Missouri to Kentucky: master HVAC technician license reciprocity
Missouri does not issue a statewide master HVAC technician license, so there is nothing to transfer. Here is Kentucky'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 without a reciprocity agreement (examination with experience credit)
Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.
A master HVAC, mechanical or HVAC contractor licensee from a state without a Kentucky reciprocity agreement applies on Form HVAC 1 as a new applicant. KRS 198B.658(1)(c)2 accepts two years engaged as a master HVAC contractor 'or equivalent thereof' in a jurisdiction other than Kentucky when shown by verifiable documentation, so an out-of-state contractor does not need Kentucky journeyman time; 815 KAR 8:010 Section 5 lists a copy of a current out-of-state master HVAC contractor license or equivalent among the acceptable proofs (or documentation of the work where the state does not license), and one year of experience means at least 1,500 hours in a continuous twelve-month period. The applicant must pass the Master HVAC examination with at least 70%: it is a single open-book exam covering codes, standards and practices together with the law and regulation of the HVAC business, offered by Prov ($80) or by the department on Form HVAC-4 ($150); 815 KAR 8:010 Section 4(8) requires DHBC to recognize an equivalent examination on a showing that it covers the same material at the same level, and passing scores are valid for three years. The license issues only with a certificate of general liability insurance of at least $500,000 and property damage insurance of at least $300,000 from a Kentucky-licensed carrier naming DHBC as certificate holder (which a represented company may provide), the $250 twelve-month fee prorated by birth month ($145.83 to $375), and a passport photo; the application stays open one year.
Acceptance of a previously passed out-of-state or national master mechanical exam under Section 4(8) is at the department's discretion and no list of recognized exams is published. Exam fee: $80 per attempt with Prov; $150 for the department-administered exam registered on Form HVAC-4 (815 KAR 8:010).
At a glance
- Trade exam
- Required
- Law / code exam
- Not required
- Out-of-state hours
- Count toward eligibility
What you must already have
- You must document at least 3,000 hours of qualifying work experience.Two years as a master HVAC contractor or equivalent in another jurisdiction, two years as a journeyman under a master HVAC contractor, or two years as a licensed mechanical engineer (KRS 198B.658(1)(c)); a year is at least 1,500 hours in a continuous twelve-month period (815 KAR 8:010 Section 5(2)).
- At least 18 years of age and a United States citizen or resident alien authorized to work (KRS 198B.658(1)(a)-(b))
What you'll do to get licensed in Kentucky
- 1Application fee. Pay the application fee ($250). Master HVAC Contractor initial license fee for twelve months (Form HVAC 1), prorated by birth month to $145.83-$375.00; payable to Kentucky State Treasurer, non-refundable.
- 2Trade exam. Pass the destination's trade exam. Kentucky Master HVAC examination (codes, standards and practices plus HVAC business law and regulation), open book, 70% to pass; Prov computer-based exam or department-administered exam via Form HVAC-4.
- 3Exam fee. Pay the exam fee ($80). Prov examination fee per attempt (Candidate Information Bulletin); the department-administered master exam registered on Form HVAC-4 is $150.
- 4Insurance. Carry the required insurance ($500,000). General liability insurance of at least $500,000 plus property damage insurance of at least $300,000 from a carrier licensed by the Kentucky Department of Insurance, certificate naming DHBC (500 Mero Street, Frankfort) as certificate holder (KRS 198B.668).
- 5Other. Passport-sized color photograph taken within six months, employment history, and proof of experience (out-of-state license copy, W-2s, master's affidavit or DD 214).
- 6Other. 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 $330, 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
- Exam fee · $80
- Other · if applicable
Liability insurance
Some states require proof of general liability or workers' compensation coverage at licensing time.
- Insurance · $500,000
How Kentucky licenses master HVAC technicians
Kentucky master HVAC technician · “Master HVAC Contractor”
Statewide license
Kentucky's highest person-held HVAC credential is the statewide Master HVAC Contractor license issued by the Department of Housing, Buildings and Construction (DHBC) to an individual who qualified by examination; the master supervises and is primarily responsible for all HVAC work of the company he or she represents (a company may carry the required insurance in its name), and only a master or journeyman may purchase the statewide HVAC permits required since 2011. A new applicant must be 18, a citizen or authorized resident alien, and have two years as a licensed journeyman under a master HVAC contractor, two years as a master HVAC contractor 'or equivalent' in Kentucky or any other jurisdiction, or two years as a licensed mechanical engineer; pass the open-book Master HVAC exam, which covers codes and practices plus the law and regulation of the HVAC business, with at least 70% (Prov $80, or the department's exam for $150 on Form HVAC-4); carry general liability insurance of $500,000 and property damage insurance of $300,000 (KRS 198B.668) naming DHBC as certificate holder; and file Form HVAC 1 with a $250 twelve-month fee prorated by birth month ($145.83 to $375). Licenses renew annually at $250 with continuing education and current insurance. KRS 198B.666 authorizes licensure by reciprocity for states with substantially equal requirements that reciprocate, and Form HVAC 1 has a reciprocity checkbox requiring a letter of good standing; DHBC publishes no HVAC partner list, but Ohio's OCILB documents an active Kentucky-Ohio HVAC and refrigeration agreement. Federal EPA Section 608 certification is required for refrigerant work but is not verified by DHBC.
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 Kentucky master HVAC technician exam if I'm licensed in Missouri?
- Yes. Kentucky requires the trade exam on this path.
- What does it cost to get a Kentucky master HVAC technician license from Missouri?
- Published fees on this path total $330, not counting exam vendor fees or bonds.
- Do my Missouri work hours count in Kentucky?
- Yes. Documented out-of-state experience counts toward Kentucky's eligibility requirements.
- Does it work the other way, from Kentucky to Missouri?
- Not necessarily. Reciprocity is directed. Going from Kentucky 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
- DHBC - Division of Heating, Ventilation and Air Conditioning (HVAC) · Kentucky Department of Housing, Buildings and Construction · Agency Page · verified September 15, 2026
- DHBC Form HVAC 1 - Master HVAC Contractor License Application (April 2023), with fee chart · Kentucky Department of Housing, Buildings and Construction, Licensing Branch · Form · verified September 23, 2026
- DHBC Form HVAC-4 - HVAC Examination Registration Form (March 2022) · Kentucky Department of Housing, Buildings and Construction, Division of HVAC · Form · verified September 23, 2026
- DHBC - Licensing Information (forms and documents, eServices portal, Prov HVAC testing information, exam scheduling) · Kentucky Department of Housing, Buildings and Construction · Agency Page · verified September 23, 2026
- Commonwealth of Kentucky Division of HVAC - Candidate Information Bulletin (Prov, July 2020) · Kentucky Department of Housing, Buildings and Construction / Prov, Inc. · Other · verified September 23, 2026
- 815 KAR 8:010 - Licensing requirements for master HVAC contractors and journeyman HVAC mechanics · 815 KAR 8:010 Sections 1-5, 7, 8 · Kentucky Legislative Research Commission · Admin Rule · verified September 23, 2026
- KRS 198B.650 - Definitions for KRS 198B.650 to 198B.689 · KRS 198B.650(2), (10), (13), (15) · Kentucky Legislative Research Commission · Statute · verified September 15, 2026
- KRS 198B.658 - Qualifications for licensure and certification · KRS 198B.658(1)-(6) · Kentucky Legislative Research Commission · Statute · verified September 23, 2026
- KRS 198B.660 - Application; examinations; procedures · KRS 198B.660 · Kentucky Legislative Research Commission · Statute · verified September 23, 2026
- KRS 198B.666 - Reciprocity for licensees of other states · KRS 198B.666 · Kentucky Legislative Research Commission · Statute · verified September 15, 2026
- KRS 198B.668 - Insurance requirements · KRS 198B.668(1)-(4) · Kentucky Legislative Research Commission · Statute · verified September 23, 2026
Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.