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Find Radon gas testers in Hudson

Radon Systems LLC
5.0(
219
)

Serving Hudson, NH and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"Radon Systems LLC did a great job. I had a radon level of around 6.5 in my basement for years, and finally decided I needed to address it. After receiving 3 quotes, I had Dave from Radon Systems come over to do the job. I initially was resigned to having the PVC pipe go up the side of my house, but Dave found a way to run the piping inside the basement and go thru the garage, with only 18" of PVC sticking up past the garage roof. Excellent! And now my radon level is around 1.0 to 1.5 all the time. The entire job took half a day, and Dave was clean, respectful and easy to work with. I absolutely recommend them."
1 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Airtight Radon Solutions LLC
Airtight Radon Solutions LLC
5.0(
19
)

Serving Hudson, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Offers commercial services

"Airtight did a great job from start to finish. Pre-mitigation testing showed radon levels ranging from 3-12 pCi/L, with an average above EPA recommendations. Accurate estimate, explained every step along the way. The actual job was complete in less than a day! Radon levels taken through the pilot holes were through the roof (150 pCi/L for one hole, average of 118 for all pilot holes)! Now the levels average at 1.7 pCi/L over a three day period, with only a single data point hitting 3. I highly recommend Airtight Radon Solutions, LLC for radon mitigation!"
My Projects
Radon Mitigation Ranch
Response time6 hrs
Response rate95%
16 neighbors recently requested a quote
Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
24
)

Serving Hudson, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Very buyer centered, helpful compassionate and incredibly professional. The only inspection company I would ever use. Thank you for a stress free experience m!"
Response time3 hrs
Response rate88%
5 neighbors recently requested a quote
Avatar for Erickson Foundation Solutions
Erickson Foundation Solutions
4.5(
51
)

Serving Hudson, NH and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"I hired Erickson Foundation for radon mitigation. Job went smoothly. They communicated well, were very professional, and reviewed all potential options for the job with me. The system installation was done on time, professionally done, and well cleaned-up. The equipment is high quality, with the 10-year warranty being a big plus."
Sinking Step Repair
Settling Home Addition
Settling Slab
EZ Posts for deck addition
Foundation Crack Repair

+56

Response time1 day
26 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Paul Cornell & Associates
Paul Cornell & Associates
5.0(
68
)

Serving Hudson, NH and surrounding areas

In business since 1990

Free estimates

Warranties offered

"Highly recommend Paul and Bill Cornell for your home inspection. They were very thorough and took the time to answer my many questions and walk me through his concerns. Paul was also accessible for follow up questions and provided me with honest answers and opinion. All of my future home inspections will be done by Paul Cornell!"
Recommended by98%of homeowners
Avatar for S.W.A.T. Environmental
S.W.A.T. Environmental
4.8(
60
)

Serving Hudson, NH and surrounding areas

In business since 1988

Free estimates

Emergency services offered

"The two techs were very professional and courteous. They installed a high performance radon fan and 3" pvc pipe with two different points of extraction in my basement. They had to work partially in a crawl space which made the install more difficult. They cleaned up all debris and left the work areas immaculate."
Recommended by93%of homeowners
Avatar for Morrison Home Inspections LLC
Morrison Home Inspections LLC
5.0(
52
)

Serving Hudson, NH and surrounding areas

In business since 1983

Free estimates

Warranties offered

"Kevin Morrison is a classy, honest, punctual, responsive and a very thorough professional. I had him help me inspect a home I am planning to buy and was extremely pleased with his work. He answered emails, texts, and phone calls was very patient, showed 5 mins before the job start, came back on the weekend to install radon kit and back on Monday to collect it. Very respectful of people's properties and personable. He is a straight shooter and never tells you what you want to hear, but rather what you need to know. I will definitely hire Kevin for any home related work that he would be willing to do and recommend him confidently for home buying inspection."
Recommended by98%of homeowners
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FAQs for radon gas testing projects in Hudson, NH

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Hudson, NH homeowners’ guide to radon gas testings

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