Log in with your username and password to be returned to “My Home Page” where you can easily jump to the courses you are enrolled in as well as previous courses you have completed or find new courses you may be interested in.   


CERTI Courses Available for Registration

Returning Students - Once you log in, you will have access to "My Home Page" which will provide you with a list of courses already completed and other courses available to you.  If you are renewing your NRPP certification please note, you will not be able to repeat courses.  Please contact us if you have any questions.  Returning Students Log in Here


Entry Course a

Entry Level Courses Leading to Certification

CE Course a2

Continuing Education

resources a

Resources for Radon Professionals

Center for Environmental Research & Technology, Inc.
1032 N Wahsatch Ave; Colorado Springs, CO 80903

Office Hours: 7:30AM – 4:30PM – Mon-Fri (Mtn Time)


Local Phone:    719-632-1215
Toll Free:    800-513-8332
Fax:    719-836-8989


Consumer Information

In order to assist you in understanding more about radon, its health effects,
and some common methods for testing and mitigating, we have provided information and resources.

CI videos
CI tech

A technical guidance for Colorado building conditions - May 2018


A do-it-yourself book designed to assist homeowners to understand radon mitigation systems, 
to either install a system themselves, or to be aware of the correct installation procedures and
what they can expect if it is installed by a certified professional.

CI rn info






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NEW VIDEO - Completing a CERTI Course

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NOTICE REGARDING NRPP EXAMS FOR CERTIFICATION As of 5/18/20 NRPP will being using a new online remote exam proctoring platform - Examity
Students will register with NRPP first, then they will be able to schedule with Examity.  This is a "how it works" video. 

Complete instructions included in entry level courses within the Certification Steps section under the Course Instructions at the top of the course.


All courses to which you currently have access.  

You continue to have access to courses even after completion.

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All certificates issued to you in CERTI Courses.   

To download certificate, click on the course title.