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Online Education for Radon Professionals


 If you are looking for information about the radon industry click here to learn more and get started!

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Consumer Information

DIY Book (U.S. and Canada)



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What's New?


Industry Leader - CERTI has been an industry leader since the mid 1980s.

Quality Courses - CERTI courses are comprehensive, convenient and relevant to today’s radon industry.

Continuous Support - CERTI students receive support during and after courses with access to numerous online resources and instructors are just a phone call away for personal technical support.