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*The Angi rating for Radon Detection And Reduction companies in Twin Valley, MN 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 Twin Valley, MN 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 February 05, 2026

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

Avatar for River Cities Radon
River Cities Radon
5.0(
7
)
Radon Gas - AbatementRadon Gas - Testing

Serving Twin Valley, MN and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Rick demonstrated a high level of professionalism by arriving punctually, doing a comprehensive assessment, addressing any inquiries, and providing pertinent details. He recommended the most effective positioning of our mitigation system. Following its installation, he conducted testing and then returned one week later to verify that the level was appropriately adjusted. From our perspective, the quality of his work is unmatched. Excellent customer service! If there's a need for this service, River Cities Radon is the place to contact."
Response time12 hrs
11 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for American Waterworks
American Waterworks
4.5(
173
)
Radon Gas - AbatementRadon Gas - Testing

Serving Twin Valley, MN and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"American Waterworks did a great job installing my home's radon remediation system. I highly recommend them for this kind of job."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
569 neighbors recently requested a quote
Recommended by91%of homeowners
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Nordic Companies, Inc.
5.0(
8
)
Radon Gas - Testing

Serving Twin Valley, MN and surrounding areas

In business since 2010

Free estimates

Credit card accepted

I have 13 years of combined construction and inspection experience. I will provide you with great service, a thorough inspection, and a detailed report with pictures and explanations. I will not leave until you are satisfied. There is no need to call multiple inspectors and waste your time making multiple trips to the property, as our inspector also can perform testing for Radon, Mold, Asbestos, Lead, and Allergens.

Response time7 hrs
Recommended by100%of homeowners
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Avatar for Lakes Country Inspections, LLC
Lakes Country Inspections, LLC
5.0(
1
)
Radon Gas - Testing

Serving Twin Valley, MN and surrounding areas

In business since 2017

Free estimates

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Response time2 days
Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

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.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

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.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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 Twin Valley, MN 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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