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Radon Testing: What You Need to Know

A home inspector conducting radon testing in a residential property, using a radon detector device in a living room setting.

Radon is a colorless, odorless, and tasteless radioactive gas that poses significant health risks, particularly in enclosed spaces where it can accumulate to dangerous levels. Understanding the importance of radon testing, especially in areas prone to higher radon levels, is crucial for maintaining a safe living and working environment. This blog post will cover the health risks associated with radon exposure, how radon testing is performed, radon mitigation strategies, and our specialized services in radon testing at IAQS.

Health Risks of Radon Exposure

Radon is the second leading cause of lung cancer after smoking, according to the U.S. Environmental Protection Agency (EPA). Long-term exposure to radon can lead to the development of lung cancer, with risks increasing based on the radon level and duration of exposure. Everyone is at risk, but smokers exposed to radon have a significantly higher risk of lung cancer.

How Radon Testing Is Performed

Radon testing is the only way to know if your home or workplace has high radon levels. There are two primary methods:

  1. Short-term Testing: This method uses devices placed in the lowest livable area of the building for 2 to 7 days to measure radon levels. It's a quick way to assess the immediate radon exposure.

  2. Long-term Testing: This testing lasts for more than 90 days and provides a more accurate representation of the average annual radon level, accounting for seasonal variations.

At IAQS, we ensure accurate results and appropriate measures if high levels are detected through professional radon testing.

Radon Mitigation Strategies

If high levels of radon are detected, mitigation is necessary to reduce radon levels and minimize health risks. Our common radon mitigation strategies include:

  • Sub-slab Depressurization: Installing a vent pipe and fan system to draw radon from beneath the building and vent it outside.

  • Sealing Cracks and Openings: Reducing radon entry by sealing cracks in floors and walls, and around service pipes.

  • Room Pressurization: Using a fan to create pressure differences that prevent radon from entering the building.

Our Services in Radon Testing

At IAQS, we offer comprehensive radon testing services, utilizing advanced technology and methodologies to accurately assess radon levels in residential and commercial properties. We provide both short-term and long-term testing solutions, followed by expert consultation on mitigation strategies if high radon levels are detected. Our services ensure that radon risks are managed effectively, safeguarding the health of building occupants.


Radon testing is a critical component of indoor air quality assessment, essential for detecting and addressing this invisible health risk. With our expertise in radon testing and mitigation, residents and businesses can ensure their environments are safe and radon levels are kept in check.

For professional radon testing and mitigation services, contact us at IAQS. Our team is dedicated to providing thorough assessments and effective solutions for managing radon risks in your property.

FAQ's (Frequently Asked Questions)

Why Is Radon Testing Important?

Radon testing is important because radon is a radioactive gas that can cause lung cancer, and it's undetectable by sight, smell, or taste. Testing is the only way to know if your home or business has dangerous levels of radon, ensuring you can take necessary actions to protect your health.

How Often Should Radon Testing Be Conducted?

It's recommended to conduct radon testing every two years or as part of a home inspection when buying or selling a property. Additionally, testing should be repeated after any significant renovations or changes to the building's foundation or HVAC system.

What Is Involved in Radon Testing by IAQS?

Radon testing by IAQS involves placing radon detectors in the lowest habitable areas of the property for a specified period, typically 2-7 days for short-term testing or up to 90 days for long-term testing. These detectors measure the levels of radon in the air, which are then analyzed to assess the radon risk.

What Happens If High Levels of Radon Are Detected?

If high levels of radon are detected, IAQS will recommend and can help coordinate radon mitigation strategies to reduce radon levels to a safe concentration. This might include installing radon reduction systems like sub-slab depressurization or improving the building's ventilation.

Are There Legal Requirements for Radon Testing in Homes and Businesses?

Legal requirements for radon testing vary by location. In some areas, radon testing is required during real estate transactions or in schools and workplaces. IAQS can provide guidance on the specific legal requirements for radon testing in your area and ensure compliance with all regulations.

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