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*The Angi rating for Radon Detection And Reduction companies in Dahlgren, VA 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 Dahlgren, VA 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 August 25, 2025

Find Radon detection and reduction specialists in Dahlgren

Avatar for CSI Home and Commercial Services
CSI Home and Commercial Services
4.6(
80
)

Serving Dahlgren, 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
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Avatar for Flood Crew LLC
Flood Crew LLC
4.6(
40
)

Serving Dahlgren, VA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Bill and his team did an excellent job in handling the remediation for water that got into my home. Would highly recommend them given their promptness and general assistance in getting this situation under control."
After carpets were cleaned.
Before and after of Medallion
After color sealed
Apartment carpet cleaning
Drying bathroom wood subfloor from kitchen using indirect control heat, controlled by thermostat we set in place

+57

Recommended by88%of homeowners
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Avatar for Advanced Home Inspection, LLC
Advanced Home Inspection, LLC
4.4(
5
)

Serving Dahlgren, VA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"I use Bradley/Advanced Home Inspections, LLC a-lot! They are fantastic! Never had any issues - always there on time and prompt! Detailed oriented! If something is work with the home he will find!!!"
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Inspection
Inspection
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+4

Response time7 hrs
Response rate97%
Recommended by80%of homeowners
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Radon Detection and Reduction questions, answered by experts

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

Mitigation can take several days depending on home setup, equipment accessibility, and achieving effective diffusion system sealed efficiency.

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.

You can vent radon out of your house sometimes by simply opening a window, but it won’t remove the source, and will likely rise above recommended levels quickly. A professional will be needed to assess your home, and determine the best strategy for radon removal. Active radon sump pumps and soil depressurization systems are often used to forcefully vent the radon from your home.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

The Dahlgren, VA homeowners’ guide to radon detection and reduction services

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