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*The Angi rating for Radon Detection And Reduction companies in Robertsville, MO 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 Robertsville, MO 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 March 22, 2026

Find Radon detection and reduction specialists in Robertsville

Avatar for Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
4.7(
167
)
Radon Gas - AbatementRadon Gas - Testing

Serving Robertsville, MO and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Quacker's Waterproofing was wonderful. When they came for the estimate, they were fast and no nonsense. They weren't trying to convince me of things that needed doing or dramatizing the work for more money. When I had questions about the work, they didn't make me feel dumb but took extra time out of their day so that I had peace of mind with my foundation. I hope to never need their help again, but I will definitely call them if I do. Special kudos to Rob!"
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+1

13 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for ATM Home Inspection, LLC
ATM Home Inspection, LLC
4.8(
40
)
Radon Gas - Testing

Serving Robertsville, MO and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Very knowledgeable and thorough. Climbed up and looked at the roof even though it was pouring rain. Very patient - explained every detail to the buyers. Inspection report was clear and noted everything we had discussed. Excellent job."
Response time50 mins
Response rate89%
1 neighbors recently requested a quote
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Avatar for Metro Radon Control of St. Louis, LLC
Metro Radon Control of St. Louis, LLC
4.9(
171
)
Radon Gas - Abatement

Serving Robertsville, MO and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"He was very professional and courteous. He brought a radon gas monitor in my home to test radon levels and he said that everything was okay. And I didn’t have a problem with radon."
Response time6 hrs
Recommended by99%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Robertsville, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Overall everything was pretty good. I felt the installation could have looked much cleaner but it is fine. I still haven't re tested to see what my radon levels are now."
Recommended by97%of homeowners
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Avatar for Scope Environmental
Scope Environmental
5.0(
15
)
Radon Gas - Testing

Serving Robertsville, MO and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

"I used Scope Environmental recently to test floor tile and the underlying mastic to determine if either contained asbestos. I selected Scope because Jeff was very responsive, professional, independent of the abatement companies and his price was competitive. Jeff suggested testing both the tiles and mastic. The tiles tested positive for asbestos but the mastic contained no asbestos. As a result, I saved considerable expense by abating the tiles only and not the mastic so I also used Scope again for the post abatement air testing rather than the abatement company. I would hire Scope again for material and air testing for asbestos, mold or any other potentially toxic materials."
Black mold inside closet
Mold growth in HVAC Closet
Asbestos Flooring
Floor sample collection
Asbestos Adhesive

+10

Response time4 hrs
Response rate96%
Recommended by73%of homeowners
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Radon Detection and Reduction questions, 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.

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 cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

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.

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 Robertsville, MO homeowners’ guide to radon detection and reduction services

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