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Find Radon gas testers in Merrimack

Avatar for True North Home Inspections, LLC
True North Home Inspections, LLC
4.9(
24
)

Serving Merrimack, NH and surrounding areas

Angi Approved

In business since 2020

Free estimates

Emergency services offered

"John was very thorough in his work and took the time to point out to my husband not only what would need or even just WANT repair but also how to do the work himself so that we could do it ourselves. We will be recommending True North to anyone we know who needs an inspection done from here on out."
Response time3 hrs
Response rate88%
3 neighbors recently requested a quote
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Avatar for Paul Cornell & Associates
Paul Cornell & Associates
5.0(
68
)

Serving Merrimack, NH and surrounding areas

In business since 1990

Free estimates

Credit card accepted

"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
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Avatar for Lawrence DiPietro LLC
Lawrence DiPietro LLC
5.0(
39
)

Serving Merrimack, NH and surrounding areas

In business since 1982

Free estimates

Emergency services offered

"Larry did a great job! He is very thorough , very patient to explain every detail to me. Even though the house is new construction, he still found out a bunch of problems. He is very helpful, I would recommend him to my friends."
LarryDiPietro1
LarryDiPietro2
Recommended by100%of homeowners
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Avatar for Morrison Home Inspections LLC
Morrison Home Inspections LLC
5.0(
52
)

Serving Merrimack, NH and surrounding areas

In business since 1983

Free estimates

"Kevin is an excellent home inspector. He did two home inspections for me and was extremely responsive, professional and knowledgeable. He was very thorough during the inspections and took the time to answer all of my questions. He is also very personable and fun to work with. I would hire him again in a second."
Recommended by98%of homeowners
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Avatar for Seacoast Inspections LLC
Seacoast Inspections LLC
4.9(
71
)

Serving Merrimack, NH and surrounding areas

In business since 2003

Free estimates

Emergency services offered

Licensed Home Inspector #698 MA, #107 NH\nASHI Certified Inspector #247162,\nCertified Level II Building Science Thermographer #31162,\nEDR Certified,\nCertified WDI Registry Inspector #90113. \n\nNo Fee guarantee!

Missing Insulation
Recommended by95%of homeowners
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FAQs for radon gas testing projects in Merrimack, 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 Merrimack, NH homeowners’ guide to radon gas testings

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

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