Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Marion, WI

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Marion, WI?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in Marion, WI

*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
Request Quote
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
Request Quote
Radon Detection and Reduction questions, answered by experts

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

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.

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).

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.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

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.

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"