Professionals
Radon professionals in New Hampshire
Who tests and fixes radon in New Hampshire, what New Hampshire's own program says about licensing, and how to check a credential before you hire.
Updated October 2, 2026
Short answer
Radon professionals in New Hampshire, in brief
No business that New Hampshire itself licenses or certifies is listed on Radon411 yet. New Hampshire's radon program says the state does not license or certify radon professionals.
The rule
Does New Hampshire license radon professionals?
No. New Hampshire's radon program page, checked on September 25, 2026, says:
There is no requirement in New Hampshire for those professionals testing for radon to be certified but it is recommended to use a nationally certified radon measurement professional especially if a real estate transaction is involved.
EPA's state contacts page lists New Hampshire among the states with radon credentialing programs. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.
Radon411 reads no licensing list for New Hampshire; New Hampshire's radon program is the place to ask who works there.
State program
New Hampshire's radon program
The state's own radon program: the place to ask who may work in the state.
New Hampshire Radon Program
New Hampshire Department of Health and Human Services
Its page covers free or discounted test kits and who may test and fix radon in the state.
Visit the program's page (opens in a new tab)Read September 25, 2026
The directory
Radon professionals listed for New Hampshire
No radon business is listed for New Hampshire yet. See professionals listed in neighboring states, or ask New Hampshire Radon Program for its list. Run a radon business in New Hampshire? Ask to be listed.
Nearby
Listed professionals in states next to New Hampshire
A business licensed in a neighboring state is licensed there, not necessarily in New Hampshire. Check New Hampshire's rule above before you hire one.
Before you hire
How to check a credential in New Hampshire
New Hampshire's rule
New Hampshire's radon program says the state does not license radon professionals, so ask for a national certification instead, and check it in the next two steps.NRPP's search
The National Radon Proficiency Program's search finds its Certified Mitigation Specialists and Certified Measurement Professionals by area, by name, or by the 6-digit NRPP ID number a professional can give you.NRSB's search
The National Radon Safety Board's search finds a professional in your area, or confirms that a named professional is NRSB certified.The ID card
The programs usually issue a photo ID card showing the holder's qualifications and its expiry date. Ask to see it, and if in doubt, check with the body that issued it.
Hiring
Hiring in New Hampshire
A tester
Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.
A mitigation contractor
Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.
Questions
Common questions about New Hampshire
- Does New Hampshire require radon professionals to be licensed?
No. New Hampshire's radon program page, checked on September 25, 2026, says.
EPA's state contacts page lists New Hampshire among the states with radon credentialing programs.
There is no requirement in New Hampshire for those professionals testing for radon to be certified but it is recommended to use a nationally certified radon measurement professional especially if a real estate transaction is involved.
- How do I find a certified radon mitigator in New Hampshire?
No business is listed for mitigation in New Hampshire on Radon411 yet.
Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.
- Who tests for radon in New Hampshire?
No business is listed for radon measurement in New Hampshire on Radon411 yet.
A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.
- Does New Hampshire offer free or discounted radon test kits?
New Hampshire Radon Program's page, checked on September 25, 2026, says:
The NH Radon Program provides free radon test kits to NH residents.
- How current are the New Hampshire listings?
Radon411 reads no licensing list for New Hampshire; New Hampshire's radon program is the place to ask who works there.
- Is every business on this page licensed in New Hampshire?
No listing here is a license. The first list holds businesses New Hampshire's own registry lists, or that confirmed their own listing; each card names its source.
Before you hire, check the business against New Hampshire's own list or the issuing body's search, because a listing on Radon411 is not a credential.
No business pays to be listed, labelled or placed higher here, and Radon411 sells no leads. How listings are verified. Run a radon business in New Hampshire? Claim your listing.
Next steps