Radon Mitigation Corporation

BREATHE CLEAN. LIVE BETTER.

Reliable Trusted Quality workmanship at a fair price

The Vision Behind the Service

THE TEAM

Their first venture, AA Marshall Home Inspection Services, launched in 2016. From the start, Aaron and Kimberly have built a client experience that is professional, personal, and rooted in education, trust, and genuine care for every homeowner.


Kimberly’s background as an Account Manager brings structure, organization, and a strong focus on systems and processes. Aaron’s leadership, technical expertise, and ability to simplify complex topics help clients understand their homes and make confident decisions.

Together, they have grown AA Marshall Home Inspection Services into one of Downstate Illinois’ largest and most respected inspection companies. Through the expansion of Radon Mitigation Corporation and Rely Home Solutions, they continue to deliver greater value, safety, and peace of mind to every client they serve.

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Radon Mitigation Corporation

Testing, mitigation, and education focused on healthier indoor air and long-term safety.

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AA Marshall Home Inspection Services

One of Downstate Illinois’ largest and most respected inspection companies, educating and empowering homeowners since 2016.

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Rely Home Solutions

Home solutions you can count on, bringing together trusted people, process, and craftsmanship.

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What We Do

Our Services

Radon Mitigation

Radon is a colorless, odorless gas that can pose serious health risks when levels are elevated. If your home has tested high, our professional mitigation systems are designed to lower radon levels and help protect your family’s long-term health.


Offered Services:  Radon mitigation installs on all foundation types.

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Radon Mitigation Repair

Did your system stop working? No problem. We can help.


Offered Services:  Fan replacement, system performance diagnostics, piping repair and rerouting, ventilation adjustments, system upgrades and component replacement, and radon mitigation system performance inspections.

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Radon Mitigation Concealment

Discreetly protect your home from radon while keeping your system visually unobtrusive. We provide professional concealment solutions that maintain full performance.


Offered Services: Concealment solutions for interior and exterior system routing, vent alignment, and finishing.

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Crawlspace Encapsulation

Why encapsulation? Moisture Control, Improve Air Quality, Energy Efficiency


Offered Services:  -Vapor Barrier Install -Seal Foundation Openings -Insulation -Sump Pump Install -Dehumidifier Install, Spray Foam Installation

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Recommended Radon Testing Equipments

FAQs

We Have Radon Mitigation Experts You Can Trust

  • What is Radon?

    Radon is a colorless, odorless, and tasteless radioactive gas that forms naturally from the decay of uranium in soil, rock, and water. It can enter buildings through cracks, gaps, and other openings in the foundation.

  • Do I need to have radon testing completed if I don’t have a basement:

    Yes. If you are in a hazardous zone, radon is here. The question is whether or not the home is sealed up properly. 51% of homes tested in this area come back higher than EPA standards. Statistics do not point to basements as the highest foundation type for elevated levels.

  • Is radon mitigation effective?

    When properly designed and installed by a licensed radon professional in most cases, radon mitigation systems can be highly effective in reducing indoor radon levels and minimizing radon exposure. However, the effectiveness of mitigation depends on factors such as the type of system installed, the quality of installation, and ongoing maintenance. Regular testing is recommended to ensure that radon levels remain within safe limits.

  • How long does radon mitigation take?

    The duration of radon mitigation installation can vary depending on factors such as the complexity of the system, the size of the building, and any necessary repairs or modifications. In many cases, radon mitigation can be completed within a day or two.

  • How much does radon mitigation cost?

    The cost of radon mitigation can vary depending on factors such as the size and layout of the building, the type of mitigation system required, and the extent of any necessary repairs or modifications. On average, radon mitigation costs range from a $700 hundred to a few thousand dollars.

  • Can radon be mitigated in existing homes?

    Yes, radon mitigation systems can be installed in existing homes to reduce indoor radon levels. Mitigation techniques may vary depending on the design and construction of the building, as well as the severity of the radon problem.

  • How do I know if I need radon mitigation?

    The only way to know if your home has elevated radon levels is to test for it. Radon testing kits are available for purchase and can be used to measure radon concentrations in indoor air. If test results indicate radon levels above the recommended action level (usually 4 picocuries per liter or higher), mitigation may be necessary. If you are involved in a real estate transaction, you should have your testing conducted by a licensed radon measurement technician or professional.

  • What is radon mitigation?

    Radon mitigation involves techniques and systems designed to reduce indoor radon levels and minimize radon exposure. Common mitigation methods include sub-slab depressurization, which involves installing a ventilation system to draw radon gas from beneath the building and vent it safely to the outdoors.

  • How does radon enter buildings?

    Radon gas can enter buildings through openings in the foundation, such as cracks in the concrete slab, gaps around pipes and utility lines, sump pump pits, and construction joints. It can also seep through porous materials like concrete, bricks, and floorboards.

  • Why is radon a concern?

    Radon is the second leading cause of lung cancer after smoking and is estimated to be responsible for thousands of lung cancer deaths each year. Long-term exposure to elevated levels of radon can increase the risk of developing lung cancer, particularly in smokers or individuals with pre-existing respiratory conditions.

Blog Post

News & Articles

Illinois Radon Testing Requirements for Daycare Centers
March 9, 2026
Learn Illinois radon testing requirements for daycare centers. Discover testing rules, frequency, licensed professionals, and safety steps to protect children.
February 2, 2026
In this guide, we’ll cover the top 5 effective ways to prevent radon build-up in homes, using simple language and proven methods.
January 26, 2026
Buying or owning a home is one of the biggest investments most people make. Homeowners think about things like roof repairs, plumbing issues, and heating systems. But there is one serious danger that many people don’t think about at all, radon gas . Radon is a hidden health risk that can be present in any home, new or old. You can’t see it, smell it, or taste it. The only way to know if radon is in your home is through testing. That’s why radon testing is crucial for every homeowner’s safety . In this article, we’ll explain what radon is, why it’s dangerous, how it gets into homes, and why testing is so important for families across the United States. What Is Radon Gas? Radon is a naturally occurring radioactive gas . It forms when uranium in soil and rock breaks down. This gas moves up through the ground and can enter buildings through small cracks and openings. Radon is found all over the United States. It does not matter where you live, urban, suburban, or rural areas can all have high radon levels. Even homes next to each other can have very different radon readings. Because radon is invisible and odorless, many homeowners have no idea they are breathing it every day. Why Is Radon Dangerous? Radon becomes dangerous when it builds up inside a home. When people breathe radon gas, radioactive particles can damage the lungs over time. According to the U.S. Environmental Protection Agency (EPA), radon is the second leading cause of lung cancer in the United States , after smoking. It is the leading cause of lung cancer among non-smokers. The risk increases the longer someone is exposed and the higher the radon level in the home. Children and elderly adults may be especially vulnerable because they spend more time indoors. How Does Radon Get Into Homes? Radon enters homes from the ground below. It moves through soil and finds its way inside through: Cracks in concrete floors or walls Gaps around pipes or wiring Sump pits and floor drains Crawl spaces Basement foundations Once inside, radon can become trapped, especially in lower levels like basements. Homes that are tightly sealed for energy efficiency may actually trap radon more easily. Any Home Can Have High Radon Levels Many homeowners believe radon is only a problem in old homes or certain states. This is not true. New homes can have high radon levels Well-built homes can have radon Homes without basements can still be affected Homes in low-risk zones may still test high The EPA recommends testing all homes, regardless of location or age. The only way to know your radon level is to test. Why Radon Testing Is So Important 1. Radon Has No Warning Signs You won’t feel sick right away if your home has radon. There are no headaches, smells, or visible signs. Health effects can take years to appear. Radon testing gives you clear answers before it becomes a long-term health issue. 2. Protects Your Family’s Health Your home should be a safe place. If radon levels are high, everyone living in the home is at risk. Testing helps protect: Children Seniors Pets Guests Knowing your radon level allows you to take action to reduce exposure and create a healthier indoor environment. 3. Testing Is Simple and Affordable Radon testing is quick and non-invasive. Professional radon tests provide accurate results and follow EPA guidelines. Compared to the cost of medical treatment or home repairs later, radon testing is a small investment with big benefits. 4. Required During Many Home Sales In many states, radon testing is commonly requested during real estate transactions. Buyers want peace of mind, and sellers benefit from knowing their home’s radon status in advance. Having a recent radon test: Builds trust with buyers Helps avoid last-minute issues Can speed up the selling process 5. Radon Problems Can Be Fixed The good news is that radon can be reduced . If testing shows high levels, professional radon mitigation systems can safely lower radon levels in your home. These systems are proven, effective, and long-lasting when installed by trained professionals. When Should Homeowners Test for Radon? You should consider radon testing if: You’ve never tested your home before You’re buying or selling a home You’ve remodeled or finished a basement You notice changes in airflow or ventilation It’s been more than two years since your last test The EPA recommends keeping indoor radon levels at or below 4.0 pCi/L . Even levels below this may still carry some risk, which is why regular testing is important. Professional Radon Testing vs. DIY Kits DIY radon test kits are available, but they may not always give the most reliable results if used incorrectly. Professional radon testing offers: Accurate equipment Proper placement Certified testing methods Clear, easy-to-understand results For homeowners who want dependable information, professional testing is often the best choice. Long-Term Peace of Mind Radon testing is not just about today, it’s about long-term safety. Knowing your home’s radon level gives you peace of mind and control over your indoor air quality. Once a mitigation system is installed, follow-up testing ensures it continues working properly. This ongoing protection helps keep your family safe year after year. Schedule a professional radon test today with Radon Mitigation Corporation and take the first step toward a safer, healthier home. Frequently Asked Questions (FAQs)
Service Areas

Areas We Serve

Serving Illinois and surrounding communities with expert radon mitigation solutions.

  • Champaign
  • Coles
  • DeKalb
  • DeWitt
  • Douglas
  • Ford
  • Iroquois
  • Kankakee
  • Livingston
  • Logan
  • Macon
  • Marshall
  • McLean
  • Moultrie
  • Peoria
  • Piatt
  • Putnam
  • Tazewell
  • Vermilion
  • Woodford
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