Verification guide
How to Verify a Pennsylvania Radon Mitigation Professional
Anyone can put a badge on a website. The only meaningful check is the Commonwealth's own record — and it takes a few minutes. This page shows exactly how to do it and what to compare.
We do not run a live certification checker
If a verified, synchronized dataset is integrated in future, a search feature will be built against those actual records and dated accordingly.
What certification means in Pennsylvania
Pennsylvania certifies radon services rather than issuing a trade license. Persons and firms performing radon testing, mitigation or laboratory services for others are generally required to hold DEP certification, subject to the exemptions in the Commonwealth's Act and regulations.
Certification confirms that the Commonwealth recognizes the person or firm to provide those services. It is not a rating, a quality score, or an endorsement of a particular company.
Individual and firm records
Where current DEP guidance distinguishes individual certification from firm certification, it is worth checking both: the business you sign a contract with, and the person who will actually perform the testing or install the system. A firm record does not automatically tell you who is coming to the house.
Step by step
| Step | What to do |
|---|---|
| 1 | Ask the contractor for the exact legal name of the individual and the firm, plus any certification identifier they hold. |
| 2 | Open the official Pennsylvania DEP certified radon service provider listing. |
| 3 | Search for the firm name and the individual's name as given to you. |
| 4 | Confirm the certification category matches the work — testing, mitigation, or laboratory. |
| 5 | Confirm the record is current, not expired or lapsed. |
| 6 | Note the date you checked, and keep a copy for your project file. |
| 7 | If you cannot find the record, ask the contractor to explain before you sign anything. |
What to compare beyond certification
- Does the proposal describe the number of suction points and the reasoning?
- Does the scope include diagnostic measurements before design?
- Is post-mitigation testing included, and who performs it?
- What is warranted — the fan, the workmanship, or a performance outcome?
- Is electrical work included or subcontracted?
- Does the professional have experience with your building category?
- Is the quote written, itemised and comparable with the others you hold?
Claims that should prompt questions
- "EPA certified" — EPA does not operate a contractor certification program of that kind.
- Any implied endorsement by DEP or a government agency.
- A guarantee of an exact post-mitigation reading.
- Pressure to sign the same day the result arrives.
- A quote with no description of where suction will be applied.
Request quotes, then verify before you hire
Share your test result, foundation type and project details. We pass your request to independent radon professionals — we do not perform the work ourselves.