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Verified Reviews for Radon Detection And Reduction pros in Onawa, IA

*The Angi rating for Radon Detection And Reduction companies in Onawa, 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 Onawa, 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 May 09, 2026

Find Radon detection and reduction specialists in Onawa

Avatar for National Radon Defense Midwest
National Radon Defense Midwest
4.7(
51
)

Serving Onawa, IA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"National Radon Defense Midwest employees were very knowledgeable and helpful. As we were selling our house we discovered that we had high radon readings and needed to mitigate the problem. They explained to us the process and clearly identified what they would recommend to resolve the issue. We thought it was very reasonably priced and feel confident intheir products, staff and installation"
Exterior Exhaust Fan with Cover
Exterior Exhaust Fan and Discharge
Crawlspace Encapsulation with Radon Mitigation
Cleverly Installed Extraction Point
Interior Exhaust Fan

+15

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

Serving Onawa, IA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"They did a great job with the installation and made sure the Radon was under the level it needed to be. He had to make a couple of trips to make that happen but was very polite and profession through the whole process."
Response time1 day
Recommended by100%of homeowners
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Avatar for Home Sweet Home Inspect Iowa Facebook
Home Sweet Home Inspect Iowa Facebook
4.8(
12
)

Serving Onawa, IA and surrounding areas

In business since 2020

Free estimates

Small jobs welcome

"Luis was very polite and professional! He explained the issues so I could understand. I would absolutely recommend him to others!"
Roof Inspection
Venting conduit
Company Logo
A service
Promotions.Because you deserve it!

+11

Response time3 hrs
Response rate88%
Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

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 soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

Your radon fan needs to operate 24/7 to be effective. The only time the fan isn't operating is during its replacement. Radon levels in the home can increase within hours if the fan stops working or something obstructs the stack vent. Fortunately, radon systems require no downtime maintenance between fan changes.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

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 Onawa, 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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