*The Angi rating for Radon Detection And Reduction companies in Darien, WI 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 Darien, WI 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 22, 2026
Serving Darien, WI and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Great, Gabe our installer was the best! We could not be happier with Lifetime Radon!"
+1
Serving Darien, WI and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"This is a high quality mold/fungi/fungus testing company, with excellent customer service and follow-up. The phones were picked up on the first call each time, and arranging for an appointment was very easy. They arrived on time, were efficient, informing, and friendly in their work, and brought commercial equipment to perform the test samples. The follow up phone call and email on the test results was good, and they provided a potential remediation plan for us to follow on the test results. The third party lab utilized by them had easy to understand numbers, graphs, and descriptions of what was tested. We will do business with Gardner Services again in the near future, and will recommend them to others."
+18
Serving Darien, WI and surrounding areas
Approved
In business since 1957
Free estimates
Warranties offered
"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."
Serving Darien, WI and surrounding areas
In business since 2005
Free estimates
Credit card accepted
"Mike was very professional went above and beyond my expectations I would highly recommend him"
+19
Serving Darien, WI and surrounding areas
In business since 2004
Free estimates
"John was top-notch! He really knew what he was doing, and mitigated my radon problem professionally, quickly, neatly--even swept up the floor! I was impressed at how knowledgeable and yet very personable he was."
Serving Darien, WI and surrounding areas
In business since 2020
Free estimates
Warranties offered
"Nick contacted me almost immediately after scheduling my initial appointment through home advisor. He was timely with his appointments, professional during his conversations, and he worked efficiently during the project itself. I love that his work has a transferable written guarantee!!! His prices are competative, and his work is great. I would highly recommend him to anyone that needs to mitigate their home for radon gas."
Serving Darien, WI and surrounding areas
In business since 2019
Free estimates
Credit card accepted
"Great to have radon levels checked."
Serving Darien, WI and surrounding areas
In business since 2008
Free estimates
Warranties offered
Best Radon Solutions, LLC, is a well established business with years of unmatched expertise. Customer preference and priorities are always first. We're very timely with our work and never lose attention to detail.
Serving Darien, WI and surrounding areas
In business since 1994
For lead testing and other specialty services JW Rothrock Inc. is Wisconsin's premier in lead testing as well as abatement. For cost effective and professional service JW Rothrock is by far above and beyond the rest.
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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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.
