Indoor Air Quality

Radon Testing

Quick Definition

Measurement of cancer-causing radioactive gas that seeps into homes from soil and rock

Radon testing measures levels of this invisible, odorless radioactive gas that naturally occurs in soil and rock. Radon is the second leading cause of lung cancer after smoking, responsible for over 20,000 deaths annually in the United States.

What You Need to Know

Radon enters homes through cracks in foundations, gaps around pipes, and other openings. It accumulates in enclosed spaces, especially basements and lower levels. Any home can have radon problems, regardless of age or construction type.

Why It Matters for Your Home

Long-term radon exposure significantly increases lung cancer risk, even for non-smokers. Children are especially vulnerable because their lungs are still developing. The EPA recommends action when radon levels exceed 4 picocuries per liter.

How to Test for Radon

Professional radon testing involves placing specialized detectors in your home for 2-7 days to measure average radon levels. Long-term testing over 90+ days provides the most accurate assessment of your family's exposure.

When to Get Professional Help

All homes should be tested for radon, especially if you're buying or selling. If levels are elevated, professional radon mitigation systems can reduce levels by up to 99%.

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Related Terms

Indoor Air Quality

Indoor Air Quality (IAQ)

The overall healthiness of air inside your home, affected by pollutants, humidity, and ventilation