Serving Frederick, 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!"

*The Angi rating for Radon Detection And Reduction companies in Frederick, 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 Frederick, 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 January 15, 2026
Serving Frederick, 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 Frederick, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Warranties offered
"We hired Custom Radon Mitigation to handle our Radon problem. They were awesome, we had zero problems. Great work!"





+4

Serving Frederick, CO and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"Mile High Radon did an excellent job for us! Darren got creative and helped hide the mitigation system almost completely - it looks great. Will be recommending in the future!"





+2

Serving Frederick, CO and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Aarmond installed a radon abatement system in my house. He brought my radon level from 14 pCi/L to less than 4. He is very professional and I heartily recommend his company."





+18

Serving Frederick, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2011
Free estimates
Emergency services offered
"The company rep was knowledgeable and hard-working, he even worked with me to get around some technical issues before he started the install. I do wish there would have been a follow up and more education with the “how-to” of the test that I had to set up and send in to ensure that the unit is working properly. All in all, I would recommend Affordable Radon Services for radon mitigation installation."





+25

Serving Frederick, CO and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"Good people and they did a real good quality job installing a radon mitigation system in our home. They listened to my questions and answered them. They did what I asked them to do in a very professional manner."

Serving Frederick, CO and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
"All Colorado Radon tackled a particularly difficult radon mitigation that other companies refused to mitigate. They were very thorough and knowledgeable. Most of all, they were successful in reducing radon levels to well below government standards. We would use them again."





+1

Serving Frederick, CO and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"BIG shout out to North Point Radon! We had to re-do some radon mitigation on the house so we could start working on framing in the basement and they came in and did an incredible job. The pressure from the pump (or however you say it) went up from 1.1 to 1.25, so they filled in a bunch of spaces that weren't sealed up properly and cleaned everything up so our contractor can start framing. No big chunks of puffy foam - everything is sealed cleanly and nice and tight now (obvious from the reading on the pressure). Fast, affordable, effective, and we retested the basement and it came at less than 1%. Seriously good people. I would call them if you need any radon stuff (testing, mitigation, etc.) taken care of."





+2

Serving Frederick, 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 Frederick, CO and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Painless and efficient installation of radon mitigation system. A real pro and highly recommended!"





+3
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.