Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in O Fallon, MO

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in O Fallon, MO?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in O Fallon

Avatar for Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
4.7(
167
)

Serving O Fallon, MO and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Everything went well. The repaired cracks have not leaked during recent storms. In addition, the radon test results after

the mitigation system was installed showed it is working and the radon in our basement is now at a very low level."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

10 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Metro Radon Control of St. Louis, LLC
Metro Radon Control of St. Louis, LLC
4.9(
171
)

Serving O Fallon, MO and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Mark and his team are very knowledgeable, professional and hard working. Everything went great! Right from our first contact, Mark was very helpful and listened to our questions and answered them thoroughly. We received out quote quickly. The day they came out to install the equipment to mitigate the radon, they arrived on time and they were here the length of time they had told us they would be here. They set up another radon test before they left and came back several days later to pick it up. The radon was mitigated perfectly! We are very happy with Mark and his company, Metro Radon Control of St. Louis. Hire them with confidence!!"
Response time6 hrs
Recommended by99%of homeowners
Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)

Serving O Fallon, 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
Avatar for D and S Home Inspections
D and S Home Inspections
5.0(
9
)

Serving O Fallon, MO and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Scott was on time. He is a very personal person. Shows you different items he finds during his inspection. His Technology is above par, great part is he doesn't charge extra for this."
No so handy handy man repair
ASHI
InterNACHI BUY BACK
Response time2 hrs
Recommended by100%of homeowners
Avatar for Scope Environmental
Scope Environmental
5.0(
15
)

Serving O Fallon, 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
Avatar for Proper Environmental
Proper Environmental
5.0(
6
)

Serving O Fallon, MO and surrounding areas

Free estimates

Credit card accepted

"It went great! They set up a system in my parent's house and they mitigated the radon down to a save level. They did a test before and after, and I was satisfied with the results. Proper Environmental did a thorough job and would recommend this company to anyone!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

Recommended by100%of homeowners
Avatar for EnviroTech Radon Solutions
EnviroTech Radon Solutions
4.4(
7
)

Serving O Fallon, MO and surrounding areas

In business since 2018

"Envirotech is a professional, knowledgeable & competent company. . The owner is very accessible & explained all of the radon options for midigation throughly. High quality work was completed in a timely fashion. I would highly recommend this company for your radon testing & midigation needs."
Exterior Fan Location
Exterior Fan Location
Roof Exhaust Radon System
Interior Garage Routing
Fan located in attic and exhausted through roof

+40

Response time1 day
Recommended by100%of homeowners
Avatar for Greensmith Home Inspection, LLC
Greensmith Home Inspection, LLC
4.6(
36
)

Serving O Fallon, MO and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"We wanted the house inspected because we were buying it. He did a thorough enough job of examining the outside and inside of the house. One thing that he didn't do... He didn't pull some building materials away from the basement storage area to examine the basement wall for cracks. I was a little surprised about that. He also didn't notice that the basement door was getting stuck when we tried to close it. We noticed it ourselves and asked the current homeowner's to fix it. However, he did notice the slow drain in the master bath. A leaky window in the master bedroom and that their was no GFCI outlet in one of the bathrooms. He tested for water/dampness in all the rooms and all of the windows. He communicated well and arrived on time. He took about an hour outside and inside. Also looked for termite problems in the house as well. Overall, I would hire him again."
Appliance Serial Number Capture
Response time2 hrs
Recommended by93%of homeowners
Showing 1-10 of 22
Radon Detection and Reduction questions, answered by experts

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

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.

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.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

The O Fallon, 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.