*The Angi rating for Radon Detection And Reduction companies in Alton, NH 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 Alton, NH 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 13, 2026
Serving Alton, NH and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Cannot say enough good things about this company! Responsive, respectful, quality work , and reasonably priced."
+32
Serving Alton, NH and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"John was great, came to inspect our home in Rochester and was professional and had every piece of equipment you could need to give us a detailed look into our house. Even when the seller made a mistake on the sewer and water system types John helped us test both and went above and beyond. Cannot recommend enough if you want a the best and safest bet for an inspection!"
Serving Alton, NH and surrounding areas
In business since 1988
Free estimates
Credit card accepted
"The company was very easy to schedule with, and the technician was extremely friendly and efficient! I would definitely recommend them for radon mitigation systems!"
Serving Alton, NH and surrounding areas
In business since 1981
Emergency services offered
Credit card accepted
"Great service great person as well."
Serving Alton, NH and surrounding areas
In business since 2014
Free estimates
Emergency services offered
"He was on time, arrived at 9am as quoted and began to install the system. The system required two suction points and a sump pit cover. The sump pit originally had a pedestal pump in place and none of the other radon companies would change the pedestal pump to a submersible pump as required for the mitigation system to function properly. Rhino Radon not only changed the pump but installed a back flow check valve to ensure proper functioning of the system. All of the other companies said we would have to employ a plumber or a handy man to get this done. Had we gone that route the closing would not have happened. Rhino Radon gladly did all the work required and didn't even break for lunch!!! He was more concerned with getting us out of the vacant house seeing we are already down the cape. The system that involved a crawl space and being vented through the garage roof was completed immaculately and the test results came back at 0.5 pCil/L. This pleased the lender and buyer and exceeded our expectations. We highly recommend Rhino Radon Services.
"
Serving Alton, NH and surrounding areas
In business since 1985
"I had Russell Installations install a metal roof and I was very happy I hired them. I would hire them again. They did the job in the amount of time they told me it would take. Pete is truthful and easy to get in touch with. Not like so many other contractors. Great job. thanks."
+8
Serving Alton, NH and surrounding areas
In business since 2023
Free estimates
Small jobs welcome
"In the whole stressful home buying process he made the inspection the easiest, most stress-free part. Awesome!"
+3
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.
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