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*The Angi rating for Radon Detection And Reduction companies in Hermann, 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 Hermann, 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 August 19, 2026

Find Radon detection and reduction specialists in Hermann

Avatar for Metro Radon Control of St. Louis, LLC
Metro Radon Control of St. Louis, LLC
4.9(
171
)
Radon Gas - Abatement

Serving Hermann, 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 Hermann, 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 Mid MO Inspectors
Mid MO Inspectors
0.0(
7
)
Radon Gas - Testing

Serving Hermann, MO and surrounding areas

In business since 2005

Free estimates

Mid MO Inspectors will provide you or your business with a full service approach to all your inspection needs. Please feel confident in contacting Mid MO Inspectors for your next inspection.

3 story large home
Ranch Style
Home Inspections
Home Inspections
Home Inspections

+5

Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

The fan that pulls the radon out of the air needs to run continuously, so you may see an increase in your electric bill once you install the mitigation system. Additionally, you may see an increase in your heating or cooling bills, as the fan can cause some loss of hot or cool air.

Installation typically takes 1-2 days, depending on the system and property layout.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

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.

Long-term exposure increases lung cancer risks. Prolonged homestay individuals and smokers encounter heightened vulnerability and exposure concerns.

The Hermann, MO 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.

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