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Best radon detection and reduction specialists near Walpole, NH

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Top-Rated Radon detection and reduction specialists in Walpole - Updated Nov 2026

Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
27
)
Radon Gas - Testing

Serving Walpole, 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!"
Response time3 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for 2K Radon & Basement Services
2K Radon & Basement Services
5.0(
7
)
Radon Gas - Abatement

Serving Walpole, NH and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

With over 15 years of experience in the basement and more than 50 hours of continuing education in radon air mitigation, 2K Radon & Basement Services is prepared to help care for your home.

Radon Mitigation
Radon Mitigation
Radon Mitigation System
Radon Mitigation System
Crawlspace Encapsulation

+21

1 neighbors recently requested a quote
Avatar for Rhino Radon Services
Rhino Radon Services
4.2(
9
)
Radon Gas - AbatementRadon Gas - Testing

Serving Walpole, NH and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"It went fantastic. Scheduling wise the gentlemen at Rhino Radon were quick to respond to our inquiry via there website were I filled out a online questionnaire. Once speaking to Henry about the specifics of my home via phone and letting him no my situation. They were prompt in scheduling a date for installation to assure my radon problem didn't delay my ability to sell the home. From the time I filled out there questionnaire on there website till the system was installed and fully operational, all took place In one weeks time. I no from experience that these days the attentiveness and service Rhino Radon provided me can be difficult to find. Having recently just finished the process of building my own home in Malden and dealing with a wide range of company's and workers. It's the little things that stand out like personal treatment,responding quick to inquiries or concerns and of course taking the time to do things properly the first time around while still treating the home with respect. Rhino Radon came recommended to me via a friend and I couldn't thank them enough for steering me in the right direction for my radon mitigation needs. I would like to do the same to anyone currently searching for a radon company. If you want the job done right and a pleasant experience, look no further for your radon needs then Rhino Radon Services.


"
Recommended by100%of homeowners
Avatar for Cube Home & Commercial Inspections & Appraisal Svs
Cube Home & Commercial Inspections & Appraisal Svs
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving Walpole, NH and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Cube Home & Commercial Inspection and Appraisal Management Services" is a Nationally Certifed Home and Commercial Inspection Agency, South Carolina Licensed (RBI 48507) Home Builders Inspector and an Approved US Department of Housing and Urban Development (Hud) 203K Consultant/Inspector (P1710), Vermont Licensed Appraisal Management Services Agency which currently Serving All of Southern and Centeral Vermont,Cheshire County, New Hampshire, Hilton Head Island and Beaufort County in South Carolina and Northern Georgia with Offices in Southern Vermont and Hilton Head Island,South Carolina

Vermont
Certified Licensed Inspectors
Certified Licensed Inspectors
Recommended by100%of homeowners
Norway Hill Home Inspections
New to Angi
Radon Gas - Testing

Serving Walpole, 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
Radon Detection and Reduction FAQs, answered by experts

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

The Walpole, 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.