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Top-Rated Radon detection and reduction specialists in Madison - Updated Nov 2026

Avatar for Ohio Radon Testing and Mitigation Company
Ohio Radon Testing and Mitigation Company
5.0(
6
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, OH and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"They brought my number down substantially. I had a really good experience about them. The company tells you exactly what's going on and supported the fact with documents. The workers were personable and work fast. I would recommend them to everybody and I'll definitely use them again"
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install
Mitigation Install

+1

Recommended by100%of homeowners
Avatar for Lion Guard Home Inspections Inc.
Lion Guard Home Inspections Inc.
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, OH and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"It was very good! Everything was explained to me and he was very thorough. He was very easy to work with and prompt in getting back with me when I inquired about the inspection. He came out to do the inspection just 2 days after my calling him."
Recommended by100%of homeowners
Avatar for Brownstone Solutions, LLC
Brownstone Solutions, LLC
5.0(
3
)
Radon Gas - AbatementRadon Gas - Testing

Serving Madison, OH and surrounding areas

In business since 2015

Free estimates

Credit card accepted

InterNACHI certified, Brownstone Solutions is one of the most knowledgeable, professional, and respected home inspection company in the region. We focus on the quality of our work, and we are standing by ready to serve. We also offer mold testing and radon testing. The owner is a 10 year veteran of the U.S. Navy.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Recommended by100%of homeowners
Radon Detection and Reduction FAQs, 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.

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

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

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.

The Madison, OH 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.