Ohio HVAC Contractor License

OCILB issues the state HVAC contractor license under R.C. 4740. Ohio does not have a state general contractor license, but HVAC — alongside electrical, plumbing, refrigeration, and hydronics — requires a state credential from the Ohio Construction Industry Licensing Board.

Who qualifies to sit for the exam

R.C. 4740.06 sets the eligibility conditions:

• at least 18 years old;
• U.S. citizen or legal resident with valid documentation;
• five years as a tradesperson in HVAC work immediately before filing — W-2s or IRS Schedule Cs accepted as experience documentation; and
• contractor's liability insurance of at least $500,000, including completed-operations coverage, in the applicant's name.

Two alternative pathways exist: Registered Professional Engineers with three or more years of construction industry experience may qualify under R.C. 4740.06, and veterans who performed substantially similar work in uniformed service may qualify by showing at least 3 of the preceding 5 years in that service (R.C. 4740.06(D)).

What the license costs to obtain and renew

Board fees set by OAC 4101:16-2-09:

• Exam application fee: $25 (paid to OCILB)
• License issuance fee: $25 (paid to OCILB after passing)
• Annual renewal: $60
• Triennial renewal (Compliant Contractor Program): $180

The testing vendor sets and collects the exam fee separately. File through the eLicense portal at elicense4.com.ohio.gov. OCILB-licensed contractors must display their license number as "OH LIC#-----" on vehicles, job sites, and business materials (OAC 4101:16-2-05).

Continuing education — 10 hours per year

OAC 4101:16-2-08 requires 10 classroom hours each year for HVAC licensees. OAC 4101:16-3-03 caps online or computer-based instruction at no more than half of required hours — so at least 5 of the 10 hours must be in-person classroom instruction.

What happens if renewal slips

OAC 4101:16-2-09 sets the late renewal fee at up to $120 (not more than double the $60 annual renewal fee per R.C. 4740.06). Separately, OAC 4101:16-2-08 specifies that CE not completed by the expiration date triggers automatic suspension without board action; the contractor has one year to reactivate before the license is automatically revoked.

Unlicensed HVAC contracting carries a civil penalty of up to $1,000 per violation per day (ORC 4740.16). A first offense is a minor misdemeanor; repeat violations are a fourth-degree misdemeanor.

License scope

ORC 4740.01 defines "construction project" as buildings and structures subject to Chapter 3781, excluding residential buildings and industrialized units. The OCILB HVAC contractor license covers commercial and non-residential HVAC work statewide — not residential service work. Note that EPA Section 608 certification is a separate federal requirement for technicians who handle refrigerants; it is not part of the Ohio OCILB licensing path.

Why this page matters

The residential scope exclusion is the key operational fact. Contractors who work only on residential HVAC are not performing "construction projects" under R.C. 4740.01 and are not covered by this license. Contractors moving into commercial or multi-family construction need the OCILB license before they can legally bid that work.

*Disclaimer: This information is provided for general reference only and does not constitute legal advice. Verify current requirements directly with the Ohio Construction Industry Licensing Board before applying or renewing.*