Our mission is to connect homeowners with independent licensed radon contractors. RadonFixers does not perform radon testing or mitigation installs. We are a referral and information service.

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Find a licensed radon tester

Pennsylvania: DEP certified testers (monthly PDF, by name or county)
Minnesota: MDH service-provider search (choose “Measurement”)
Illinois: IEMA active licensee listing (filter “Measurement Professional”)
Other states: NRPP, NRSB, EPA state programs

Built-in tester listings are coming. For now we link to the official sources.