Ohio
HVAC in Ohio
96 HVAC companies in its metro areas within about 25 to 35 miles of Cincinnati and Columbus and Cleveland and Dayton and Toledo – plus how Ohio licenses HVAC work.
Metro areas
Ohio cities we cover
Ohio rules
Do HVAC contractors need a license in Ohio?
How Ohio licenses HVAC work
HVAC contractors are licensed by the state.
Who licenses: Ohio Construction Industry Licensing Board (OCILB), Ohio Department of Commerce
License types: Heating, Ventilating, and Air Conditioning (HVAC) Contractor, Refrigeration Contractor, Hydronics Contractor.
Companies: Under Ohio Revised Code Chapter 4740 (section 4740.13), no one may act as or claim to be an HVAC or refrigeration contractor unless they hold or have been assigned an OCILB license, which requires passing the PROV licensing exam.
Check a license: elicense7.com.ohio.gov
Look the company up on the Ohio Department of Commerce eLicense license lookup and confirm an active HVAC or refrigeration contractor license before signing.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
Sources: com.ohio.gov, codes.ohio.gov, codes.ohio.gov, com.ohio.gov. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – a new furnace, heat pump or air conditioner usually does.
Questions
Ohio HVAC questions
Do HVAC contractors need a license in Ohio?
Ohio licenses HVAC contractors statewide through the Ohio Construction Industry Licensing Board (OCILB), Ohio Department of Commerce. You can check a license at elicense7.com.ohio.gov.
Where in Ohio do you list HVAC companies?
In Ohio: Cincinnati (21), Columbus (19), Cleveland (22), Dayton (22), Toledo (20). Each city page lists companies based within about 25 miles – 35 in smaller metro areas – whose own website names that city or nearby towns.
Do technicians need EPA certification?
Yes, in every state: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification. A state or city license is a separate requirement.
How do I get an HVAC company listed in Ohio?
HVAC companies can add their business free. We check every listing against the business’s own website.
Neighboring states: Michigan · Indiana · Kentucky · West Virginia · Pennsylvania.
Request an HVAC company
Ask us to find an HVAC company in Ohio
Tell us the job and your ZIP code. We pass it to listed companies that serve your area.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.