Homeowner radon guide
Free and Low-Cost Radon Test Kits
Some state radon programs, health departments, universities, and nonprofit partners offer free or subsidized kits. Availability, eligibility, inventory, shipping, and laboratory fees can change.
Check your state page
RadonCostGuide identifies documented programs on state pages and flags offers that require current verification. Always confirm terms with the program before ordering.
Know what is included
Check whether laboratory analysis, return postage, expiration dates, instructions, and support are included. Follow the exact placement and timing directions.
Avoid misleading offers
A free device is not useful if required analysis is unclear or the seller makes unsupported health, diagnosis, or guaranteed-result claims.
What to do next
Use the cost estimator for planning or search for professionals whose recorded service area matches your ZIP code.
Content reviewed 2026-08-20. Educational information only; testing and a property-specific assessment are still required.