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

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

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I used Radon Abetment Services LLC to install a radon system in my basement. John and his team were excellent and I highly recommend them to anybody with this need. John was able via video over phone identify where the system should go. His team was extremely professional and courteous. The installation took a day and the improvement in radon levels was remarkable. We would absolutely use them again."
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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 Potomac Falls, 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."
12 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Radon Experts of VA, LLC
Radon Experts of VA, LLC
4.9(
83
)
Radon Gas - Abatement

Serving Potomac Falls, 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 Potomac Falls, 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."
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Additional Photos
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Recommended by100%of homeowners
Avatar for Water Damage America
Water Damage America
5.0(
100
)
Radon Gas - AbatementRadon Gas - Testing

Serving Potomac Falls, VA and surrounding areas

In business since 2014

Free estimates

Emergency services offered

Water Damage America provides the best and most reliable restoration services, we sustain our business on quality and integrity. We are experts in Water Damage and Water Mitigation Services. We are committed to quality from the beginning to the end of your project. We look forward to earning your business. We always work according to IICRC standards in restoration.\nWe are always available 24/7 for our valuable people to put them out of any Water Damage-related emergency.\n

Recommended by98%of homeowners
Avatar for Dro Services, LLC
Dro Services, LLC
4.3(
39
)
Radon Gas - Testing

Serving Potomac Falls, VA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"The service provider was administering a test that he was not proficient in so did not ask the proper questions before coming so had to cone back a second time."
 HOME INSPECTION MCLEAN VA
inspect for wood rot
Inspect sump at a/c not hooked up
inspecting for hand rail
inspect for trim bushes

+8

Response time2 hrs
Response rate100%
Recommended by87%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

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.

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.

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.

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.

The Potomac Falls, 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.