Missouri to Idaho: master HVAC technician license reciprocity
Missouri does not issue a statewide master HVAC technician license, so there is nothing to transfer. Here is Idaho'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.
Universal licensure for out-of-state HVAC contractors (all states)
Your out-of-state credentials give no advantage. You meet the destination's requirements from scratch.
With no reciprocity agreements, every out-of-state HVAC contractor or master is treated the same. Idaho Code 67-9409 obliges the HVAC board to license a person who holds a current, valid and unrestricted license in another state and demonstrates competency, on the standard application, fees and background checks, but lets the board require all or part of its examination; the board's rules require every contractor applicant to pass the board-designated exam and post a $2,000 bond, and DOPL publishes no HVAC-specific endorsement procedure. The realistic path is therefore the standard contractor application ($35), the PSI contractor exam ($75), the $2,000 compliance bond and the $225 license fee, with the out-of-state license and experience submitted as supporting evidence of competency.
Idaho's contractor exam covers business and law material (the DOPL Contractors' Business and Law Reference Manual is the allowed reference), so it is recorded as the trade exam rather than a separate law exam. Idaho Code 54-5013 sets a 24-month certificate term while DOPL's fee table shows a 3-year term for journeyman and contractor licenses; the fee table is the current practice. Whether the board waives any part of the exam under 67-9409 was not confirmed from an official page.
At a glance
- Trade exam
- Required
- Law / code exam
- Not required
- Out-of-state hours
- Count toward eligibility
- Typical processing
- About 30 days
What you must already have
- Your Missouri license must be active and in good standing.
What you'll do to get licensed in Idaho
- 1Application fee. Pay the application fee ($35). HVAC Contractor application processing fee (non-refundable).
- 2Trade exam. Pass the destination's trade exam. Idaho HVAC Contractor examination administered by PSI (board-designated exam, IDAPA 24.39.70.100.03).
- 3Exam fee. Pay the exam fee ($75). PSI examination fee.
- 4Surety bond. Post a surety bond ($2,000). HVAC contractor compliance bond of $2,000 (or an acceptable corporate industry group bond), effective for the certificate period.
- 5License fee. Pay the license or certificate fee ($225). Contractor license fee (3-year term; renewal $150, reinstatement $225).
- 6Other. EPA Section 608 technician certification (Type I/II/III/Universal) to handle refrigerants; federal, does not expire. Not listed on DOPL's HVAC pages.
Published fees on this path total $335, 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 · $75
- Other
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 · $2,000
How Idaho licenses master HVAC technicians
Idaho master HVAC technician · “HVAC Contractor”
Statewide license
Idaho has no master HVAC title; its highest credential is the HVAC Contractor certificate of competency, which is issued as a card in the name of the individual who passes the board's contractor examination and is therefore mapped here to the master level (an HVAC business must hold or employ a certificate holder, and Specialty Contractor and Limited Heating Specialty Contractor certificates cover gas piping, hearth appliances and oil furnaces). The applicant pays a $35 application fee, passes the PSI-administered HVAC contractor exam ($75, using the DOPL Contractors' Business and Law Reference Manual as a reference), provides a $2,000 compliance bond, and pays the $225 license fee; the certificate renews for $150 every three years. Idaho's HVAC board states that it has no reciprocal licensing agreement. A contractor licensed in another state may apply under Idaho's universal licensure statute (Idaho Code 67-9409), which requires the board to license a person with a current, unrestricted out-of-state license who demonstrates competency, but allows it to require the Idaho exam; since DOPL publishes no separate procedure for HVAC, applicants should expect to take the contractor exam. EPA Section 608 certification is required nationwide to handle refrigerants.
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 Idaho master HVAC technician exam if I'm licensed in Missouri?
- Yes. Idaho requires the trade exam on this path.
- What does it cost to get a Idaho master HVAC technician license from Missouri?
- Published fees on this path total $335, not counting exam vendor fees or bonds.
- Do my Missouri work hours count in Idaho?
- Yes. Documented out-of-state experience counts toward Idaho's eligibility requirements.
- How long does the application take?
- The board's published or typical processing time is about 30 days.
- Does it work the other way, from Idaho to Missouri?
- Not necessarily. Reciprocity is directed. Going from Idaho 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, 2026Federal requirement in every state: technicians who maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere must be certified (Type I small appliances, Type II high-pressure, Type III low-pressure, Universal). Apprentices under direct supervision are exempt. Certification does not expire; the core exam must be proctored for Universal certification. State HVAC boards commonly require it before licensure, but it is not itself a state license.
- Idaho Code 54-5007 - Requirements for Certificates of Competency · Idaho Code § 54-5007 · Idaho State Legislature · Statute · verified September 15, 2026The HVAC board prescribes rules for examination, qualification and certification of contractors, journeymen, apprentices and the specialty classes; HVAC contractors and specialty contractors must provide a $2,000 bond or an acceptable corporate industry group bond.
- Idaho Code 54-5009 - Classification of Competency (HVAC apprentice, journeyman, contractor, specialty contractor) · Idaho Code § 54-5009 · Idaho State Legislature · Statute · verified September 15, 2026Four classifications: apprentice (works only under a journeyman or contractor), journeyman (works in the employ and under direction of an HVAC contractor and has completed all trade-required classes), HVAC contractor (any business, partnership, company, firm or association installing, maintaining or repairing HVAC appliances or gas-fired equipment) and HVAC specialty contractor (gas piping, gas appliances, decorative gas-fired appliances).
- Idaho Code 54-5011 - Issuance of Certificate of Competency · Idaho Code § 54-5011 · Idaho State Legislature · Statute · verified September 15, 2026A certificate of competency in the form of a card bearing the holder's name, classification examined for and certificate number is issued to an applicant upon successful completion of the examination; this is why the contractor certificate is treated here as a person-held, exam-qualified credential.
- Idaho Code 67-9409 - Universal Licensure · Idaho Code § 67-9409 · Idaho State Legislature · Statute · verified September 15, 2026Every Idaho licensing authority must establish a procedure to license a person who holds a current, valid and unrestricted license in another state and demonstrates competency by methods the board determines; the applicant files the standard application, supporting materials and background checks, pays the same fees, and may be required to take all or part of the Idaho exam (no jurisprudence exam may be added); the board may compare scopes of practice and issue a limited license pending additional training. Enacted 2020, amended 2023.
- Idaho DOPL - Heating, Ventilation and Air Conditioning Board (program home and fees) · Idaho Division of Occupational and Professional Licenses · Agency Page · verified September 15, 2026License types: Apprentice, Journeyman, Contractor, Specialty Apprentice, Specialty Journeyman, Specialty Contractor and Limited Heating Specialty variants. Fees: application $35; Journeyman and Specialty Journeyman $150 license / $75 renewal / $150 reinstatement, 3-year term; Contractor and Specialty Contractor $225 / $150 / $225, 3-year term; Apprentice $10 (1 year); Specialty Apprentice $20 (2 years). Adopted codes include the 2018 IFGC and 2018 IMC. No reciprocity content.
- Idaho DOPL - HVAC Board FAQs · Idaho Division of Occupational and Professional Licenses · Faq · verified September 15, 2026'Q: Does Idaho have a Reciprocal Licensing agreement? A: No.' Also states that hours worked without a required license do not count toward the required on-the-job time, and that unlicensed HVAC work is subject to civil penalties.
- Idaho DOPL - HVAC Program Information and Exams · Idaho Division of Occupational and Professional Licenses · Agency Page · verified September 15, 2026Exams are administered by PSI for a $75 fee; candidates bring their own reference materials (the DOPL Contractors' Business and Law Reference Manual in a binder for the contractor exam); after passing, apply for licensure through the eDOPL portal. Links the board-approved apprentice program list.
- IDAPA 24.39.70 - Rules Governing Installation of Heating, Ventilation, and Air Conditioning Systems · IDAPA 24.39.70.100 · Idaho Division of Occupational and Professional Licenses · Admin Rule · verified September 15, 2026Section 100.02 journeyman: pass the board exam and either 8,000 hours of apprentice work experience plus 576 hours of board-approved instruction, or 16,000 hours of HVAC experience; may sit for the exam after either the 576 hours or the 16,000 hours. Section 100.03 contractor: pass the board-designated examination and provide a $2,000 compliance bond effective for the certificate period. Section 100.04 specialty journeyman (hearth appliances, non-duct-connected oil furnaces and their gas piping and venting): 2,000 hours of specialty experience plus the board exam or 60 hours of fuel gas education. No reciprocity or endorsement provisions. The redirect from adminrules.idaho.gov to files.dfm.idaho.gov was followed.
Verified dates are when a person last opened each source and confirmed the facts above. Cite the board, not us.