Certified radon testers & mitigatorsEntry — verified 29 Aug 2026

Entry № 116104

Zachary P Proffitt

Billings Radon Pros

Last verified August 29, 2026. Methodology

Credential number
116104
Credential body
NRPP
Status
current Certified. Current in the source file.
Services
mitigation, testing
City
Billings
County
Not on the source file
State
Montana
Phone
(503) 728-8035
Source
https://nrpp.info/listings/bl-22022.html
Fig. 5 — Billings, MT, approximate. Pin is the city on the official file, not a street address.

§ 5.1

Places on the source file

Claim or update this listing. A claim cannot add someone who is missing from the official file.