Guarantee & Results

Great Systems,

DuPage Radon Contractors guarantees that the radon mitigation system will reduce your radon to below 4.0 pCi/L on the first try or any necessary adjustments are free. The system is also guaranteed to keep the radon low for five years and all parts have a five-year warranty.




Get a free, no obligation mitigation system design

to Pass

DuPage Radon Contractors' performance warranty guarantees that your system will lower radon to below 4.0 picocuries per liter of air, or any modifications to achieve that level will be free. We’ll even pay for the re-test if we fail the first attempt at lowering your radon test results.

to Perform

Our radon mitigation systems are effective for long-term radon reduction. Your radon level will stay low for at least five years with an operating system, or DuPage Radon Contractors will fix it for free.

Guaranteed Durability

Our Equipment Warranty covers all installed equipment for five years against workmanship or manufacturing defects. Fan replacement is provided as free parts and labor for the first year and free parts for the next four years. All other parts are covered as free parts and labor for five years.

Fine Print

Our fine print is easy to understand and reasonable. There are only four exceptions to our warranty:
1. Damage or alteration of the system done by others or acts of nature
2. Alterations or additions to the foundation structure
3. Obstructions to the suction path, such as a high water table, or damage to items in or below the floor
4. Sources of radon other than soil

Shopping around? Be sure to read the fine print of other companies' warranties.


DuPage Radon Contractors' promised goal is to lower radon levels below 4 pico curies per liter of air, but since all radon is unwanted, we try to produce radon levels as low as is reasonably possible. Each building and radon system yields different results, but here is a sampling of great results we've achieved in several homes.

Did you Know...?

  • 100% Success

    Sometimes, radon mitigation can be tricky. In some situations, it is challenging to get the radon levels low enough. However, over the years, we have always been able to get the radon below 4 pico curies per liter. We’ve even helped other mitigation companies on jobs they could not figure out.

  • 99.6% First Try

    Our first try success rate is exceptionally high. This reduces your time and any delays a second attempt may incur.

  • If Fail, Free Retest

    It happens, even to us, that we cannot get the radon test result levels low enough on the first mitigation attempt. If this happens, we have highly trained experts who will diagnose the issues and make the system adjustments. All at no charge. We will even pay for the retest.

  • Watch Out For “Lifetime” Guarantees

    Many companies’ lifetime warranties have so many exceptions that they don’t really offer much coverage. Sometimes, they only cover parts like PVC pipe that we know last a very long time. Be sure you understand what is and is not covered in competitors’ warranties.

  • What Our Customers Say