carry a $5,000 surety bond and at least $50,000 in general liability insurance. A one-time low-income fee waiver is available.

What experience and exams does Oklahoma require?

A mechanical journeyman must be 18 or older with three years of verifiable experience in the category (or a Committee-approved education substitution, or equivalent military experience); Oklahoma-earned hours count only if the applicant was a registered apprentice while earning them, and one year equals 2,000 hours. The journeyman passes the trade exam for the category. A mechanical contractor needs the journeyman requirements plus one additional year of experience and must pass both a trade portion and a business/law portion of the contractor exam. Exams are scheduled with the CIB’s approved third-party testing vendor after the application is approved.

Does Oklahoma require continuing education for a mechanical (HVAC) license?

Yes. No journeyman or contractor license is renewed without at least six (6) hours of Committee-approved continuing education every three (3) years - the 36 months before the license expiration date (OAC 158:50-9-7). A newly licensed person is exempt from CE for three years from the date they passed their licensing exam. Licenses are annual and expire on the last day of the licensee’s birth month. (EPA Section 608 refrigerant certification is a separate federal requirement, not part of CIB renewal.)

Can a homeowner or handyman do small HVAC jobs without a license in Oklahoma?

Only narrowly. The Mechanical Licensing Act does not apply to a property owner (or their authorized representative) performing ‘minor repair’ - cleaning, adjusting, calibrating, repairing mechanical parts, and replacing fuses and room thermostats - but expressly NOT any repair that could violate the safe operation of the equipment (59 O.S. 1850.10(B)(1)). Installing portable, self-contained, ductless air conditioners or heaters is also exempt (1850.10(B)(2)), as is connecting a detached AC unit with flexible ductwork on a manufactured home (1850.10(B)(3)). Beyond those, HVAC installation and replacement require a licensed mechanical journeyman or contractor - and a city may still require its own permit and local registration (59 O.S. 1850.12).

See every license and certification LicensingAtlas covers in Oklahoma.

Sources & verification

Last verified against these sources: July 24, 2026.

LicensingAtlas states licensing and certification requirements categorically from official sources. It is a reference, not legal or career advice, and requirements change frequently — confirm details with the issuing board before you act.