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*The Angi rating for Radon Detection And Reduction companies in Lake Tomahawk, 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.

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Last update on November 10, 2025

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

Serving Lake Tomahawk, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Warranties offered

Small jobs welcome

"Mike did an awesome job. Very professional very personable. I applaud him as a professional and yes I would use him again and I would recommend him."
Brick Exterior Radon Mitigation
Exterior Radon Mitigation
Brick Exterior Mitigation
Exterior Radon Mitigation
Exterior Radon Mitigation

+8

Response time2 days
3 neighbors recently requested a quote
Recommended by85%of homeowners
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Radon Detection and Reduction questions, answered by experts

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 average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

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.

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 Lake Tomahawk, WI homeowners’ guide to radon detection and reduction services

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