Find a certified
radon professional.
The national directory of NRPP-certified radon testing and mitigation professionals. 2,882 certified pros across all 50 states. Every phone number visible, every certification verified.
Why Do You Need a Radon Pro?
Match your situation to the right radon service. Then find a certified professional in your area.
Buying a Home
Get a radon test before closing. Required or recommended in most states.
Radon TestingHigh Radon Levels
Your test came back above 4 pCi/L. Find a certified mitigation pro.
MitigationCommercial Building
Multi-family or commercial radon testing and mitigation specialists.
Multi-FamilyNew Construction
Build radon-resistant from the start. Required in many states.
New ConstructionAnnual Re-Test
EPA recommends re-testing every 2 years or after major renovations.
TestingBrowse by State
Select your state to find NRPP-certified radon professionals near you.
How It Works
Find and contact a certified radon professional in under a minute.
Find your area
Search by city or state. Every listing shows the professional's location and service area.
Match your need
Filter by service: radon testing, mitigation, multi-family, new construction, and more.
Check certifications
Every professional is NRPP-certified. See their specific certifications and specialties.
Call directly
Phone numbers on every listing. No middleman. No lead-gen fees. No signup required.
About Radon
Radon is a naturally occurring radioactive gas and the #1 cause of lung cancer among non-smokers, responsible for about 21,000 deaths per year in the U.S. The EPA recommends testing every home and taking action when levels exceed 4 pCi/L. Nearly 1 in 15 U.S. homes have elevated radon levels. Testing is simple, and mitigation systems can reduce radon by up to 99%.