Missouri to Oklahoma: master HVAC technician license reciprocity
Missouri does not issue a statewide master HVAC technician license, so there is nothing to transfer. Here is Oklahoma's standard path for out-of-state applicants.
Your origin state does not issue a statewide license at this level, so there is no license to transfer. The destination's standard out-of-state path is shown; expect to meet it in full.
Reference only, not legal advice. Rules change; confirm with the licensing board before you apply. Full disclaimer.
Out-of-state master HVAC or mechanical contractor (all states; no published reciprocity partners)
Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.
No state has a published mechanical contractor reciprocity agreement with Oklahoma, so every out-of-state master HVAC technician or mechanical contractor uses the same route. Under OAC 158:50-9-4.1 an applicant from a state without a reciprocal agreement may request exam equivalency; if the Board has previously approved that jurisdiction's exam, the technical trade portion of the Oklahoma contractor exam is waived on a certified letter showing current good standing, the license category, a 70%+ exam score and no pending discipline, but the Mechanical Business and Law portion must still be passed. CIB does not publish the approved jurisdictions. Otherwise the applicant files the Application for Mechanical Examination with notarized experience affidavits and a copy of the out-of-state license, documents four years of verifiable experience in the category, pays $330, and must pass both portions of the contractor exam through PSI within three years of approval. To activate the license the contractor files a $5,000 bond and $50,000 general liability insurance with CIB; a contractor employed by a single business or public entity may instead file that employer's affidavit. Federal EPA Section 608 certification is required separately to handle refrigerants.
Even where a written contractor reciprocity agreement exists, OAC 158:50-9-6(e) grants only a journeyman license by reciprocity and requires the Oklahoma Business and Law portion before the contractor license issues; since no mechanical agreement is published, no agreement rows are recorded. Some third-party sites claim contractor reciprocity with Texas, Arkansas, Kansas or New Mexico, but no CIB page lists such an agreement.
At a glance
- Trade exam
- Required
- Law / code exam
- Required
- Out-of-state hours
- Count toward eligibility
What you must already have
- You must document at least 8,000 hours of qualifying work experience.Journeyman requirement of three years plus one additional year of verifiable experience in the mechanical trade, at 2,000 hours per year (OAC 158:50-9-1(b)(2)).
- Your Missouri license must be active and in good standing.
- You must have passed a licensing exam in Missouri that the destination considers comparable.
What you'll do to get licensed in Oklahoma
- 1Application fee. Pay the application fee ($30). Contractor application fee, non-refundable (OAC 158:50-9-2(b)).
- 2License fee. Pay the license or certificate fee ($300). Initial contractor license fee, submitted with the application; annual renewal $200.
- 3Trade exam. Pass the destination's trade exam. Technical trade portion of the Oklahoma HVACR Contractor exam (Unlimited or Limited) administered by PSI, 70% to pass; waived only under approved exam equivalency.
- 4Law / code exam. Pass a law, rules, or code exam. Oklahoma Mechanical Business and Law portion of the contractor exam (PSI), 70% to pass; never waived, including for reciprocity applicants.
- 5Exam fee. Pay the exam fee ($184). PSI fee of $92 per examination portion (two portions), non-refundable.
- 6Surety bond. Post a surety bond ($5,000). Continuous $5,000 corporate surety bond payable to the Oklahoma Construction Industries Board, filed before the license is activated (OAC 158:50-5-3(a)).
- 7Insurance. Carry the required insurance ($50,000). Commercial general liability insurance of at least $50,000 with CIB named as certificate holder (OAC 158:50-5-3(b)).
- 8Other. Compliance with workers' compensation insurance laws; the licensed contractor must be a permanent employee, owner, partner or officer of the mechanical firm responsible for its work.
- 9Other. Hold EPA Section 608 technician certification to handle refrigerant; federal law requires it, but it is not a condition of this state license (if applicable).
Published fees on this path total $514, excluding exam-vendor fees, bonds, and insurance.
What you'll need to buy or arrange
Exam preparation
Most boards contract PSI, Prov, or ICC for exams. Check which code edition the exam is written to before buying a prep course.
- Trade exam
- Law / code exam
- Exam fee · $184
- Other · if applicable
Surety bond
A license or contractor bond is bought from a surety, not the state. Price is a small percentage of the bond amount and depends on your credit.
- Surety bond · $5,000
Liability insurance
Some states require proof of general liability or workers' compensation coverage at licensing time.
- Insurance · $50,000
How Oklahoma licenses master HVAC technicians
Oklahoma master HVAC technician · “Mechanical Contractor (HVAC/R Unlimited or Limited)”
Statewide license
Issued by Oklahoma Construction Industries Board (CIB), Mechanical Division
Oklahoma has no 'master HVAC' license; its highest person-held HVAC credential is the Mechanical Contractor license, which CIB issues to an individual who passes the two-part contractor exam (technical trade and Mechanical Business and Law, 70% each, $92 per portion). This site maps the HVAC/R Unlimited (or Limited) Mechanical Contractor license to the master level. An applicant needs the journeyman qualifications plus one additional year, so four years (8,000 hours) of verifiable experience in the category, and pays $330 ($30 application plus $300 initial license). After passing, an inactive license issues until the contractor files a $5,000 corporate surety bond and a $50,000 commercial general liability certificate with CIB; an inactive contractor may work as a journeyman. Every mechanical firm must have a licensed contractor associated with and responsible for its work. OAC 158:50-9-6 lets CIB sign contractor reciprocity agreements, under which the applicant would still have to pass the Business and Law portion, but CIB publishes no mechanical partner states. Licenses renew annually ($200) with six hours of continuing education every 36 months.
Why Missouri has nothing to transfer
Missouri master HVAC technician
Licensed by cities and counties
Missouri does not issue a master HVAC license or a statewide mechanical contractor license; the Division of Professional Registration licenses no HVAC or mechanical profession, and unlike the electrical trade there is no voluntary statewide contractor license for HVAC. The master-level credential exists only at the local level under names that vary by jurisdiction: Springfield certifies Master Mechanical craftsmen (4 years as a certified journeyman or 10 years of experience, ICC exam, $50), Kansas City issues a mechanical certificate of qualification to the supervisor who qualifies a licensed mechanical contractor (Prometric or ICC exam, $60 application, $181 four-year renewal), and St. Louis County and the City of St. Louis license mechanical contractors through their boards of examiners. An out-of-state master HVAC license carries no state-level recognition in Missouri, and none of these jurisdictions publish a reciprocity path for it; Springfield accepts an identical ICC, Prometric, Experior or Block exam score in place of retesting and Kansas City may accept a comparable exam it deems equivalent. A master arriving from another state should expect to qualify in each jurisdiction separately and then obtain that jurisdiction's mechanical contractor license to pull permits. EPA Section 608 certification is a separate federal requirement.
How local licensing works in Missouri
How local licensing works. Missouri has no state HVAC license and no statute standardizing local HVAC licensing; each city or county sets its own master, supervisor and contractor requirements.
Springfield. Building Development Services certifies Master Mechanical craftsmen: 4 years as a certified journeyman in the trade or 10 years of satisfactory experience, documented on notarized employer forms and approved by the Building and Trades board; ICC master mechanical exam through Pearson Vue (about $125), 75% to pass; certification card $50 with $50 annual renewal. 'Reciprocation' applicants submit copies of their other-state licenses and an identical-exam score of 75% or better from Prometric, Experior, Block or ICC; otherwise they test.
Kansas City. City Planning and Development licenses mechanical contractors ($55 application, $181 issuance, $181 renewal every four years) whose scope covers heating, duct and ventilation systems, refrigeration maintenance, gas piping to burners and control wiring. Every licensed contractor must employ a full-time supervisor who holds a Kansas City certificate of qualification in the mechanical trade; the certificate requires an application with notarized references and a passing score from a recognized agency such as Prometric or ICC ($60 application, first four-year certificate free, $181 renewal), and the city may accept a comparable exam from another jurisdiction if it deems it equivalent or superior.
St. Louis County. The Board of Examiners for Mechanical Licensing certifies mechanical contractors (a certified contractor list is published) and requires a licensed mechanical contractor bond and, for some applicants, a financial responsibility bond; applications and renewals go through the Accela portal. Master-level exam and experience details are not published on the pages that could be opened.
City of St. Louis. The Mechanical Contractors Board of Examiners (Ordinance 62579, City Code 25.10) reviews each applicant's qualifications for a Mechanical Contractor's license issued by the Building Division; the license is required to pull mechanical permits for boilers, furnaces, exhaust systems and ventilation. Contractors also need the city's graduated business license.
Out-of-state holders. No reciprocity or endorsement path for another state's master HVAC license was found in any of these jurisdictions. The practical route is to present an identical ICC or Prometric master mechanical score where accepted (Springfield; Kansas City case by case), document experience, and apply for the local master certificate and contractor license in each jurisdiction where work will be performed.
Common questions
- Do I have to take the Oklahoma master HVAC technician exam if I'm licensed in Missouri?
- Yes. Oklahoma requires the trade exam on this path, plus a law or code exam.
- What does it cost to get a Oklahoma master HVAC technician license from Missouri?
- Published fees on this path total $514, not counting exam vendor fees or bonds.
- Do my Missouri work hours count in Oklahoma?
- Yes. Documented out-of-state experience counts toward Oklahoma's eligibility requirements.
- Does it work the other way, from Oklahoma to Missouri?
- Not necessarily. Reciprocity is directed. Going from Oklahoma to Missouri, the mechanism is not applicable.
Sources
- EPA Section 608 Technician Certification Requirements · 40 CFR Part 82, Subpart F (Clean Air Act §608) · U.S. Environmental Protection Agency · Other · verified September 15, 2026
- Oklahoma CIB - Active Contractor Requirements (bond and insurance) · Oklahoma Construction Industries Board · Agency Page · verified September 23, 2026
- Oklahoma CIB - Mechanical Industry · Oklahoma Construction Industries Board · Agency Page · verified September 23, 2026
- Oklahoma CIB - Mechanical Application Information and Application for Mechanical Examination · Oklahoma Construction Industries Board · Form · verified September 23, 2026
- Oklahoma CIB - Mechanical Contractor · Oklahoma Construction Industries Board · Agency Page · verified September 23, 2026
- Oklahoma CIB - Mechanical Forms · Oklahoma Construction Industries Board · Agency Page · verified September 23, 2026
- Oklahoma Mechanical Licensing Act, 59 O.S. §§ 1850.1 et seq. · 59 O.S. §§ 1850.6, 1850.7, 1850.8, 1850.8A · Oklahoma Construction Industries Board · Statute · verified September 23, 2026
- OAC Title 158, Chapter 50 - Mechanical Industry Regulations (permanent rules effective 10/1/2020) · OAC 158:50-5-2, 158:50-5-3, 158:50-9-1, 158:50-9-2, 158:50-9-4.1, 158:50-9-6, 158:50-9-7 · Oklahoma Construction Industries Board · Admin Rule · verified September 23, 2026
- State of Oklahoma Electrical, Mechanical, Roofing and Plumbing Examinations Candidate Information Bulletin (PSI) · PSI Services for the Oklahoma Construction Industries Board · Form · verified September 23, 2026
Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.