Get Radon Quotes Add or claim a listing

Certified radon testers and mitigators in Illinois

81 certified radon testers and mitigation contractors in Illinois, from the state's official list or the national NRPP directory.

7 cities & counties81 certified pros

Pros in this state come from the NRPP national certification directory (checked Oct 28, 2026). Get Radon Quotes is independent and not affiliated with NRPP. Some states also require a state license, so confirm with your state radon office before you hire. Your state radon office.

Major cities

Chicago 11

Counties in Illinois A–Z

Smaller counties in Illinois

Counties with only a few listings so far, grouped by county.

Carroll County 1

Champaign County 1

Clinton County 1

Douglas County 1

Dupage County 1

Hancock County 1

Kankakee County 1

Kendall County 1

Livingston County 1

Madison County 2

McDonough County 1

McHenry County 2

Peoria County 1

Sangamon County 1

St. Clair County 1

Vermilion County 2

Williamson County 1

Get free quotes from up to 3 certified radon pros near Illinois

Tell us what you need and where. We send your request to up to 3 certified pros near you who offer that service, and they contact you directly.

What happens next

  1. We match your ZIP to certified pros nearby who offer the service you picked.
  2. Each pro gets your request and contacts you directly, usually within a business day.
  3. Compare quotes and pick one, or none. There's no fee and no obligation.

Free, no obligation. We don't sell your details to anyone else.

Prefer to choose yourself? Every certified pro is listed above with their phone number.