Radon Testing in Chicago, IL
216 licensed companies in the Chicago area · state license records checked November 1, 2026
Radon testing companies in Chicago
Listed alphabetically, with companies based in Chicago first, then 195 elsewhere in the Chicago area. We do not rank companies, and no one pays to appear here. How we verify · How we make money
- License verifiedChecked Nov 1, 2026
WIN Home Inspection
Wonder Lake, IL- Radon testing
IL IEMA license RNI2008205
- License verifiedChecked Nov 1, 2026
WIN Home Inspection
Wonder Lake, IL- Radon testing
IL IEMA license RNIT2019223
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