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*The Angi rating for Radon Detection And Reduction companies in Sioux City, IA 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 Sioux City, IA 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 August 01, 2026

Top-Rated Radon detection and reduction specialists in Sioux City - Updated Nov 2026

Avatar for Iowa Radon Defense Northwest
Iowa Radon Defense Northwest
4.7(
54
)
Radon Gas - AbatementRadon Gas - Testing

Serving Sioux City, IA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"We needed to reduce the Radon in our basement. They were very patient, explained what they would do and how it would be done. The installed was VERY professional and knew the work that needed done. He was polite and efficient. He has done this work many years and completed the work. They guaranteed the Radon to be 4.0 and under."
Interior Exhaust Fan
Crawlspace Encapsulation with Radon Mitigation
Exterior Exhaust Fan and Discharge
Exterior Exhaust Fan with Cover
Roof Penetration Discharge Pipe with Roof Boot

+23

Response time1 day
18 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
13
)
Radon Gas - Abatement

Serving Sioux City, IA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Our radon specialist, Tim Milledge, was terrific. Communication was excellent, he arrived on time, was professional, courteous and experienced. He was able to run the pipe line and place the other equipment in a way to be unobtrusive and did nothing to detract from the aesthetics of our property. He explained post procedures and cleaned up after himself, unusual these days with service providers, and completed the installation quickly and efficiently. We would highly recommend SWAT and, in particular Tim."
Response time1 day
Recommended by100%of homeowners
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Professional House Doctors
New to Angi
Radon Gas - Abatement

Serving Sioux City, IA and surrounding areas

In business since 2006

Free estimates

Credit card accepted

We pride ourselves in providing quality work for all of our customers. Your safety in your home or office is forefront in our minds when we work. We have built several relationships with local business and homeowners that we know will last a lifetime. When looking for a company that can give you peace of mind when working or living in your space look no further then Professional House Doctor.

Response time1 day
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Radon Detection and Reduction FAQs, answered by experts

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.

Options include sub-slab depressurization, crawlspace ventilation, and sealing cracks. Choose based on home construction and radon levels.

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.

No, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

The Sioux City, IA 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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