About RadonCompare

RadonCompare is an independent directory of certified radon professionals. Our goal is simple: make it effortless to find a qualified, verified radon professional near you and contact them directly — with no lead fees or middlemen.

Where our data comes from

Every one of the 2,615 listings on RadonCompare is sourced from official public certification records. We do not invent or buy listings — we structure the authoritative registry so it's actually usable, then keep contact details current.

For professionals

If you're a certified radon professional, you can claim your listing for free to keep it accurate, or upgrade to Featured for top placement in the cities you serve.