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*The Angi rating for Radon Detection And Reduction companies in Hanover, 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 Hanover, 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 August 30, 2025

Find Radon detection and reduction specialists in Hanover

Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
26
)

Serving Hanover, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I called John on a Thursday night looking for a 9AM, next day inspection of a property on auction that I needed inspected before I put my bid in. He answered my call, texted me, planned everything and was there at 9am ready to work. He gave us his immediate thoughts so that we could make an offer with good info and then sent us a super detailed report. I couldn't recommend him more. He gave us great peace of mind."
Response time3 hrs
Response rate88%
7 neighbors recently requested a quote
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Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)

Serving Hanover, 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.
"
Recommended by100%of homeowners
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WiseEyes Home and Property Inspections, Inc.
4.5(
3
)

Serving Hanover, NH and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"Called me back within 30 mins of my inquiry. After a cordial meeting over the phone and a full understanding of what my concerns were, and stating clearly what it would cost me, he arrived less than 24 hours later. He was a very nice gentleman and he got right to work. He was complete in his imspection related to my concerns and not only explained the problem but also had the right tools to present a slide show of my house and the areas that needed addressing. He's his own man, not there to promote any contractor and I have since called him again to address other areas of concern related to the foundation of my 100+ year old house."
Infrared Certified
Hidden Moisture in Wall
Missing Insulation in Wal
Hidden Moisture inside wa
Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

The Hanover, NH homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

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