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Find Radon gas testers in Fargo

Avatar for River Cities Radon
River Cities Radon
5.0(
6
)

Serving Fargo, ND and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"I live in a small rural town and Rick took the time over the phone to get an understanding of our basement setup so that he could give an accurate quote. He was very responsive, followed through on all plans, arrived on time, was tidy and professional every step of the process. The cost ended up being a little less than expected. The system he installed is working perfectly and our radon issue is fixed! Highly recommend!!!"
Response time12 hrs
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for American Waterworks
American Waterworks
4.8(
133
)

Serving Fargo, ND and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"The service was for Radon Mitigation in our home that had higher than acceptable Radon levels. The work was professionally done, and care was taken to protect carpeting etc during their work. The crew updated us home owners as they did their work and asked permissions for needed modifications to the house. I would recommend this company to anyone looking for quality workmanship, congenial communication and moderate pricing."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time3 hrs
593 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
4.8(
347
)

Serving Fargo, ND and surrounding areas

In business since 1995

Free estimates

Warranties offered

"<p>it was superb! they easiest, hassle free Radon test in town, with extremely proficient people -- very knowledgeable and very people-friendly! they took their time to explain things on the phone to me before I committed. the test came back within 10 days or so -- via email. which is very convenient. it was very clear as it is, but I like talking through it and get advice. they were instantly available to discuss. they gave me future tips to keep on top of all things Radon related. </p> <p>I have to say that all this comes to be after 3 months of many back and forths with 3 other companies -- none of the other companies could be bothered to schedule a time, and those who did, never showed up.. many times over. I don't know why I was so patient with them and I wish had discovered Environmental Testing & Research Laboratories much sooner.</p> <p>Really highly recommend them!</p> <br />"
Recommended by93%of homeowners
Avatar for Environmental Air Solutions, Inc.
Environmental Air Solutions, Inc.
4.0(
4
)

Serving Fargo, ND and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Levi the VP and analyzer was on time and efficient as well as educational. He drove 2 hours to get there and spent enough time to get the job done well. He communicated everything thoroughly."
Recommended by75%of homeowners
Avatar for SafeBasements of Minnesota Inc
SafeBasements of Minnesota Inc
4.9(
50
)

Serving Fargo, ND and surrounding areas

In business since 1990

Free estimates

Warranties offered

"Very well. Had multiple people out to evaluate my water issue in the lower level of our home. Hired these guys because they seemed to have the most reasonable solution for my issue. In the end they had to do a core drill to allow the water to drain from my block and install the Safe Edge system to prevent any future water from entering my lower level. Called in October, couldn't actually perform the work until December due to how busy they were."
Recommended by96%of homeowners
Avatar for Nordic Companies
Nordic Companies
5.0(
1
)

Serving Fargo, ND and surrounding areas

In business since 2010

Free estimates

Warranties offered

Nordic Companies is owned by Lars Knobloch. Nordic Home Inspection and Nordic Environmental offers a variety of services from residential and commercial inspections to testing for radon and mold.

Recommended by100%of homeowners
Avatar for Horizon Inspections
Horizon Inspections
New to Angi

Serving Fargo, ND and surrounding areas

In business since 2019

Free estimates

Warranties offered

With 30+ yrs experience in almost every aspect of construction, Chris brings his invaluable experience to every inspection. ASHI Certified since 2014. Services include Home Inspections for Sellers, Buyers, 1-Year Warranties, and Radon Testing. Serving you within an 80-mile radius of Fargo-Moorhead. Horizon Inspections: your future is our focus!

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FAQs for radon gas testing projects in Fargo, ND

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 Fargo, ND homeowners’ guide to radon gas testings

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