Top 10 Best Radon detection and reduction specialists in Spearfish, SD

Q: How often should radon levels be tested to ensure safety?

• <div><p>Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.</p></div>

Q: How is radon gas abatement professionally handled?

• <div><p>Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.</p></div>

Q: Do radon mitigation systems come with warranties?

• <div><p>Yes, many systems include warranties for performance. Confirm terms with your installer.</p></div>

Q: How often should you replace a radon fan?

• <div><p>Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.</p></div>

Q: What steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Spearfish, SD

*The Angi rating for Radon Detection And Reduction companies in Spearfish, SD 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 Spearfish, SD 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 June 20, 2026

Reviewed in June 2026
I had Rasmus install trim stain and set a pocket door. I am pleased with the work he has done. I will be hiring him again!
REH Contracting
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Reviewed in June 2026
Lee and his employee were great. Lee was very responsive in his communications, scheduling, and pricing. They did a great job painting and were very careful with preparation and cleanup. I would recommend him very highly. If /when I need painting again, Lee will be the first number I dial!!
Splash O Color Painting
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Reviewed in May 2026
Kyle, the owner of Canyon Electric, was recommended to us as a trustworthy electrician in the Black Hills area. We had purchased a vacation home in Lead and were having a hot tub and sauna installed. We needed to add 2 240 amp breakers, a new breaker box, and hard wiring both units. We are from...
Canyon Electric LLC
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Reviewed in March 2026
TJ was very thorough in his explanation of the project and giving us our options. The installation of the spray foam exceeded our expectations. He worked around our remodel and is willing to come back in phases as we complete a room and shuffle our belongings. We appreciate the communication,...
Walking 4, LLC
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Reviewed in January 2025
Jimmy from ClearSite Services LLC contacted me promptly and arrived the same morning to handle snow removal. He was professional, friendly, and did an excellent job clearing my driveway. I?m extremely satisfied with the service and highly recommend them!
ClearSite Services, LLC
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Reviewed in March 2024
Dave was very friendly and helpful. Worked in the cold was very informative and was very patient. Was awesome explained everything. Jumped up and down on the seat to prove it was strong. Tyler was great to work with.
Your Home Improvement Company
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Reviewed in May 2023
Excellent work; very conscientious and thorough. Would highly recommend.
Black Hills Dust N Clean
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Reviewed in September 2022
Wonderful Expierence with a knowledgeable and fair expert. Gave the best solution and had the best price. Very quick to schedule, amazing craftsmanship.
Tim Taylor Enterprises, LLC
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Reviewed in May 2022
They showed up when they said they would, did what they said they would and the price didn't change. It was many many loads of gravel, had a steep curved hill and after it was spread out and packed it held pretty well. They used 2 sizes of rock which was a good idea I wouldn't have thought of....
Foley Homes, LLC
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Reviewed in August 2021
He did a very thorough job and it was great attention to detail. He was always on time and I'm very satisfied with the service.
Carrie's Cleaning Services
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Find Radon detection and reduction specialists in Spearfish

ALO Radon

4.9(

)

Serving Spearfish, SD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Anthony was very polite and knowledgeable. The hole job was done in two days. Radon readings went from 14 to 34 down to 0.4, we are very happy ."

+13

Response time3 hrs

Response rate94%

Recommended by92%of homeowners

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Blackburn Foundation Repair, LLC

4.6(

)

Serving Spearfish, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Excellent service! Pro was nice, easy to work with, professional! Never would have known he was here, he cleaned the working area so well! I would definitely recommend Blackburn Basement!!"

Response time1 day

95 neighbors recently requested a quote

Recommended by80%of homeowners

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Black Hills Radon

New to Angi

Serving Spearfish, SD and surrounding areas

Approved

In business since 2022

Free estimates

Black Hills Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

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Advanced Radon Mitigation

4.9(

)

Serving Spearfish, SD and surrounding areas

In business since 2000

Free estimates

"Tyler is very thorough and professional. He did an excellent job in detecting radon in our new home and we hired him to install a mitigation system."

Response time12 hrs

Recommended by100%of homeowners

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Black Hills Professional Home Inspections LLC

New to Angi

Serving Spearfish, SD and surrounding areas

In business since 2010

Top rated inspector in the Black Hills area

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Empire Home Inspections, LLC

New to Angi

Serving Spearfish, SD and surrounding areas

In business since 2022

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!\n\n

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Radon Detection and Reduction questions, answered by experts

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

Yes, many systems include warranties for performance. Confirm terms with your installer.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

The Spearfish, SD 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.

See all articles

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
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•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Amy Freeman
•
Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.