Two in five Minnesota homes exceed the EPA action level.
Radon is the second-leading cause of lung cancer in the United States and the leading cause among non-smokers. Minnesota is one of the highest-risk states in the country — 2 in 5 Minnesota homes test above the EPA action level of 4.0 pCi/L. A 48-hour continuous radon monitor test is the only way to know your home's level, and Minnesota statute requires disclosure on every residential sale.
InterNACHI
Schedule alongside your home inspection or as a standalone visit.
Lowest livable level of the home. Closed-house conditions begin.
Hourly radon readings logged continuously by the CRM device.
Device retrieved, data downloaded, results validated.
Written results within 24 hours with action recommendations if elevated.
Real-time pricing and availability across all 50 Minnesota cities.
Local pages with city-specific context, neighborhoods, and inspection profiles.
The EPA recommends mitigation at 4.0 pCi/L or higher. Minnesota Department of Health (MDH) follows this guidance. Levels above 4 pCi/L should be mitigated, and levels between 2 and 4 should be considered for mitigation.
Minimum 48 hours of measurement, with closed-house conditions for at least 12 hours before and during. Results delivered within 24 hours of device pickup.
Disclosure of known radon levels is required in residential real estate transactions. A test is the only way to disclose accurately.
A licensed radon mitigation contractor can install a sub-slab depressurization system. We don't do mitigation — we just measure honestly. Typical mitigation costs vary by home.
Yes. EPA recommends retesting every two years, after major renovations, or after a mitigation system is installed.
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