Radon Testing: What Every Homeowner Needs to Know

Radon gas is a silent intruder in many homes, linking to serious health issues. Our guide walks you through testing methods, safe levels, and must-know mitigation strategies to maintain a healthy living environment.

Why Is Radon Testing Important?

Radon is the second leading cause of lung cancer overall and the number one cause among non-smokers. It’s a naturally occurring radioactive gas that can infiltrate your home through cracks in the foundation or other openings. Testing is the only way to determine whether radon poses a threat in your home as Radon is an invisible, odorless gas.

How to Test for Radon in Your Home

Several testing options are available, ranging from simple DIY kits to professional monitoring devices. The two main approaches are:

• Short Term Test Kits: Measure radon levels over 2–7 days. Ideal for quick snapshots, especially during real estate transactions.
• Long Term Electronic Monitors: Continuously track radon fluctuations over weeks or months, offering a more accurate representation.

Short-term tests can be done with affordable DIY kits. However, these kits are often imprecise and may not account for changing environmental factors or ventilation habits. For a clearer and more accurate understanding of potential risks, long-term monitoring is recommended, ideally conducted by a professional.

Understanding Radon Levels: What Is Safe?

Radon concentration is measured in picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends mitigation if levels exceed 4.0 pCi/L. For optimal safety, aim for levels below 2.0 pCi/L. It's important to note that radon levels can fluctuate, so ongoing monitoring may be necessary.

Radon exposure does not cause immediate symptoms, making it hard to detect without testing. Over time, however, prolonged exposure can lead to lung cancer. Symptoms of radon-induced lung cancer may include a persistent cough, shortness of breath, chest pain, hoarseness, frequent respiratory infections, coughing up blood, fatigue, or unexplained weight loss. If you experience these symptoms and have been exposed to radon or smoke, consult a health care professional immediately. 

How to Mitigate Radon in Your Home

If testing reveals elevated radon levels, mitigation is essential. The most common approach is installing an active sub-slab depressurization system, which involves:

1. Installing a pipe beneath the foundation to draw out radon gas.
2. Adding a fan to redirect radon outside, above your roofline.
3. Sealing cracks in the foundation or other potential entry points.

These solutions are energy efficient and often cost between $1,200 and $1,500 to implement. Annual maintenance costs are minimal, typically under $100.

FAQs About Radon Testing

How often should I test for radon?

Test every two years or after major renovations, foundation work, or changes to your HVAC system.

Can I test for radon myself?

Yes, DIY kits are simple and affordable. For more precise data, consider hiring a certified radon professional for long-term monitoring.

Are radon levels higher in certain areas?

Yes, homes in regions with uranium rich soil are at higher risk. Virginia, Maryland, and DC often show varying radon levels depending on soil composition and building conditions.

Conclusion: Take Action Today

Radon testing is a small investment toward ensuring the health and safety of your family. Whether you’re buying a home or maintaining your current one, make testing a priority to stay informed and protected. Take action today, your health depends on it!