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Q: What types of radon mitigation systems are available?

• <div><p>Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.</p></div>

Q: What if radon is still high after mitigation?

• <div><p>You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.</p></div>

Q: Is radon a serious problem?

• <div><p>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).</p></div>

Q: Can I install my own radon mitigation system?

• <div><p>A <a href="https://www.angi.com/articles/can-homeowners-install-radon-mitigation-systems.htm">homeowner can install a radon mitigation system</a> on their own. But it&rsquo;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.</p></div>

Q: How long can you go without a radon fan?

• <div><p>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.</p></div>

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

*The Angi rating for Radon Detection And Reduction companies in Vandalia, 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 Vandalia, 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 20, 2026

Reviewed in April 2026
The crew from Foundation Recovery handled the crawl space encapsulation and foundation stabilization job on my 105 year old American Foursquare with grit, guts and competence - they explained every aspect of the work, updated me on progress and any changes that were needed and also helped me...
Foundation Recovery Systems
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Reviewed in January 2026
They did a excellent job. You can tell they know what they are doing and take pride in doing it right
MENNE HVAC & ELECTRIC
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Reviewed in January 2024
Great! I contacted the company and they came out the next day and gave me an estimate. Had my roof done in 2 days! Really nice and friendly. I've already recommended them to a few friends and will continue to do so.
Partain Roofing LLC
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Reviewed in September 2023
Knew what he was doing..great job and cleaned everything up..
Fleming Exteriors LLC
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Reviewed in May 2022
I will be hiring broken chains property LLC in the near future to do some plumbing work and other things around the house. Broken chains is fairly priced and understanding company that is there to help you.
Broken Chains Properties LLC
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Reviewed in March 2022
We recommend Continental Siding for their quality of work. We had windows installed and we love them! The communication and service were both super fast and I love my windows!
Continental Siding Supply, Inc.
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Reviewed in February 2022
Excellent company, fast response and they get the job done.
Exact Exteriors
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Reviewed in November 2021
Everything he did for me was professional and he always clean it up!
Hometown. Build and Repair
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Reviewed in November 2020
We recommend continental siding because the installers did a wonderful job. The house looks beautiful. We really like the color and it was the right color.
Continental Siding Supply, Inc.
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Reviewed in September 2018
Brian Ousley is the best! Honest, knowledgeable and professional. Extremely reliable.... when he says he’ll be there he will!
New Transitions LLC
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Find Radon detection and reduction specialists in Vandalia

Mid MO Inspectors

0.0(

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Serving Vandalia, 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.

Recommended by100%of homeowners

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S & J Home Inspections - Home Facebook

New to Angi

Serving Vandalia, MO and surrounding areas

In business since 2011

Free estimates

At Amerispec Home Inspections, we are your premiere source for general home inspections. Our company offers the finest in efficiency and quality. When it comes to professionalism and customer service, we are unmatched in the region. For the best of the best, call today for your next inspection!

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Radon Detection and Reduction questions, answered by experts

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

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).

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.

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.

The Vandalia, 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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Mar 18, 2026Mar 18, 2026
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