*The Angi rating for Radon Detection And Reduction companies in Centennial, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
*The HomeAdvisor rating for Radon Detection And Reduction companies in Centennial, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
Last update on April 23, 2026
Serving Centennial, CO and surrounding areas
Approved
In business since 2018
Free estimates
Customers say: True professional
"Highly recommend! Came out gave me all the info I needed about Radon. Replaced my radon fan and retested ! Did a great job!"
Serving Centennial, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Warranties offered
"Highly recommended. Gage did an initial checkout and provided an estimate and details so I could get the installation approved by my HOA. Then he completed the job himself, very professional installation and careful cleanup. And the system is effective, dropping my radon readings from over 10 to below 2 overnight."
+4
Serving Centennial, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Credit card accepted
"Jason was extremely helpful in installing our radon mitigation system. He even went above and beyond in helping us with other issues our home had. Definitely recommend him and Veteran Radon!"
Serving Centennial, CO and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"they contract the subsequent test to an actual company with a digital tester instead of giving you a canister, this was included in the original quote and they'll come back for free if you don't pass"
+5
Serving Centennial, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2011
Free estimates
Emergency services offered
"They showed up on time and finished within 2 hours completing radon mitigation system."
+25
Serving Centennial, CO and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"I recently used #1 Radon to fix my existing radon mitigation system. I called and Jesse Fuller came to look at system same-day. He had it repaired the same week. He was professional and made me feel comfortable with work and costs to replace the existing fan. I highly recommend #1 Radon and Jesse Fuller."
Serving Centennial, CO and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"All Colorado Radon was the only company out of 5 that bothered to send out a technician to determine what needed to be done. Their quote was competitive with the other companies so we went with them. The installer was on time, professional and finished the job quickly. He made sure to locate the system so it would be as aesthetic as possible. The system lowered our radon level from 8 to .5. All in all a perfect job."
+1
Serving Centennial, CO and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"I couldn't be more pleased with the radon mitigation service John provided. The estimate was accurate-no surprises. He was prompt, efficient and quick- it took just over 2 hours and that's including answering all my questions (and I had a lot of questions!). John's customer service was excellent and the results have so far exceeded my expectations. I am very glad I chose RMR."
+34
Serving Centennial, CO and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"John did a great job. Our radon went down way more than I expected, to almost nothing. There were a couple of blips along the way, and they did everything to fix things with no trouble to me at all. I would highly recommend."
+3
Serving Centennial, CO and surrounding areas
Approved
In business since 2007
Free estimates
Credit card accepted
"HOLLY THE OFFICE MANAGER IS GREAT TO WORK WITH. I HAD RECEIVED AN ESTIMATE FOR RADON MITIGATION BACK IN MARCH AND WHEN I CALLED IN DECEMBER, SHE IMMEDIATELY SAID THE QUOTE WAS STILL GOOD. JASON ADAMS DID THE INSTALL AND DID A GREAT JOB. HE WAS VERY CAREFUL AND DID VERY EXACTING WORK. I WOULD HIGHLY RECOMMEND RADON SAFETY LLC. DAVE MAHAN, LAFAYETTE, CO."
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system in Denver, CO, depends mostly on the type of system being installed. Use this guide to learn about your options.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
