Top-rated radon detection and reduction specialists.

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

Q: What level of radon is considered safe or dangerous?

• <div><p>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.</p></div>

Q: Why is radon gas abatement necessary for homes?

• <div><p>Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.</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: Why is my radon mitigation system so loud?

• <div><p>Your radon mitigation system may be loud because it&rsquo;s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.</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 Harrisburg, MO

*The Angi rating for Radon Detection And Reduction companies in Harrisburg, 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 Harrisburg, 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 December 16, 2025

Reviewed in December 2025
This Pro and his team did a great job and promptly handled my need for a fence replacement! Not only did they efficiently demo my existing worn out fence and haul it off, they went on to build a beautiful replacement fence that completely met my needs! The whole neighborhood thinks it is...
SEB Fencing Company
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Reviewed in September 2024
Missouri Metal Roofing, along with Yolanda, Zenon, and the team, did an outstanding job replacing the roof on our house. They were highly professional, maintained a clean work environment, and communicated clearly throughout the process. The attention to detail and quality of their work exceeded...
Missouri Metal Roofing, LLC
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Reviewed in June 2024
Levi responded promptly to our need for repair and he and his crew did a thorough job. We will use them again for home improvement projects.
Slate Elite Exteriors
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Reviewed in April 2023
AC Painting was very professional, timely and friendly. They did excellent work and would hirer them again!
AC PaintingAdvantage, LLC
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Reviewed in December 2022
Brett showed up early for our inspection and prepared knowing exactly what was expected. He kept us informed and let us know what was wrong and what could be an issue in the future as well as the good things he saw. From the very beginning he knew how to treat us as customers and gave the...
Buyers Eyes Home Inspections, LLC
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Reviewed in May 2022
I called Hays heating and Air to help fix my AC and the Guy named Travis that showed up was super helpful and respectful. He explained everything to me and was very fast with his work. I would definitely recommend him to anyone.
Hay's Heating and Air LLC
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Reviewed in December 2021
Lynn Crum worked with the insurance adjuster, pointing out the damaged roof areas and gutter damages. The end result is a beautiful roof, gutters, and interior ceiling repairs done professionally. I will and have recommended the company to several people. Top notch company!
TAPS Exteriors
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Reviewed in August 2021
Deck cleaning and waterproofing turned out great.
CS Maintenance and Home Repair, LLC
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Reviewed in June 2021
They worked fast and left the area clean. They had the right equipment and knew how to use it.
Top Quality Landscaping, LLC
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Reviewed in April 2021
I could not be happier with the work Ryan did installing a new driveway and repairing a fence. He communicated throughout the process and completed the job in the time he said he would and at a great price. Highly recommended. Will definitely be hiring him for any future projects.
Wendt Pro Construction and Landscaping
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Find Radon detection and reduction specialists in Harrisburg

Full Scope Home Inspections

5.0(

)

Serving Harrisburg, MO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Randall went above and beyond what I thought would be done for a home inspection, was willing to crawl into small spaces. He did a very thorough job, and his report was very detailed, and that's why we appreciate his work."

Response time3 hrs

Response rate93%

Recommended by100%of homeowners

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SWAT Environmental, Inc.

4.5(

)

Serving Harrisburg, 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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Braun's Inspection Consultants

4.7(

)

Serving Harrisburg, MO and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Professional and timely service provided. A thorough review by James."

Recommended by100%of homeowners

Serving Harrisburg, 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 Harrisburg, 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

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.

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

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.

Your radon mitigation system may be loud because it’s time to replace it. Any sounds are usually from the inline fan that helps create the vacuum and resulting airflow. If you hear a new, loud mechanical or humming noise from your radon fan, it might be time to replace it. Most fans used in radon mitigation systems last up to 10 years, but may need to be replaced sooner.

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 Harrisburg, 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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What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
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What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.