Radon Testing in Ohio
474 licensed companies across Ohio · state license records checked November 1, 2026
Radon Testing by city
- Columbus, OH103 companies
- Cleveland, OH91 companies
- Cincinnati, OH57 companies
- Toledo, OH10 companies
- Akron, OH53 companies
- Dayton, OH33 companies
- Canton, OH28 companies
- Youngstown, OH13 companies
- Kettering, OHnone listed yet
- Beavercreek, OH3 companies
- Warren, OH2 companies
- Massillon, OH4 companies