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Verified Reviews for Radon Detection And Reduction pros in Alstead, NH

*The Angi rating for Radon Detection And Reduction companies in Alstead, 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 Alstead, 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 November 08, 2025

Find Radon detection and reduction specialists in Alstead

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

Serving Alstead, 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%
6 neighbors recently requested a quote
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Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)

Serving Alstead, 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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Norway Hill Home Inspections
New to Angi

Serving Alstead, NH and surrounding areas

In business since 2008

Free estimates

Credit card accepted

Given the time and energy you've spent looking for your dream home, having absolute confidence that you've chosen the best home for you and your family only makes sense. Norway Hill Home Inspections can help give you that assurance. I perform efficient and accurate home inspections. I am available for home buyers, home sellers, and real estate professionals alike. Call me the next time you need an thorough inspection performed on a property of yours!

Response time5 hrs
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Radon Detection and Reduction questions, answered by experts

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

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

The Alstead, 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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