Direct answer
Short-term (48-hour) tests work for real-estate timelines and initial screening. Long-term (90-day) tests give the most accurate average exposure. We use both depending on your situation.
Authoritative sources
- US EPA ↗
Cincinnati and surrounding counties sit in EPA Radon Zone 1 — the highest-risk classification.
- EPA Citizen's Guide to Radon ↗
EPA recommends mitigation above 4.0 pCi/L and consideration of mitigation between 2.0 and 4.0 pCi/L.
- Ohio Department of Health ↗
Ohio Radon Program guidance on testing, mitigation, and contractor licensure.
Related questions
- How much does radon mitigation cost in Cincinnati? →
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- Is your radon system warrantied? →
- Will a radon system increase my utility bills? →
- Will I hear the radon fan? →
- Do all Cincinnati homes need a radon mitigation system? →
Ready to get started in Cincinnati?
We connect Greater Cincinnati homeowners with NRPP-credentialed radon mitigators in our partner network. Mon–Sat 8am–7pm.