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Radon Testing

At Onega & Sons Inspection Service, we understand the importance of ensuring the safety and well-being of your home and family. Radon, a radioactive gas that occurs naturally in soil and rock, can seep into homes through cracks and openings, potentially reaching harmful levels. As a leading provider of radon testing services, we are dedicated to helping homeowners in Harmony, PA and Cranberry Township areas detect and mitigate radon risks effectively.

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What is Radon?

Radon is a naturally occurring, radioactive gas that is invisible, tasteless and odorless. The greatest source of radon gas in indoor air or drinking water is derived from the soil under and around a home. 

An infographic showing the various ways radon enters into a home.

Simply put, radon comes from the breakdown of uranium inside the earth. The majority of homes in Western PA, whether slab or basement, are built on concrete. Although extremely hard, concrete is actually porous. Naturally rising radon gas is drawn into a house from soil directly under the home due to the lower level of the house being negative in pressure as compared to the soil. This negative pressure is mainly caused from air in the home being warmer than the air outside and escaping out from the top of the home. As a result, radon laden soil gas is drawn into the house through cracks and openings in the lower level concrete slab, foundation or crawl space.

It is important to note that radon is found in most homes in Western PA. However, radon levels can vary drastically from house to house. To ensure radon levels in your current home or potential property are at a safe level for you and your family, the Environmental Protection Agency recommends professional radon testing during the home buying process.

For an in depth Homebuyer's and Seller's Guide to Radon, please visit the Environmental Protection Agency's website via this link.

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Certified Radon Professionals

Onega & Sons Inspection Services is certified by the NRPP, widely recognized as the leading certification program for radon professionals; requiring bi-annual documentation of competence, expertise and performance to demonstrate skill, knowledge and professionalism in radon testing.

What Should I Expect During a Radon Test?

During a radon test, a monitor will be placed in the home, under "closed-house conditions," 48 hours prior to or following your home inspection.

Upon completion, a detailed report will be published detailing hourly radon readings within the home. The overall radon level is calculated from an average throughout the 48 hour testing period.

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What if the Radon Results are High?

The EPA recommends that you take action to reduce a home’s indoor radon levels if the radon test result is 4 pCi/L or higher. 


There are several methods to reduce radon in a home, the most popular being a vent pipe system and fan, which pulls radon from beneath the house and vents it to the outside. The cost of making repairs to reduce radon levels depends on how your home was built and other factors. Most homes can be fixed for about the same cost as other common home repairs.

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Why Choose Onega & Sons Inspection Services for my Radon Inspection?

  • Expertise. Our team at Onega & Sons Inspection Services consists of certified radon professionals with extensive knowledge and experience in radon testing and mitigation.

  • Certification. We adhere to industry standards and best practices, ensuring accurate testing and reliable results.

  • Timely and Transparent Reporting. You can expect prompt delivery of detailed reports that outline radon levels measured during the testing period and provide accurate interpretations of the results.

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Additional Questions?

Please don't hesitate to contact us through email or phone, we'll be happy to answer any questions you may have.

Call: (724)452-5025


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Schedule Your Radon Test Today

Ensure your home is radon-free with Onega & Sons Inspection Service. Contact us today to schedule your inspection!


Request an Inspection

Use the interactive scheduler below to request your inspection.



After submitting, our team will respond shortly to confirm your inspection time.

The Inspection

Our certified inspectors utilize advanced radon testing equipment to accurately measure radon levels in your home.

Prefer to speak to someone in person?

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