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*The Angi rating for Radon Detection And Reduction companies in Marion, WI 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 Marion, WI 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 May 07, 2026

Find Radon detection and reduction specialists in Marion

Avatar for Fox Valley Radon LLC
Fox Valley Radon LLC
4.9(
15
)

Serving Marion, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Warranties offered

Small jobs welcome

"MIke was a breeze to work with and very knowledgeable when it came to testing our home for radon. Super impressed by his professionalism!"
Brick Exterior Radon Mitigation
Exterior Radon Mitigation
Brick Exterior Mitigation
Exterior Radon Mitigation
Exterior Radon Mitigation

+8

Response time2 days
2 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for Lifetime Home Services
Lifetime Home Services
4.8(
130
)

Serving Marion, WI and surrounding areas

In business since 1993

Free estimates

Credit card accepted

"I had a radon mitigation system installed on Wednesday. The reason I went with your company was because of Ashley. When she met with us to go over the results of our testing and propose a solution I was greatly impressed with her knowledge of the system she was proposing. I had a number of questions and received a couple of other quotes but I always came back to Ashley. And I'm glad I did. Then there was Luke. I couldn't have asked for a better installer. He totally explained what he was going to do and did it expertly. I had a number of things that I asked him to change in the garage and he gladly did it even though it meant it was going to take longer to do. The main change was redirecting the PVC line to come out on the opposite side of my garage roof. That meant he had to climb up on to my steep garage roof in almost darkness. He did a great job and I would highly recommend Lifetime to anyone contemplating a radon mitigation system"
Response time1 day
Response rate88%
17 neighbors recently requested a quote
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Radon Detection and Reduction questions, answered by experts

The lifespan of a radon mitigation system depends on the type of system and its maintenance. With proper care, a system can last for many decades. Passive systems tend to last longer as they have fewer components that require replacement. Active systems, which have more moving parts like fans, generally have a shorter lifespan. For instance, water filtration devices and active pressurization systems require more frequent maintenance. While the system as a whole is durable, the radon fan in an active system typically has a lifespan of 5 to 10 years and will need to be replaced. As long as the fan is working, the mitigation system should function correctly.

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

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

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.

The Marion, WI 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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