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*The Angi rating for Radon Detection And Reduction companies in Thompson, OH 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 Thompson, OH 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 11, 2026

Find Radon detection and reduction specialists in Thompson

Avatar for Safe Space Home Services LLC
Safe Space Home Services LLC
5.0(
3
)
Radon Gas - AbatementRadon Gas - Testing

Serving Thompson, OH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Contractor was good communicator, friendly, professional, thorough, punctual, knowledgeable."
Radon Mitigation
Radon Mitigation
Radon mitigation
radon mitigation
radon mitigation

+2

7 neighbors recently requested a quote
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Avatar for Ohio Radon Testing and Mitigation Company
Ohio Radon Testing and Mitigation Company
5.0(
6
)
Radon Gas - AbatementRadon Gas - Testing

Serving Thompson, 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
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Avatar for Lion Guard Home Inspections Inc.
Lion Guard Home Inspections Inc.
5.0(
4
)
Radon Gas - AbatementRadon Gas - Testing

Serving Thompson, 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
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Avatar for Banna Home and Property Inspections
Banna Home and Property Inspections
5.0(
3
)
Radon Gas - Testing

Serving Thompson, OH and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"Tom was extremely attentive to our needs and to the details of the inspection. Definitely a positive experience and would highly recommend to other."
Legacy
Roof Inspection
Inspecting Homes
Inspecting Homes
Inspecting Homes

+13

Response time10 mins
Response rate100%
Recommended by66%of homeowners
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Radon Detection and Reduction questions, answered by experts

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.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

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).

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 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 Thompson, 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.

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