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Radon professionals in Ohio

Who tests and fixes radon in Ohio, what Ohio's own program says about licensing, and how to check a credential before you hire.

Updated October 2, 2026

Short answer

Radon professionals in Ohio, in brief

No business that Ohio itself licenses or certifies is listed on Radon411 yet. Ohio's radon program says the state licenses or certifies radon professionals.

6 businesses with an address in Ohio appear in a separate list because another state's registry lists them. That does not mean Ohio licenses them.

The rule

Does Ohio license radon professionals?

Yes. Ohio's radon program page, checked on September 25, 2026, says:

This program licenses companies and persons directly involved with the radon testing and mitigation industry.
Radon Education and Licensing Program, read September 25, 2026

EPA's state contacts page lists Ohio among the states with radon credentialing programs. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.

Radon411 reads no licensing list for Ohio; Ohio's radon program is the place to ask who works there.

State program

Ohio's radon program

The state's own radon program: the place to ask who may work in the state.

Radon Education and Licensing Program

Ohio Department of Health

Its page covers free or discounted test kits and who may test and fix radon in the state.

Phone 614-728-0272 · Email indoor.radon@odh.ohio.gov

Visit the program's page (opens in a new tab)Read September 25, 2026

The directory

Radon professionals listed for Ohio

None that Ohio licenses yet. The businesses below have an address here and another state licenses them.

By city

3 cities in Ohio with a listed business address.

No business licensed by Ohio is listed here yet. Where Ohio licenses radon professionals, its own list is the complete one.

Located in Ohio, licensed by another state

These businesses have an address in Ohio, and another state's registry lists them. That does not mean Ohio licenses them: check with Ohio's radon program before hiring one for work here.

6 professionals located in Ohio and listed by another state.

On this page: 4 testing and mitigation, 2 testing

Testing and mitigation (4)

Testing (2)

Nearby

Listed professionals in states next to Ohio

A business licensed in a neighboring state is licensed there, not necessarily in Ohio. Check Ohio's rule above before you hire one.

Before you hire

How to check a credential in Ohio

  1. Ohio's own list

    Start with Ohio's radon program. Licensing is done by the state, and most states can give you a list of radon service providers working there.

  2. NRPP's search

    The National Radon Proficiency Program's search finds its Certified Mitigation Specialists and Certified Measurement Professionals by area, by name, or by the 6-digit NRPP ID number a professional can give you.

  3. NRSB's search

    The National Radon Safety Board's search finds a professional in your area, or confirms that a named professional is NRSB certified.

  4. The ID card

    The programs usually issue a photo ID card showing the holder's qualifications and its expiry date. Ask to see it, and if in doubt, check with the body that issued it.

Hiring

Hiring in Ohio

A tester

Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.

What a professional test involves

A mitigation contractor

Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.

How to choose a contractor

Questions

Common questions about Ohio

Does Ohio require radon professionals to be licensed?

Yes. Ohio's radon program page, checked on September 25, 2026, says.

EPA's state contacts page lists Ohio among the states with radon credentialing programs.

This program licenses companies and persons directly involved with the radon testing and mitigation industry.
How do I find a certified radon mitigator in Ohio?

No business is listed for mitigation in Ohio on Radon411 yet.

Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.

How to choose a mitigation contractor

Who tests for radon in Ohio?

No business is listed for radon measurement in Ohio on Radon411 yet.

A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.

What a professional radon test involves

Does Ohio offer free or discounted radon test kits?

Radon Education and Licensing Program's page, checked on September 25, 2026, says:

Free radon test kits are available for Ohio homeowners.

Free and discounted test kits by state

How current are the Ohio listings?

Radon411 reads no licensing list for Ohio; Ohio's radon program is the place to ask who works there.

Is every business on this page licensed in Ohio?

No listing here is a license. The first list holds businesses Ohio's own registry lists, or that confirmed their own listing; each card names its source.

6 businesses with an address in Ohio appear in a separate list because another state's registry lists them. That does not mean Ohio licenses them.

No business pays to be listed, labelled or placed higher here, and Radon411 sells no leads. How listings are verified. Run a radon business in Ohio? Claim your listing.

Next steps

Where to go next