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Verified Reviews for Radon Detection And Reduction pros in Hermann, MO

*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 April 14, 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
)

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
)

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
)

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

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.

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.

Yes, many systems include warranties for performance. Confirm terms with your installer.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

Mitigation reduces radon levels, protecting your health and complying with safety standards.

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.

See all articles