Certified radon testers & mitigatorsMontana — testing — verified 29 Aug 2026

§ 4.1 — Billings, MT

Certified radon testing in Billings, MT

4 current listings from the official file. Verify the credential number before you hire.

Last verified August 29, 2026. Methodology NRPP. NRSB.

Certified radon testingCertified radon mitigation

  1. Caleb A Benson

    Radon Men

    current NRPP № 116223

    testing

    (406) 839-7294August 29, 2026cite ↗

  2. Noah A Shaver

    Certified Radon Services

    current NRPP № 115788

    mitigation, testing

    (406) 671-5151August 29, 2026cite ↗

  3. Rick Shaver

    Certified Radon Services

    current NRPP № 104379

    mitigation, testing

    (406) 671-5151August 29, 2026cite ↗

  4. Zachary P Proffitt

    Billings Radon Pros

    current NRPP № 116104

    mitigation, testing

    (503) 728-8035August 29, 2026cite ↗
Fig. 4 — Billings, MT, approximate. Pin is the city on the official file, not a street address.

Appendix A — Before you hire

  1. Who holds the credential, and can they show the same number that appears on this page?
  2. What test method or mitigation system will they use for this building?
  3. How will they document results or the finished system?

§ 4.3

Nearby places in Montana

Montana pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a Montana license. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.