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

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

Serving Winchester, 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 NextDay Inspect
NextDay Inspect
4.9(
516
)
Radon Gas - Testing

Serving Winchester, 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 SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.4(
77
)
Radon Gas - Abatement

Serving Winchester, VA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Great customer service, was easy to get a quote with exactly what I wanted for a great price. There was some minor quality issues but for the price you couldn’t ask for more. Initial review of the workmanship revealed minor damage to my siding but nothing major. As long as my radon levels go down as much as they have stated, I would defiantly recommend for a fast remediation at a great price!"
Recommended by91%of homeowners
Avatar for CSI Home and Commercial Services
CSI Home and Commercial Services
4.6(
80
)
Radon Gas - AbatementRadon Gas - Testing

Serving Winchester, VA and surrounding areas

In business since 1995

Free estimates

Credit card accepted

"You certainly get what you pay for! While CSI wasn't the cheapest on our list of home inspection and radon testing quotes, the cost was more than reasonable for the level of service that we received. Ron, our home inspector, was fantastic! He arrived early, and I don't think he could have been more thorough than he was! He was very friendly and personable, and was more than willing to answer our questions during the inspection. He went through the entire home with a fine toothed comb! He pointed out defects that he found, and explained things in detail. He also highlighted the positive things he found. Used a drone to inspect the roof and chimney, and thermal imaging to check for hidden moisture. I feel like we have an excellent idea of the condition of the property we are buying, which has done a lot in making us feel more comfortable! The report we receiced within 24 hours was professional and clearly written with appropriate photos attached. Will certainly recommend to others, and will use them for any future home inspection needs we have!"
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+5

Recommended by97%of homeowners
Avatar for Schmid Home Inspections
Schmid Home Inspections
4.6(
4
)
Radon Gas - Testing

Serving Winchester, VA and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I felt I was in good hands when working with Mr. Schmid. He was careful, thorough and knowledgeable doing the inspections, and provided excellent and quick report afterwards. I definitely will be a returning customer and will also recommend him to friends for future home inspection needs."
Response time2 hrs
Recommended by100%of homeowners
Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
5.0(
2
)
Radon Gas - Abatement

Serving Winchester, VA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

SWAT Environmental has keeping homeowners safe from Radon Gas since 1988. We are the nation's largest Radon Mitigation company but we are local operated and give each customer personal, high class service! Installing over 150,000 mitigation systems, SWAT is the industry leader in Radon Awareness and Mitigation. Call us today to schedule your radon mitigation system installation for less than the cost of most major home appliances!

Response time12 hrs
Recommended by100%of homeowners
Avatar for Valley Radon Solutions, LLC
Valley Radon Solutions, LLC
5.0(
1
)
Radon Gas - AbatementRadon Gas - Testing

Serving Winchester, VA and surrounding areas

In business since 2021

Free estimates

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. Valley Radon Solutions, LLC strives to maintain our reputation as a high quality, very service oriented company with our main focus being on customer satisfaction.

Radon Mitigation System
Radon Mitigation System
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

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).

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

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

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 Winchester, 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.