*The Angi rating for Radon Detection And Reduction companies in Wilmington, IL 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 Wilmington, IL 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 30, 2026
Serving Wilmington, IL and surrounding areas
Approved
In business since 1988
Free estimates
Customers say: Quality work
"We were very happy with the crew who worked in our home. Very professional. Prepared the site so we could not tell they had even been in our home. Testing following the job indicated that the radon gas was leaving our home. Our radon level went from 12 to 0."
+11
Serving Wilmington, IL and surrounding areas
Approved
In business since 2017
Free estimates
Warranties offered
"As a Realtor, Schan has done many of my clients' radon system install and they all were extremely please with his knowledge, install and his going above and beyond to make the system appealing from the exterior of the home. Many companies will not make the effort to ensure that the system does not look unsightly. Schan does and he is an expert at what he does. I would only recommend Schan to my clients!"
+18
Serving Wilmington, IL and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"I had a great experience with this company. Doug did a fantastic job installing our radon mitigation system. He went above and beyond and sealed up some cracks in the basement concrete as well and explained how everything worked. I requested a quote only 3 days ago and it is already installed!"
Serving Wilmington, IL 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 Wilmington, IL and surrounding areas
In business since 1988
Free estimates
Warranties offered
"Professional Radon System did an excellent job. They put the customer at ease. Work was done neatly installer explained everything thoroughly. I will use Professional Radon system again, and I will wii refer to family, friends and neighbors."
+4
Serving Wilmington, IL and surrounding areas
In business since 2012
Credit card accepted
"Completely satisfied. Would certainly recommend them for Radon mitigation work. They worked efficiently, were neat and clean and the price was quite reasonable."
Serving Wilmington, IL and surrounding areas
In business since 1994
Emergency services offered
Credit card accepted
"Inspection went very well. Very thorough. It more than paid for itself. House Doctors's is licensed by the State to do home inspections, and licensed to actually educate and train other home inspectors. They seem like they want to work for YOU not the realtor."
Serving Wilmington, IL and surrounding areas
In business since 2015
Small jobs welcome
Credit card accepted
"Technician explained everything about Radon in terms we could totally understand. He was patient, polite, totally knowledgeable and professional."
Serving Wilmington, IL and surrounding areas
In business since 2005
Free estimates
Warranties offered
"They came in, were clean and efficent. Radon mitigation down to .3 levels. Wonderful work."
Serving Wilmington, IL and surrounding areas
In business since 2008
Free estimates
Credit card accepted
"Very easy to get an appointment on short notice when I had limited time to get a radon test done in the process of purchasing a home. Their price was also slightly lower than an estimate I'd received from another company, and the technician was more thorough about explaining the process than the other company I considered."
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.
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
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.
