Top-rated radon detection and reduction specialists.

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Q: What is the biggest source of radon?

• <div><p>The soil beneath your house is most likely what&rsquo;s causing an increased level of radon. This is because soil holds radioactivity for a long time and it&rsquo;s also what most buildings are built on. Another common source of radon is water from a source that hasn&rsquo;t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.</p></div>

Q: Why is my radon mitigation system so loud?

• <div><p>Your radon mitigation system may be loud because it&rsquo;s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.</p></div>

Q: How much does a radon mitigation system cost?

• <div><p>The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.</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>

Q: Can I perform radon gas abatement myself?

• <div><p>While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.</p></div>

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

*The Angi rating for Radon Detection And Reduction companies in Northwest, 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 Northwest, 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 May 30, 2026

Reviewed in May 2026
We have used Chris in the past to remove a few trees in our backyard and he has done a great job. We’ve recommended him to our neighbors as well and are confident in his assessments, plans and pricing!
Chris's Clean Cut Tree Service
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Reviewed in April 2026
Great experience working with Samuel and Alberto. I had them check some bushes on both of the Lansdowne entrances signs that developed mold, and they handled everything professionally from start to finish. The bushes were large (around 8 ft) with big stumps, and they removed them carefully and...
Monkey Junction Tree Services
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Reviewed in December 2025
Joe was extremely efficient and very kind and helpful. His work was fast and exceptional! Would highly recommend Deck Doctors!
Deck Doctors and Construction
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Reviewed in July 2025
Ryan and the proficient team at RW Housing performed a deep clean for our AirBnB and the house looked amazing and smelled great. They look care of every small detail including cleaning the rugs. We have since hired them for turnover services for the same home and it's been a nice,...
RW Housing, LLC
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Reviewed in June 2023
Tree removal and stump grinding. Did a great job removing and with clean up.
Monster Tree Service of Cape Fear
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Reviewed in November 2022
Ryan was incredibly helpful from the inspection through replacement. He helped me navigate my insurance claim and HOA paperwork. Rapid responses to text messages, e-mails and calls. The roof itself was replaced in a day and I knew what to expect from beginning to end. Through cleanup as...
Rice Coastal, Inc.
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Reviewed in June 2022
He was very knowledgeable about raccoons. Set baited traps in the attic and trapped 2 babies reset 2 baited traps in attic and 1 outside near the path the mama was using and trapped her. He took them away to farm land he had access to and released them. No more raccoons seen or heard since....
East Coast Wildlife Damage Control
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Reviewed in January 2022
Jason, the owner was the inspector. He carefully explained everything in his report. He answered all my questions and told me contact him (which I did) with any other questions or concerns I had. He also performed a radon test as well as termite inspection.
Aycock Home Inspections
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Reviewed in October 2021
Callahan installed my well and filter system (filters, R.O. and ultraviolet antibacterial unit) twenty years ago and has maintained ithem since then. Their work is excellent, they have always arrived promptly to fix any problem, they are very courteous and their charges are reasonable. I highly...
Callahan's Well Drilling, Inc.
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Reviewed in August 2021
Quick response to inquiries and great customer service! We will definitely use this removal service again and will recommend to others!
Big Unit & Sons Hauling
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Find Radon detection and reduction specialists in Northwest

Johnson Properties and Inspections, Ltd.

4.7(

)

Serving Northwest, NC and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"Very prompt reply and scheduling. We had to reschedule as it was a roof inspection and we had major rainfall on the first planned day. Don stayed in contact with me and did a great job. Nice guy too."

Response time7 hrs

4 neighbors recently requested a quote

Recommended by93%of homeowners

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Elite Home Inspections, LLC

5.0(

)

Serving Northwest, NC and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"This was a very thorough inspection. I was very impressed by their professionalism and knowledge. They answered all questions. This is a very trustworthy company! I would recommend them to everyone."

5 neighbors recently requested a quote

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M&D Property Solutions

4.5(

)

Serving Northwest, 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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Smart Air Environmental

4.6(

)

Serving Northwest, NC and surrounding areas

In business since 2000

Small jobs welcome

Credit card accepted

"He's very professional, inspires confidence in his work, and he's willing to go above & beyond to exceed expectations."

Response time1 hour

Recommended by100%of homeowners

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Ritter Home Inspection Services, LLC

5.0(

)

Serving Northwest, NC and surrounding areas

In business since 2021

Emergency services offered

Small jobs welcome

"First of all I called this company on a holiday weekend and someone promptly answered my call. Chris spent a lot of time with me throughly answering all my questions. He did the inspection the next workday. I would recommend him to everyone."

Response time30 mins

Response rate95%

Recommended by100%of homeowners

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All States Air Duct Pro

3.1(

236

)

Serving Northwest, 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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Environmental Service Group

New to Angi

Serving Northwest, NC and surrounding areas

In business since 2010

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! We are family owned and operated, so please let us know how our family can take care of yours!\n\n

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Radon Detection and Reduction questions, answered by experts

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

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.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

The Northwest, NC homeowners’ guide to radon detection and reduction services

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