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Radon guides

Plain-English guides to testing your home for radon, reading the result, and fixing it, checked against EPA, CDC and state health department guidance.

Testing

How to testShort-term vs long-term, where to place the kit, and what to do with the number.Radon levelsWhat 2, 4 or 10 pCi/L means, with a calculator for your number.Radon test kitsCharcoal, alpha track or digital monitor: which one fits your situation.

Fixing radon

How mitigation worksThe parts of a radon system, the types, and how to tell it's working.Mitigation costState health department price ranges, what drives cost, and a quote checker.

Buying or selling

Buying or sellingTesting during inspection, negotiating a high result, and seller tips.