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Best radon detection and reduction specialists near Fairfax, VA

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Top-Rated Radon detection and reduction specialists in Fairfax - Updated Nov 2026

Avatar for Radon Abatement Services
Radon Abatement Services
4.9(
257
)
Radon Gas - Abatement

Serving Fairfax, VA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Radon Abatement services is a reliable dependable superb company. I have had an excellent experience from start to finish. Scheduling was easy and expeditious, service was professionally and very well done. Most importantly, Radon is gone with its in-house level reduced to almost its outside level. John Swett was very helpful and kindly answered all my emails and quickly addressed every concern I had. This project could not have been done better."
Additional Photos
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Radon Abatement Services, LLC
Radon Abatement Services, LLC
4.6(
135
)
Radon Gas - Abatement

Serving Fairfax, VA and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quick response

"I'm completely satisfied with the work that John's team did. They were extremely professional and knowledgeable. The workmanship is superb. Best of all, the system works as promised and reduced the radon concentration based on subsequent tests. I could not recommend them more highly."
11 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for NextDay Inspect
NextDay Inspect
4.9(
516
)
Radon Gas - Testing

Serving Fairfax, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"It all went very well Azmi came out and checked all areas of my home for Mold, particulate, and Radon as well as other gases, we opted for complete screening but they offer all size packages"
Inspections with Matthew
Inspections with Larry
Inspections with Dimitri
Inspections with Rhonda
Cracks in the Foundation- Here we find moderate cracks in the foundation, with evidence that they've been repaired before.

+738

Response time8 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for SERVPRO of Springfield/Mt Vernon
SERVPRO of Springfield/Mt Vernon
4.6(
8
)
Radon Gas - Testing

Serving Fairfax, VA and surrounding areas

Approved

In business since 2009

Emergency services offered

Warranties offered

As a trusted leader in the restoration industry, SERVPRO of Springfield / Mt. Vernon is a locally owned and operated business that is determined to provide a fast response and 24-hour service to disasters of all types and sizes. All our technicians are highly trained, equipped with an extensive variety of advanced tools, and have an abundance of experience to deal with various disasters and to manage your restoration and construction needs. We posses a class A General Contractors license for VA. No job is to big or to small for us. We are a full service restoration - re-construction company. We specialize in emergency restoration, asbestos abatement and construction services. From a simple painting job, flooring installation to full kitchen and bathrooms remodeling, we do it all.

Drywall repair - after
Kitchen remodeling
Water damage project aft er being dried out
Drywall repair - before
Kitchen remodeling

+37

Response time1 day
1 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Radon Experts of VA, LLC
Radon Experts of VA, LLC
4.9(
83
)
Radon Gas - Abatement

Serving Fairfax, VA and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"They were polite and quick to get the work done. The first installation was not sufficient to reduce the radon levels but they came out a second time, free of charge, to make the necessary changes. The final result was more than satisfactory."
external
components
Internal Part
exterior
External part

+23

Recommended by98%of homeowners
Dragon Ridge Home Inspections
5.0(
8
)
Radon Gas - AbatementRadon Gas - Testing

Serving Fairfax, VA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"JT of Dragon Ridge performed a Home Inspection and Radon Testing of a SFH in Fairfax, VA. JT arrived before I did, and was already examining the exterior of the property. While we waiting for my realtor to arrive, he grabbed a ladder and did a complete inspection of the roof (not all inspectors do this). Once we got inside, he explained the processes and we began. I shadowed him throughout the whole processes, and it was a wonderful experience. He was very thorough and knowledgeable, and was always willing to provide complete and educational answers about both the good and the bad he found. We got the report later that evening, and it was well written, with plenty of pictures of any deficiencies. He also performed a Radon test, and reported the results a few days later. I spoke to him over the phone about the findings, and he was able to discuss in detail the methodology he used, and the meanings of the testing numbers. Overall, I would highly recommend JT and Dragon Ridge."
Additional Photos
Additional Photos
Additional Photos
Recommended by100%of homeowners
Avatar for Radon Defense, LLC
Radon Defense, LLC
5.0(
5
)
Radon Gas - AbatementRadon Gas - Testing

Serving Fairfax, VA and surrounding areas

In business since 2017

Warranties offered

Small jobs welcome

"I purchased a radon kit to asses the need for radon mitigation but I was educated by the business owner himself who was incredibly knowleadeable and helpful. If we do have radon over the next 6 months after seeing what the averages are from winter to summer, this is the company we will gladly hire!"
Radon Reduction Systems
Radon Reduction Systems
Radon Reduction Systems
Response time30 mins
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

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.

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.

Installing a mitigation system reduces radon levels, which can cause lung cancer, providing peace of mind and long-term health benefits. It can also increase your home’s value, as many buyers prefer properties with radon safety measures in place. The investment is relatively low compared to the potential health risks associated with prolonged radon exposure.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

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.

The Fairfax, VA 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.