*The Angi rating for Radon Detection And Reduction companies in Danbury, CT 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 Danbury, CT 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 Danbury, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Small jobs welcome
"I havenâ t performed my radon test yet. Hope itâ s working!!"
+1
Serving Danbury, CT and surrounding areas
Approved
In business since 1995
Free estimates
Credit card accepted
"The installer (Davis) arrived on time, installed the system in about two hours, and showed me everything I needed to know about the system. The “before”and “after” test results were right in line with my own test measurements, which I took with a portable radon detector. The radon level dropped to a safe level after the system was installed, and that level has been maintained since it was installed in July of 2020, about 10 months ago. Overall, I was extremely pleased with A & R and I highly recommend them for radon mitigation work."
+10
Serving Danbury, CT and surrounding areas
Approved
In business since 2018
Free estimates
Credit card accepted
"Doug Urisko of MDL Radon Mitigation and Measurement LLC was extremely helpful and knowledgeable with the issues I was experiencing with my radon water mitigation system. He offered information and his experience to resolve the issues with my water system. He took his time to help me troubleshoot these issues and help me understand what I can do in the future. I am beyond appreciative of Doug?s help and would highly suggest MDL Radon for any of your radon mitigation needs!"
+2
Serving Danbury, CT and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"Apex did a great job explaining the choices I had as far as solutions involving my Radon gas issues. They were friendly and did a very professional job. I would highly recommend them."
+3
Serving Danbury, CT and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
I pride my company on reliability, great communication, integrity, and quality work. I am an expert in home inspections, mold testing and radon testing and remediation. I will do my absolute best to keep you as educated and informed on your particular inspection project. I look forward to earning your business! Book with me online or feel free to give me a call today! My focus is protecting your home investment.\n\nThank You,\nCharles Rauch\nOakhill Home Inspections
Serving Danbury, CT and surrounding areas
Approved
In business since 2020
Emergency services offered
Small jobs welcome
The Lab is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
Serving Danbury, CT and surrounding areas
In business since 2010
Free estimates
Emergency services offered
"Quick response to request for quote, performed radon test as scheduled and emailed results quickly."
Serving Danbury, CT and surrounding areas
In business since 1980
Free estimates
Emergency services offered
"Water Flo is fantastic. From Nick Sunday who did the walk through and estimate to the office staff and the installers, all are professional and friendly. No waiting months for the work to get done. The entire process took less than 2 weeks. Everyone was on time. The installation was neat and clean. The explanation of the equipment was presented so it was easy to understand and the radon system installed has dropped my levels 3 units!"
+5
Serving Danbury, CT and surrounding areas
In business since 2018
Free estimates
Warranties offered
OUR SERVICES: We are licensed to perform Home Inspections In NEW YORK and CONNECTICUT. We inspect the exterior grounds, building foundation and structure, the roof, attic, insulation, the basement, the HVAC, Electric and Plumbing systems. We check for insects and pests, make sure all appliances are running, and look for any evidence of mold-like substances. We can also test for RADON. Call Now! (914) 999-0166
+7
Serving Danbury, CT and surrounding areas
In business since 1987
Free estimates
Emergency services offered
"The company provided the information I needed to know about the Radon System at no cost to me."
+22
From average costs to expert advice, get all the answers you need to get your job done.
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.
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 testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
Knowing how to test for radon will keep your home free and safe from this odorless gas—you just have to decide whether to do it yourself or hire a pro.
