Do HVAC contractors need a license in Ohio?
Yes. In Ohio, a contractor doing heating, ventilating and air conditioning or refrigeration work on a commercial construction project must hold an HVAC or refrigeration contractor license from the Ohio construction industry licensing board, though one-, two- and three-family homes are outside the state license. The chapter’s "construction project" excludes a residential building, which Ohio Rev. Code § 3781.06 defines as a one-, two- or three-family dwelling house and its accessory structures, so residential HVAC licensing is left to local governments. A licensed contractor may install and service control wiring of less than 25 volts for equipment related to its own license. This is Ohio Rev. Code §§ 4740.01, 4740.13, 3781.06.
| What | Ohio |
|---|---|
| HVAC license | State contractor license (commercial work only) |
Source
Ohio Rev. Code §§ 4740.01, 4740.13, 3781.06
Read the statute in the Ohio Revised Code (Ohio Legislative Service Commission): codes.ohio.gov.
Checked against the statute on November 13, 2026.
This is a summary of a published statute, not legal advice. Rules change, local ordinances can add to them, and the terms of a specific lease may differ. Check the citation and speak to a lawyer before acting.
How Seayora uses this rule
A contractor on Seayora keeps each license with its issuing state, its expiry date and the last four digits of its number, and the business is warned before one lapses — on the website and both phone apps. A customer finding a pro on Seayora sees whether a license is on file.
Guides on this rule
- Contractor License Requirements by State: Every Trade — Which states require a state license for electricians, plumbers, HVAC, general and home improvement contractors, with the statute for each.
Compare this rule in every state
More Ohio rules
- Does a landlord have to pay interest on a security deposit in Ohio?
- How long does a landlord have to return a security deposit in Ohio?
- How many days does a tenant get to pay late rent in Ohio?
- How much notice does a landlord have to give before entering in Ohio?
- How much notice does a landlord have to give before raising the rent in Ohio?
- How much notice must a landlord give to end a tenancy in Ohio?
- Can a landlord change the locks to force a tenant out in Ohio?
- How long does a tenant have to respond to an eviction case in Ohio?
- What are squatters’ rights in Ohio?
- What are the steps to evict a tenant for unpaid rent in Ohio?
- Is there rent control in Ohio?
- Can a landlord retaliate against a tenant for complaining in Ohio?
- Do you need a license to do electrical work in Ohio?
- Do you need a license to work as a plumber in Ohio?
- Can you use a transfer-on-death deed in Ohio?
- How does joint tenancy with right of survivorship work in Ohio?
- What is the deadline to file a mechanic’s lien in Ohio?
- Do contractors charge sales tax in Ohio?
- Is appliance repair taxable in Ohio?
- Is contractor labor taxable in Ohio?
- Every Ohio rule on one page
The same question in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho