Radon Testing in Massillon, OH
4 licensed companies based in Massillon · state license records checked November 1, 2026
Radon testing companies in Massillon
Listed alphabetically, with companies based in Massillon first. We do not rank companies, and no one pays to appear here. How we verify · How we make money
- License verifiedChecked Nov 1, 2026
Patriot Radon Specialists LLC
Massillon, OH- Radon mitigation
Ohio DOH license RC431 · active until Sep 9, 2028 · Ohio DOH license RS693 · active until Sep 8, 2028 · Ohio DOH license RS717 · active until Apr 11, 2027
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