Radon Testing in NY & CT: Health Risks and What the Numbers Mean

What Every Home Buyer & Homeowner Needs to Know

Radon testing is one of the most important—and most misunderstood—environmental tests performed during a home inspection. Radon is a colorless, odorless radioactive gas that can accumulate inside homes and pose serious long-term health risks.

At Sonic Home Inspections, we provide professional radon testing in New York and Connecticut using reliable, industry-recognized Airthings radon monitoring equipment, helping buyers and homeowners make informed decisions with confidence.

Book Online Get a Quote (914) 255-6510

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🧬 What Is Radon and Why Is It Dangerous?

Radon is a naturally occurring gas that forms when uranium in soil and rock breaks down. It can enter homes through:

  • Foundation cracks

  • Basement floors and walls

  • Crawlspaces

  • Sump pits

  • Utility penetrations

According to health authorities, radon exposure is the second leading cause of lung cancer after smoking—and the leading cause among non-smokers.

Because radon is invisible and odorless, testing is the only way to know if a home is safe.

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📍 Why Radon Testing Is Critical in NY & CT

Homes throughout Westchester County NY, Putnam County NY, and Fairfield County CT are located in areas known to have elevated radon potential.

Important facts:

  • New homes can have high radon levels

  • Older homes can test low—or high

  • Neighboring homes can have completely different results

  • Renovations can change radon levels

Every home should be tested—regardless of age or construction type.

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🧪 How Sonic Home Inspections Performs Radon Testing

Sonic Home Inspections uses Airthings professional radon testing devices, known for accuracy and reliability. Sonic Home Inspection is a certified Radon Lab in NYS Lab ID 12119

Our radon testing process includes:

  • Proper device placement in the lowest living or livable level

  • Closed-house conditions when required

  • Continuous radon monitoring over the test period

  • Clear, documented results you can trust

Airthings equipment provides precise readings, ensuring dependable data for buyers, sellers, and homeowners.

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📊 Understanding Radon Numbers: What Do the Results Mean?

Radon levels are measured in picocuries per liter (pCi/L).

Radon Result Breakdown:

  • Below 2.0 pCi/L – Low risk

  • 2.0–3.9 pCi/L – Moderate risk (monitoring recommended)

  • 4.0 pCi/L or higher – Action level (mitigation strongly recommended)

The EPA action level is 4.0 pCi/L. At or above this level, radon mitigation is advised to reduce health risks.

Sonic Home Inspections explains results in plain language so you understand exactly what steps—if any—are needed.

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🏠 Radon Testing for Home Buyers

For buyers, radon testing during the home inspection period allows:

  • Negotiation of mitigation costs

  • Confirmation of a healthy living environment

  • Peace of mind before closing

Radon mitigation systems are effective and affordable—but testing first is essential.

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📝 What Happens If Radon Levels Are High?

If elevated radon levels are found, Sonic Home Inspections:

  • Clearly documents results

  • Explains health implications

  • Recommends professional radon mitigation

  • Helps buyers and homeowners understand next steps

Radon mitigation systems are proven to significantly reduce indoor radon levels when properly installed.

📍 Professional Radon Testing in NY & CT

Whether you are buying in Fairfield County or Westchester, don't leave your investment to chance.

Sonic Home Inspections is a New York State–certified radon testing laboratory (NYS Radon Lab ID #12119), providing accurate and reliable professional radon testing for homeowners and home buyers.

Serving Westchester County NY, Putnam County NY, and Fairfield County CT, Sonic Home Inspections uses professional-grade equipment to deliver dependable radon test results and peace of mind.

Schedule your radon testing with Sonic Home Inspections to ensure your home is safe for you and your family.

Book Online Get a Quote (914) 255-6510

Tags: radon test for home buyers NYS certified radon lab radon health risks radon testing New York radon testing Fairfield County CT certified radon professional Health & Safety