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*The Angi rating for Radon Detection And Reduction companies in Winnebago, IL 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 Winnebago, IL 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 Winnebago

Avatar for Gardner Services
Gardner Services
4.7(
16
)
Radon Gas - Abatement

Serving Winnebago, IL and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"This is a high quality mold/fungi/fungus testing company, with excellent customer service and follow-up. The phones were picked up on the first call each time, and arranging for an appointment was very easy. They arrived on time, were efficient, informing, and friendly in their work, and brought commercial equipment to perform the test samples. The follow up phone call and email on the test results was good, and they provided a potential remediation plan for us to follow on the test results. The third party lab utilized by them had easy to understand numbers, graphs, and descriptions of what was tested. We will do business with Gardner Services again in the near future, and will recommend them to others."
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+18

Response time8 hrs
7 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for U.S. Waterproofing
U.S. Waterproofing
4.3(
596
)
Radon Gas - Abatement

Serving Winnebago, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."
Radon Mitigation
Radon Mitigation
Basement Waterproofing
Basement Waterproofing
Response time1 day
Response rate100%
23 neighbors recently requested a quote
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Avatar for Radman Radon Testing
Radman Radon Testing
5.0(
7
)
Radon Gas - Abatement

Serving Winnebago, IL and surrounding areas

In business since 2020

Free estimates

Warranties offered

"RADMAN did an outstanding job installing a radon mitigation system in my home. His crew knows what they are doing and the results speak for themselves. Within hours after starting up the system my Radon level went from 20 to less than 1 Picocuurie per liter."
Response time1 day
Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

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

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.

The Winnebago, IL 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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