Top-rated radon detection and reduction specialists.

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Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

Q: What would cause radon in a house?

• <div><p>The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.</p></div>

Q: What are the benefits of radon mitigation?

• <div><p>Mitigation reduces radon levels, protecting your health and complying with safety standards.</p></div>

Q: Is radon a serious problem?

• <div><p>Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).</p></div>

Q: How long can you go without a radon fan?

• <div><p>Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Simpson, NC

*The Angi rating for Radon Detection And Reduction companies in Simpson, NC 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 Simpson, NC 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 November 10, 2025

Reviewed in November 2025
I recently had Sam service and install a new AC unit in my home, and I couldn?t be more pleased with the experience. From start to finish, he was professional, knowledgeable, and very efficient. He took the time to explain what needed to be done, answered all of my questions, and made sure I...
Samuel Elias Barrett
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Reviewed in September 2025
We reached out after discovering water damage and mold in the ceiling of our newborn daughter's room. It took no time at all for Aaron to respond and assess the damage. He quickly found the root cause, which was related to the new HVAC unit we had installed shortly after we moved into our home...
Hightide Water Damage Restoration LLC
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Reviewed in August 2025
I needed three dead dogwood trees cut down and removed. They were very prompt in reaching out to me and discussing what my needs for tree removal were. Dylan came out and looked at the trees later that week and was back the next to complete the job. He did a fantastic job and exceeded my...
Silverthorne's Repair & Landscaping
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Reviewed in March 2025
Alex and crew did a great job. Responded promptly to my initial call and came out for an estimate the next day. Reported on time for the job and did a nice job of removing the dead tree, grinding down the stump, and cleaning up the area. Highly recommended.
L&L Tree Service
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Reviewed in February 2025
Respess Brothers Tree Service were OUTSTANDING, PROFESSIONAL, CONCISE, and TIMELY!! They completed the service - removing two big trees (one very large pine tree in the backyard) and 5 large bushes in the front -- with their new machine so efficiently and safely! We were so impressed with their...
Respess Brothers Tree Service
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Reviewed in February 2024
Advanced building and roofing replaced the roof on my house and did a great job!
Advanced Building & Roofing
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Reviewed in August 2023
True Clarity Cleaning did an amazing job. They were timely, provided feedback and recommendations for maintenance after completing the power washing, and had amazing customer service.
True Clarity Cleaning LLC
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Reviewed in June 2023
Over the past 20 years, Gurkin Roofing has done several roofing jobs for our family. This includes shingle roof repair/replacement/new installation, and metal roof (horse barn) replacement/new installation due to hurricane damage. With the horse barn, severe leaking over the years had damaged...
Gurkin Roofing, Inc.
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Reviewed in October 2022
I am so glad I found Davis RPHI. I could not be happier with them and the outcome. They kept in contact and were actually early on the day of the project. They went above and beyond the call of duty. I will DEFINITELY be hiring them again.
Davis RPHI
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Reviewed in June 2022
He responded quickly. Reviewed the area and gave a quote and I agreed. He did the work the next day and agreed to mow and trim every two weeks.
Lawn Commander Property Services
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Find Radon detection and reduction specialists in Simpson

The Inspection Guys

5.0(

)

Serving Simpson, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"The Inspection Guys are top notch in terms of thoroughness, punctuality, honesty and professionalism. Very helpful throughout my inspections."

+139

Response time4 hrs

Response rate97%

27 neighbors recently requested a quote

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East Carolina Restoration Services, LLC

4.9(

)

Serving Simpson, NC and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"When you experience this type of loss, all you need is the company you hire to be competent and complete. That is what we got with East Carolina Restoration Services. They did the work, respected our home and worked with the insurance company to make sure everything was covered so that we could get back to normal."

+11

Response time1 day

Response rate100%

5 neighbors recently requested a quote

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M&D Property Solutions

4.5(

)

Serving Simpson, NC and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"M&D Property Solutions did a great job at installing a Radon mitigation system for us. Braden was awesome to work with! All done in one day and completely satisfied with it. I would definitely recommend!"

+10

Response time1 day

1 neighbors recently requested a quote

Recommended by100%of homeowners

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SWAT Environmental, Inc.

4.3(

)

Serving Simpson, NC and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"I can not recommend this company highly enough. If you have ANY concerns or questions regarding radon give them a call. They will give you an honest assessment and recommendations tailored to your specific situation. Overall a great experience!"

Recommended by89%of homeowners

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All States Air Duct Pro

3.1(

236

)

Serving Simpson, NC and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"o.k. Wasn't impressed
"

Recommended by49%of homeowners

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Radon Detection and Reduction questions, answered by experts

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

The Simpson, NC 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

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•
Aug 3, 2026Aug 3, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
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How Much Does Radon Remediation Cost? [2026 Data]
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•
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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•
Jul 9, 2026Jul 9, 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.
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•
Jul 9, 2026Jul 9, 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.
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•
Jul 9, 2026Jul 9, 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.