Kentucky to Ohio: master HVAC technician license reciprocity
Ohio has a reciprocity agreement with Kentucky: a Kentucky master HVAC technician can get a Ohio license without retaking the trade exam.
Reference only, not legal advice. Rules change; confirm with the licensing board before you apply. Full disclaimer.
Reciprocity with Kentucky (HVAC and Refrigeration)
A signed state-to-state agreement. The trade exam is waived; you apply, prove your history, and pay the fee.
OCILB lists Kentucky for Electrical, HVAC and Refrigeration reciprocity without a Business and Law exam flag. An applicant who currently holds a Kentucky Master HVAC Contractor license obtained by passing Kentucky's examination receives the Ohio HVAC (or Refrigeration) Contractor license without examination; Kentucky licenses obtained by grandfathering cannot reciprocate. The applicant files OCILB form DIC 3529 marked HVAC and/or RE (separate application and $25 fee per trade), has the Kentucky Department of Housing, Buildings and Construction complete the Reciprocity Verification of Licensure under state seal (the form records the Kentucky HM master and HJ journeyman license numbers, status, exam score and discipline history), provides a $500,000 certificate of liability insurance naming OCILB, and assigns the license to a contracting company. Kentucky's HVAC law (KRS 198B.666) provides the mirror-image reciprocity for Ohio licensees.
The OCILB Kentucky page's eligibility text is written for the electrical trade (master electrician plus contractor license); for HVAC the form and verification sheet refer to the Kentucky HVAC master (HM) license. Whether OCILB also requires a Kentucky journeyman (HJ) number was not stated.
At a glance
- Trade exam
- Waived
- Law / code exam
- Not required
- Agreement
- Active
What you must already have
- Your Kentucky license must have been obtained by examination, not by reciprocity or grandfathering.
- Your Kentucky license must be active and in good standing.
- You must have no disciplinary action or unresolved complaints on your record.
What you'll do to get licensed in Ohio
- 1Application fee. Pay the application fee ($25). Reciprocity application fee, non-refundable, per trade (form DIC 3529).
- 2Insurance. Carry the required insurance ($500,000). Certificate of liability insurance with complete operations coverage of at least $500,000, certificate holder OCILB.
- 3Other. Reciprocity Verification of Licensure completed under seal by the Kentucky board, including exam score.
- 4Other. Assignment of the license to a contracting company (R.C. 4740.01).
- 5Other. 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 $25, excluding exam-vendor fees, bonds, and insurance.
What you'll need to buy or arrange
Liability insurance
Some states require proof of general liability or workers' compensation coverage at licensing time.
- Insurance · $500,000
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.
- Other · if applicable
How Ohio licenses master HVAC technicians
Ohio master HVAC technician · “HVAC Contractor / Refrigeration Contractor (OCILB state license)”
Statewide license
Issued by Ohio Construction Industry Licensing Board (OCILB), Ohio Department of Commerce
Ohio has no license called 'master HVAC'; its top person-held HVAC credential is the statewide HVAC Contractor license (with a separate Refrigeration Contractor license for refrigeration work) issued by the Ohio Construction Industry Licensing Board (OCILB) to an individual who qualified by examination (R.C. 4740.01(A)), who then assigns it to a contracting company. Other states' reciprocity forms pair this license with their master HVAC or mechanical contractor licenses, so it is treated here as the master level. A new applicant must be 18, a citizen or legal alien, have five years as a tradesperson in the trade immediately before applying (or be an Ohio registered engineer with three years of construction business experience), pass BCI and FBI background checks, pass both sections of the PSI-administered examination (trade and Business & Law), carry $500,000 of contractor liability insurance in one company name, and pay a $25 application fee and $25 license fee per trade; licenses expire annually and renew with 8 hours of continuing education (24 for three-year renewals). OCILB's published reciprocity list covers HVAC licenses from Alabama, Kentucky, Louisiana, Mississippi, South Carolina, Tennessee and West Virginia (refrigeration from Alabama, Kentucky, Louisiana, Mississippi and Tennessee), with the Ohio Business and Law exam still required for Louisiana, Mississippi, South Carolina and Tennessee licensees. Federal EPA Section 608 certification is required of anyone handling refrigerants but is not part of the OCILB application.
Common questions
- Do I have to take the Ohio master HVAC technician exam if I'm licensed in Kentucky?
- No. The trade exam is waived on this path under the agreement with Kentucky.
- What does it cost to get a Ohio master HVAC technician license from Kentucky?
- Published fees on this path total $25, not counting exam vendor fees or bonds.
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
- OCILB - Contractors & Contracting Companies (five licensed trades, requirements, reciprocity list) · Ohio Department of Commerce, Division of Industrial Compliance · Agency Page · verified September 17, 2026
- OCILB Examination Application (form DIC 3524, PDF) · Ohio Construction Industry Licensing Board · Form · verified September 23, 2026
- OCILB - Testing Application (form DIC 3524) · Ohio Department of Commerce, Division of Industrial Compliance · Agency Page · verified September 15, 2026
- OCILB - Reciprocity Application - Kentucky (EL, HV, RE) · Ohio Department of Commerce, Division of Industrial Compliance · Agency Page · verified September 15, 2026
- OCILB Kentucky Reciprocity Application and Reciprocity Verification of Licensure (PDF) · Ohio Construction Industry Licensing Board · Form · verified September 15, 2026
- Ohio Revised Code 4740.01 - Construction industry licensing board definitions · R.C. 4740.01 · Ohio Legislative Service Commission · Statute · verified September 17, 2026
- Ohio Revised Code 4740.06 - License application; qualifications for examination · R.C. 4740.06(B), (C), (E), (F), (G), (H) · Ohio Legislative Service Commission · Statute · verified September 23, 2026
- Ohio Revised Code 4740.08 - Reciprocity · R.C. 4740.08 · Ohio Legislative Service 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.