How we verify

Listings come from official records only

Every listing is copied from a state licensing or certification record (Pennsylvania DEP, Minnesota MDH, Illinois IEMA). Each page links to its source and gives the retrieval date. We refresh regularly and remove entries that drop off the official list.

We are not a contractor

RadonFixers does not perform installs, testing, or repairs. Contractors listed here are independent businesses. When you request quotes, your request goes to at most 3 of them.

What we will never do

• Invent reviews, ratings, prices, or listings.
• Let payment change what the state record says.
• Hide paid placements or affiliate links. They will be labeled.