
Serving Madison, NJ and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Very friendly and professional. Would definitely recommend to anyone looking for radon services"



*The Angi rating for Radon Detection And Reduction companies in Madison, NJ 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 Madison, NJ 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 May 27, 2026

Serving Madison, NJ and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Very friendly and professional. Would definitely recommend to anyone looking for radon services"


Serving Madison, NJ and surrounding areas
Approved
In business since 2015
Free estimates
Customers say: Quality work
"Great value, provided a lot of great info, quick turnaround time"





+4

Serving Madison, NJ and surrounding areas
Approved
In business since 2025
Free estimates
Warranties offered
"Fantastic service from start to finish. Chris was extremely knowledgeable, responsive, fair with pricing, and had a very quick turnaround time. Overall, a pleasure to work with. Highly recommend!!"





+7

Serving Madison, NJ and surrounding areas
In business since 2014
Free estimates
Emergency services offered
"It is my absolute pleasure to write this raving review for Benedict Ugorji (the owner) at Radon Shield LLC and I make no commission recommending him. The radon level was 1.8 pCi/L when I bought my home in Holmdel, NJ, in February 2021. I wanted to lower the radon level for personal health reasons (I have a young 3 year old) not for a real estate transaction (goal level <4 pCi/L). Safe levels were established in the 1970s (The history, development and the present status of the radon measurement programme in the United States of America. Radiat Prot Dosimetry 2015; 167(1-3): 8-14) so maybe new safe levels should be lower than the current recommendation to reflect available technologies for radon mitigation as there is no safe level. I spent $700+ for a new Fantech Rn4EC-4 fan and to seal the French drain serviced through RAdata in Flanders, NJ, and the level was unchanged at 1.6 and 1.9 pCi/L after servicing. RAdata is a disorganized business that will recommend the most expensive system (the energy recovery ventilator) that costs $3000 that other radon companies (I got two second opinions) will say that it does not work. Then RAdata proposed to install a second mitigation system right next to the current system, but could not intelligently justify why the second system would be right adjacent to the current system where there is already subterranean air flow generated by the current system instead of tackling the no subterranean air flow zone at the farthest end of the basement. Please refer to my review about RAdata on Yelp and Facebook and my subsequent reply to their response for details. I kept looking for another radon company and fortunately I found a gem in the unscrupulous radon business. The gem is Benedict whom I unwaveringly and unequivocally recommend. Benedict is responsive – he patiently listened about my radon situation and collected information about my pre and post service radon level and even information down to the granular level like what make and model fan RAdata installed. Benedict came to my home for the consultation, to run the diagnostic tests, he proposed solutions and offered his rational, he did the installation of the second mitigation system (in the area of the basement with no subterranean air flow) from start to finish by himself, he used a more powerful and cheaper fan for the second system (than the one RAdata installed for my first system), and he guaranteed to lower the radon to a specified level in his contract. Benedict charges one flat service fee (whereas RAdata charges the first hour and then at 15 min increments so you are discouraged from asking questions). Benedict took his time to explain to me about how a fan’s performance (like moving air measured in cubic feet per minute or CFM) is affected by your soil’s static pressure (the value on your u-tube manometer). He even followed up with me on a Saturday via text message about the short term radon level measured with the Corentium radon detector (while the charcoal kits are being sampled) and guided me through interpreting the short versus long term average as the values were quite different. We touched based again when the charcoal test came back and the levels were an astonishing 0.5 and 0.6 pCi/L!!!"





+10

Serving Madison, NJ and surrounding areas
In business since 1984
Free estimates
Warranties offered
"Fantastic to work with. I received an elevated radon level after a recent test which required mediation. RAdata were very responsive and timely. They even called several days prior to my appointment to offer a new time after a cancellation. They arrived on time, quickly diagnosed the problem, and performed the required work. The technician took the time to fully explain the system and offer suggestions after a new issue was found. I would highly recommend their services."





+7

Serving Madison, NJ and surrounding areas
In business since 1970
Emergency services offered
"Where to start? Jeff came early and was already checking out the outside of the house by the time we got there at the scheduled time. He was available on a Saturday and he made it work with ours and his schedule which was nice.
Once we got into the house he encouraged my wife and I to follow him around and listen to his sound and super experienced information and advice about every little facet of the house. He took a lot of photos and notes which we should be receiving a report from soon.
He notified us of things that might need more immediate repair and things that could be done over the course of the next few years. Jeff was a very nice, knowledgeable and friendly guy who just wants to get the job done right and is definitely on your side (the buyer).
I would highly recommend Jeff to anyone I know looking for a home inspection. Not only did his price include the home inspection but he also checked for termites and is in the process of doing the radon inspection in the basement.
Highly recommended and he'll even refer you to a good company for oil tank sweeping (who also doesn't charge an arm and a leg) if you need that as well.
Thanks Jeff!
-David
"




Serving Madison, NJ and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
"Very professional! Arrived on time, was very knowledgeable, and friendly. Would use again and recommend."


Serving Madison, NJ and surrounding areas
In business since 2004
Free estimates
Credit card accepted
"I am a real estate agent and recommend Luciano's home inspection services to all of my clients. He is just a pleasure to work with and is exceptionally thorough. His years of experience are evident in the amount of knowledge he possess and shares during his inspections. His diligence and attention to detail help to keep my clients protected and ensure that are no post closing surprises. If your want a true pro, look no further than Luciano Marquez!
"

Serving Madison, NJ and surrounding areas
In business since 1987
Free estimates
Credit card accepted
"Peter came to my house to do a full home inspection and a radon test of my three family home. He actually arrived a few minutes before I did. I gave him some background on the property and outlined for me what areas are included in the inspection and then he got to work. The inspection took around three hours. Peter took a lot of photos which was great. I have a flat roof and this is a pretty high building and I refuse to go up there. So his photos really came in handy for me. And I also have an attic area that I could not walk into, so having the pictures are very helpful in this instance as well.
He is also very knowledgeable and informed on every area that he covered and he does not mind being interrupted with questions. He gave me a lot of great suggestions and really helped me to understand clearly and simply what areas I should pay close attention to and address. He takes his time and always wants to know if you have questions about anything. I highly recommend Peter.
Thanks again Peter for your review of my property. The report is well written, detailed and will be very helpful in addressing items that need my immediate attention.
Donna Harris
"





Serving Madison, NJ and surrounding areas
In business since 2006
Emergency services offered
Credit card accepted
"I am a first-time home buyer who was looking to buy in Newark, NJ. I was Hesitant about the foundation walls, heating and electrical systems in the home. Because they are well-regarded as trustworthy a friend of mine, who had previously had issues with her home, suggested I call Quality Home Inspections. When I spoke with the gentleman on the phone (very polite), All my questions were answered in detail and my concerns were alleviated. Quality Home Inspections also provided me with lead and radon inspections. The best part of all was receiving the inspection results in a time efficient manner. They were very professional. I am currently moving forward with purchasing the house and recommending Quality Home Inspections to anyone looking for a great lead/radon home inspection Service."


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 New York, NY, 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.

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.

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.