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

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

Find Radon detection and reduction specialists in Maryville

Avatar for National Radon Defense Midwest
National Radon Defense Midwest
4.7(
51
)
Radon Gas - AbatementRadon Gas - Testing

Serving Maryville, MO and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"RADON SYSTEM WAS NOT WORKING. (Installed by another company years ago). The phone contact was pleasant and efficient. The Technician came on the agreed day and the agreed time: he explained what was wrong, explained the options, then repaired the system so it is working better than it did when first installed."
Exterior Exhaust Fan with Cover
Exterior Exhaust Fan and Discharge
Crawlspace Encapsulation with Radon Mitigation
Cleverly Installed Extraction Point
Interior Exhaust Fan

+15

Response time1 day
44 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Maryville, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"I would definitely recommend this company to anyone!!! I hired them and the job was done nicely, Dan O'Brien was the technician who took care of the project and he did an excellent job, he answered all of my questions and explained to me everything related to Radon gas. When he finished setting everything up and the job was completed all the working area looked super clean and the installation looks just like it is part of the house and that has been there forever. This is what I call a Perfect and Complete execution of a Radon gas mitigation project."
Recommended by97%of homeowners
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Avatar for The Environmental Guys LLC
The Environmental Guys LLC
New to Angi
Radon Gas - Testing

Serving Maryville, MO and surrounding areas

In business since 2025

Free estimates

Emergency services offered

We test for several different hazardous materials and gas. We also off mold & mildew surface removal and cleaning with environmental friendly cleaners. We do offer free quotes and consulting on remedies for issues to your home or business.

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Radon Detection and Reduction questions, answered by experts

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.

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

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).

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

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 Maryville, 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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