Does an HVAC contractor need a licence in Ohio?
Yes. Ohio requires HVAC contractors doing this kind of work to hold a state licence, separate from any local permit or federal refrigerant certification. The licence covers the contractor's qualification to do the work, not any single job.
What the state licence covers, and what it does not
Ohio licenses HVAC contractors at the state level, and the licence covers the contractor's qualification to design, install or service heating and cooling equipment. It's tied to the business or to a qualifying individual within it, not to any single house or job. Holding the licence means the state has reviewed the contractor's qualifications for this trade specifically.
What the licence does not cover is everything else that goes into a job. It doesn't confirm insurance coverage, guarantee workmanship, or set the price of a repair. It also doesn't replace a local permit or the separate certification required to handle refrigerant, both of which sit alongside it rather than under it.
Where the local permit sits instead
A mechanical permit is a separate, local requirement issued by the city or county where the work happens, not by the state. It's tied to the specific job, such as replacing a furnace or adding ductwork, and it triggers an inspection once the work is done. A contractor can hold a valid state licence and still need a permit for the job in front of them.
The permit and the licence answer different questions. The licence asks whether the contractor is qualified to do this kind of work at all. The permit asks whether this particular job, at this particular address, was done and inspected. Columbus homeowners can expect both to come up on most equipment replacements.
The federal refrigerant certification, which is separate again
Anyone who handles refrigerant, such as during an air conditioner or heat pump repair, needs a federal certification under EPA rules. This is separate from both the state licence and the local permit, and it applies to the individual technician handling the refrigerant rather than to the company as a whole.
The certification exists because refrigerant is regulated as a substance, not because the job itself needs extra oversight. A technician can be fully licensed at the state level and still need this certification specifically to open a sealed refrigerant system. It's worth asking whether the technician doing the work holds it, not just whether the company is licensed.
How to look a licence up yourself
Ohio maintains a public way to check whether a contractor holds an active state licence, and it's worth using before you hire rather than taking a licence number on faith. Searching by the business name or the licence number will show whether it's current and in good standing.
Local permit records are usually a separate lookup, held by the city or county rather than the state, so a state licence check won't show you whether a specific past job was permitted and inspected. If that history matters to you, ask the contractor directly or check with the local building department.
What this directory has and has not checked
This directory lists what public sources say about a contractor. It does not independently confirm that a licence is active, that a permit was pulled, or that a refrigerant certification is current. Those are all things worth checking yourself before you hire, using the state and local systems built for that purpose.
Treat anything listed here as a starting point, not a verification. If a listing shows a verification label, ask what specifically it confirms, since a licence check, an insurance check and a permit check are three different things and none of them guarantee the other two.
Browse the directory of HVAC contractors. Each listing shows its verification status and the date it was last checked, so you can see how current the information is before you reach out.