C-16-105 - Basis for Promoting Radon Reduction (CERTI-314 / NRPP 138)

This program provides a comprehensive review of the "Why's" and "How-To's" of radon control techniques in new and existing homes.These video based presentations were presented by the nation’s leading experts on radon health risk, mitigation techniques as well as legal aspects and social marketing strategies.The completeness of this program delivered jointly by NEHA and the US EPA, makes it applicable to environmental health professionals, building officials, architects, builders as well as radon professionals.
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These video based presentations were presented by the nation's leading experts on radon health risk, mitigation techniques, as well as legal aspects and social marketing strategies. The completeness of this program delivered jointly by NEHA and the US EPA, makes it applicable to environmental health professionals, building officials, architects, builders, and radon professionals.

There is approximately 16 hours of coursework, including audio, video, publications, and quizzes that are taken as you progress through the course (not timed and may be taken unlimited times).  There is no time limit for taking the course, and even after completion you continue to have access to the course in order to refer back to resources.

CERTI students also have access to business tools such as sample contracts, and warranties.  We are also available by phone during and after the course for any questions concerning the course or radon situations you come across on the job.

Note: your name, email address and an indication of passage of this course may be shared with national or state certification agencies for verification of completion.

Course Includes:

  • Video
  • Online Quizzes
  • Downloadable Course Certificate
  • 16 Category 1 CE Credits


  • Download/Streaming - No course materials will be shipped - everything you need is available to access and download online.


Wednesday, 01 March 2023
Jerry said: All good!
Robbie Gilmore
Tuesday, 21 February 2023
Steven said:

Good Course overall

Linda DeFelice
Wednesday, 08 February 2023
Troy said:
Kevin Schauer
Thursday, 02 February 2023
Lonnie said:

It's good.

Kenith Kwan kin Lau
Friday, 30 December 2022
Craig said:
Broc Burmeister
Friday, 30 December 2022
Brian said:
Monday, 05 December 2022
William said:

Thank you

Friday, 16 September 2022
William said:

Worth while class and covered both measurement and mitigation in an easy to understand manner. 

Patrick French
Tuesday, 06 September 2022
Miranda said:

Everything was good

Mahtab Ghadakpour
Tuesday, 16 August 2022
Brandon said:
Ben McEwen
Thursday, 14 January 2021
Ralph said: Interesting and educational speakers.
Trevor Marion
Tuesday, 12 January 2021
Jeremiah said: The course was very informative and educational.
Bonnie Dentice
Monday, 30 November 2020
Harry said:
Antone Jones
Friday, 01 May 2020
Tony said:

Good info and presentation!

Gordon McIntyre
Wednesday, 29 April 2020
Brett said:

Great course! Good review for some things and good new info about new construction!

Mike Walther
Tuesday, 18 February 2020
Tim said:

Content of the course was relevant for both testers and mitigation professionals and a great review to promote public awareness.

Joshua Morris
Wednesday, 12 February 2020
Samuel said:

Great and informative review of relevant information.

Marcus Stonestreet
Tuesday, 04 February 2020
Derek said:

Coarse was easy to fallow. Like that you can review questions and take again.

Chris Myers
Friday, 24 January 2020
Brian said:

Very informative

Zhaun-Paul Draper
Saturday, 28 December 2019
Patrick said:

No comment needed. Everything is perfect. 

Tim Dillon
Wednesday, 11 December 2019
Steve said:

Very good course to take if you are just beginning or a veteran in the Radon field. Lots of new material and some review over the past years, lots  of knowledgeable speakers and information.

Brandon Lyczewski
Saturday, 07 December 2019
keith said:

thank you, learned alot

Jack Cooper
Thursday, 28 November 2019
Scott said:
Robert Daly
Tuesday, 10 September 2019
Wade said:

Very pertinent and interesting topics. The speakers are experts in their respective fields.

Becky Baker
Thursday, 22 August 2019
Bryan said:

Very good course as are all of the courses I have taken at Certi through out the years. Recommend them highly.

Stacey Hall
Monday, 17 June 2019
Scott said:

I really like being able to do the course at my own pace.

Lynn Pelletier
Monday, 04 February 2019
Todd said:

Well done., but some topics about green building etc not applicable to radon

Samuel T Runge
Tuesday, 22 January 2019
Steve said:

Worked well for me!

Jesse Williams
Tuesday, 22 January 2019
Steve said:

Worked well for me!

Jesse Williams
Friday, 26 October 2018
Christopher said:
jeffrey glenn martin
Friday, 26 October 2018
Christopher said:
jeffrey glenn martin
Friday, 26 October 2018
Christopher said: Great Course
jeffrey glenn martin
Sunday, 23 September 2018
Peter said:

Enjoyed the course

Paul Way
Sunday, 23 September 2018
Jason said: I recommend 5 out of 5
Scott Speck
Monday, 17 September 2018
Troy said:

I thought the presenters did a great job the material was well presenting and interesting.

William Holubek II
Sunday, 05 August 2018
Judith said:

Setting aside the inarticulate speech of two presenters, there were several who gave conflicting answers.  Specfiically, Topic 8.  Question 5 and question 8.  The presenter SPECIFICALLY stated that air transfer for living space (he used the living room as an example) WAS NOT acceptable.  However, the answer was true.  Second, question 8.  The correct answer according to the scoring was "2-3" times higher.  The presenter, however, showed a slide that specifically said "2 - 5" times higher.  Test 10.  The presenter gave both buying AND selling as times of heightened radon awareness - not specifically separating one from the other.  Since I am also a real estate agent, I see more buyers concerned than sellers. , simply because the sellers don't want to have to pay for any additional repairs.  Hence, my answer buyers was correct, although both were given.

Adam Donaldson
Monday, 18 June 2018
David said:

The course was very informing and entertaining. Did not care for the Section 10 presenter and found the Green Campaign to be rather 'campy'.

John Caruso
Friday, 15 June 2018
Andrew said:

Good baseline of information to ensure competence.

Mark Carrothers
Friday, 27 April 2018
Kenneth said: I recommend this course 5 out of 5
Tuesday, 27 March 2018
Therese said:
Keith Hensel
Wednesday, 21 March 2018
David said:

The industry in my opinion has been struggling to convince the public (and me also) as to relevance and dangers related to radon. My stance has been the lack of research and tangible data to support any of the assertions but realistically it could take several decades to gather enough data to quantitatively prove this.  The radiations speak volumes as to the harmful potentials but real clinical proof is lacking. No one's fault just the time it has been in the public eye.  Everything is a process and this is no different. The most important presenter was far and away Dr  Field since he was delving into and trying to solve the inherent weaknesses(of proof) by doing research and trying to PROVE the dangers of exposure to radon and the RDP's. Hats off to Dr Field.  Doug Kladder was solid as usual and his knowledge and experience with mitigation is unparalleled.  

Robert Dwyer
Tuesday, 13 March 2018
Wayne said: I recommend 5/5
Richard Dieckman
Tuesday, 30 January 2018
Quwante said:

This is a very educating course that has bought up a lot of questions a supervisor in the radon industry.

I would say the suggestion i will give is to play these videos a lot more during first time home buyers courses.

Nate Sereda
Wednesday, 24 January 2018
David said:
R William Field
Wednesday, 24 January 2018
David said: 5 out of 5 I would recommend this course
R William Field
Tuesday, 23 January 2018
Chuck said:

Very good continuing education topic and material.

Jervis Garcia
Wednesday, 13 December 2017
Tyson said:

Thanks again!

William Malone
Monday, 20 November 2017
Jason said:

The quality of the course was very good and the instructors did a great job.

Thursday, 12 October 2017
Bruce said:

Very interesting information and presented in a professional easy to understand manner.

jon b perkins
Wednesday, 02 August 2017
Neil said:

Very easy to navigate through the program

Mike Guyuron