Radon Education

Servicing Philadelphia, Chester County,
Montgomery PA, and Lancaster County

Looking for a professional radon testing company for your business or home with fast accurate results?

What is Radon?

  • Radon is a colorless, odorless, and tasteless radioactive gas that is formed naturally from the decay of uranium in the soil.
  • Prolonged exposure to high levels of radon can pose serious health risks, including an increased risk of lung cancer.
Professional Radon Testing Chester County, PA

Facts you may not be aware of about Radon

Radon gas exposure is a well-documented health risk. In fact, exposure to radon is the number two cause of lung cancer in the United States, and exposure has caused other respiratory issues as well. Radon gas is undetectable to any of our senses. Breathing in radon leads to the death of 15,000-22,000 people a year, falling only behind smoking in causing lung cancer, according to the Environmental Protection Agency. Fortunately, eliminating radon gas from homes is relatively easy and inexpensive compared to other dangers, but homeowners have to take the first step — radon testing.

Pennsylvania has the third-highest average radon level among all 50 states, trailing only Alaska and South Dakota. Pennsylvania’s shale soil means that more radon is naturally released from the ground and into people’s homes than other states.

When Should You Test for Radon?

  • Your living patterns change and you begin occupying a lower level of your home (such as a basement)
  • You are buying or selling a home
  • The last test is not recent, i.e. within two years and your home tested above 2.0 pCi/l
  • You have renovated or altered your home since you tested
  • You have a radon remediation system and you have not tested in 2 or more years

General Radon Testing Guidance:

  • Radon is found in both old homes and new homes, as it typically comes from soil gas
  • Houses in the same neighborhood can have radically different radon test results
  • Testing for radon in homes is a vital part of the selling and buying process
Professional Home Radon Testing Delaware County, PA
Commercial Radon Inspection Chester County, PA

Pennsylvania requires Radon Specialists to be certified.

Pennsylvania law requires that anyone who performs radon testing, mitigation or laboratory analysis activities must be currently certified by the Pennsylvania Department of Environmental Protection (DEP). Any person providing these radon services shall present to the client a current Department-issued photo identification card upon request.

If you have questions, you may contact DEP at the Bureau of Radiation Protection, Department of Environmental Protection, P.O. Box 8469, Harrisburg, Pa. 17105-8469 (717) 783-3594

PA Department of Health – Radon Division:

Why SIS – Saenz Inspection Services?

SIS has a qualified radon testing specialist who has undergone the proper and rigorous training needed for the task.

  • Our Radon Tester has the professional expertise in properly testing for radon.  The specialist is certified by the state of PA  and National Radon Proficiency Program (NRPP).
  • SIS uses Continuous Radon Monitors (CRM’s) to perform short term tests. We provide professional test results and reports. Our reports include a chart and hourly radon readings
  • SIS only performs testing and inspections, and not remediation, no conflict of interest.
  • The primary purpose of the Radon Certification Act and the subsequent PA Chapter 240 Radon Certification regulations is to protect the health and safety of the public and to protect the public from unqualified or unscrupulous persons.
  • We are a, veteran-owned business and residents of Chester County who aim to provide affordable radon testing so all residents can live safely
  • Discounts for first responders, active duty military, and veterans

Contact Us


  • 610-960-5895

  • 1172 Skelp Level Rd, Downingtown, PA 19335

  • sismoldinspections@gmail.com

  • PA Certification #3589