*The Angi rating for Radon Detection And Reduction companies in Marion, NY 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 Marion, NY 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 June 01, 2026
Serving Marion, NY and surrounding areas
Approved
In business since 1991
Free estimates
Credit card accepted
"Performed a radon test. Very knowledgeable. Answered all our questions."
Serving Marion, NY and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"Our experience from the estimate process through the completion of the remediation, was outstanding; very professional, friendly, and always available to answer questions and explain the process."
+6
Serving Marion, NY and surrounding areas
Approved
In business since 2001
Free estimates
Emergency services offered
"Despite the storm or 2017, this company scheduled us within a couple days of the consultation and even with the power outage and heat outage they completed the job within a week. I sold the house the day after they completed the work!!"
+22
Serving Marion, NY and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"It went well. The results came back in two days and we got our certificate that the test was done"
Serving Marion, NY and surrounding areas
In business since 2007
Free estimates
Credit card accepted
"I couldn't have asked for a better experience. I checked a few Radon companies and Certified Radon was the best. They seemed to be the most knowledgeable, had the best warranty/guarantee, and actually came in cheaper than some of the others. They brought my radon level from a mid-6 to less than 1 on the first test. If you need radon services I would highly recommend."
+2
Serving Marion, NY and surrounding areas
In business since 1988
Free estimates
Credit card accepted
"They are honest, as they told me upfront, not licensed for Radon remediation, only testing in Putnam County."
Serving Marion, NY and surrounding areas
In business since 2008
Free estimates
"I hired Henrey because a friend recommended him. Also, I'm a vet and he's a vet. He did an amazing job utilizing the latest technology including a drone! I learned a lot about my new home. I strongly recommend Henrey."
+12
Serving Marion, NY and surrounding areas
In business since 1988
Free estimates
Emergency services offered
"We hired them to do radon testing. They came at the time that worked for me and arrived on time."
Serving Marion, NY and surrounding areas
Free estimates
Emergency services offered
Credit card accepted
At our company, your satisfaction is our top priority. We are committed to completing every job to the highest standards, ensuring exceptional quality and service. Discover our range of services and reach out today to book your free estimate. Let us show you the difference our dedication can make!
Serving Marion, NY and surrounding areas
In business since 1996
Emergency services offered
Credit card accepted
"I had them come and give me an estimate. Josh was very professional and respectful. He gave me a written estimate right away. I would love to get the work done but cannot at this time because it cost too much and I am on fixed income. They will be the first I will contact should I decide to have the asbestos removed."
+34
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.
