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*The Angi rating for Radon Detection And Reduction companies in Hennessey, OK 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 Hennessey, OK 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 January 14, 2026

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Avatar for A-1 Inspections, LLC
A-1 Inspections, LLC
5.0(
1
)
Radon Gas - Testing

Serving Hennessey, OK and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"Joseph is the only inspector I use. He is very professional and friendly. Joseph is always on time and is very happy to answer any questions."
Home Inspections
Home Inspections
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+19

Response time8 hrs
Recommended by100%of homeowners
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Avatar for Marshall Environmental Management - Home Facebook
Marshall Environmental Management - Home Facebook
New to Angi
Radon Gas - Testing

Serving Hennessey, OK and surrounding areas

In business since 1987

Free estimates

Credit card accepted

We are the premier professional industrial hygiene and consulting company in Oklahoma City. We specialize in asbestos, indoor air quality, lead and occupational monitoring. We offer the highest quality and most attentive customer service. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. \n\nMold Inspections start at $550. Please call us today to schedule your appointment!

Response time1 day
Response rate100%
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Radon Detection and Reduction questions, answered by experts

The fan that pulls the radon out of the air needs to run continuously, so you may see an increase in your electric bill once you install the mitigation system. Additionally, you may see an increase in your heating or cooling bills, as the fan can cause some loss of hot or cool air.

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.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Installing a mitigation system reduces radon levels, which can cause lung cancer, providing peace of mind and long-term health benefits. It can also increase your home’s value, as many buyers prefer properties with radon safety measures in place. The investment is relatively low compared to the potential health risks associated with prolonged radon exposure.

Yes, many systems include warranties for performance. Confirm terms with your installer.

The Hennessey, OK 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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