Radon: Key Messages and Resources when Selling or Buying a Home

RE/MAX Achievers 2 Offices in Collegeville & Pottstown Offering Real Estate Services
RE/MAX Achievers 2 Offices in Collegeville & Pottstown Offering Real Estate Services
Published on January 13, 2026

Radon and Radon Testing

  • Radon is a naturally occurring radioactive gas that can cause lung cancer. It can enter homes from the ground and build up to dangerous levels.
  • Radon is the second leading cause of lung cancer in the U.S., responsible for about 20,000 lung cancer deaths every year.
  • Radon-induced lung cancer can be easily prevented by testing homes and mitigating them when necessary.
  • Radon is colorless and odorless. Testing is the only way to know if you and your family are at risk from radon.
  • EPA and the Surgeon General recommend testing all homes below the third floor for radon.
  • Elevated radon has been found in every state, so testing is important wherever your home is.  

One in 15 U.S. homes are estimated to have elevated radon levels.

Millions of Americans have already tested their homes for radon.

Radon testing is inexpensive, quick, and easy. Learn how to find a radon test kit.

Radon Mitigation

  • If the radon level in a home is 4 picocuries per liter (pCi/L) or higher, EPA recommends fixing the home.
  • Fixing a home is straightforward and uses simple materials and technology. Installing a mitigation system costs about the same as many common home repairs.
  • When installed properly, mitigation systems reliably reduce indoor radon levels to below EPA’s action level.
  • Find a qualified radon mitigation contractor who can design and install a radon mitigation system that’s right for your property.
  • Radon mitigation can save lives and give homeowners peace of mind.

Radon and Real Estate Transactions

  • Radon notification and disclosure laws differ by state and locality.
  • New homes can be built with radon-resistant features.
  • Buyers can ask home sellers for radon test results and information about any radon mitigation system that may be installed.
  • Buyers can also perform their own tests.
  • REALTORS® can encourage sellers to test their home before putting it on the market and, if necessary, lower their radon levels. Short-term radon tests are available.
  • Most radon mitigation systems do not require major changes to a home and are about the same cost as other home repairs.
  • A radon mitigation system can boost confidence in the safety of your home.

Radon in Pennsylvania

How to Test Your Home

Testing is the only way to know if your home has elevated levels of radon. An easy-to-use home test kit can be purchased at hardware or home improvement stores for about $20 to $30. You may also hire a state-certified testing company. Because radon levels are often highest in the basement, placing your test there is a good idea. However, radon levels can also be high above ground, even in homes without basements, so the ground floor is also a good location to test

How a Radon Reduction System Works

Monitor the System Over Time

Periodically look at the U-tube manometer that has been installed on the PVC piping of your system to make sure the fan is running. The fan is running if the levels of fluid on each side of the glass tube are uneven. If the fluid levels on each side of the glass tubing are even with each other, the fan may not be working properly or may be off completely. In this case, you should call your installer to have them look at the fan and system.

The second aspect of monitoring your system is performing a radon test, generally in the basement and preferably during the heating season, once every two years.

How DEP Can Help

Newborn Testing Program

Through an EPA-funded program, hospitals give parents of newborn children a packet of information which includes a coupon for a free radon test kit from the DEP.

Test Results Confirmation: Free Kits

  1. All Pennsylvanians who’ve tested their homes or other buildings for radon and found screening levels greater than 100 picocuries per liter may receive a free short-term confirmation test kit from the DEP Bureau of Radiation Protection. For this free kit, please call 800-237-2366 or 717-783-3594.
  2. If an active (fan-powered) radon mitigation system has been installed in your home within the last year, you may receive a free, long-term radon test kit (Alpha Track Detector). Send:
  • Proof of system installation
  • Copy of post-mitigation test result below 4 picocuries per liter
    to:

Department of Environmental Protection
Bureau of Radiation Protection
P.O. Box 8469
Harrisburg, PA 17105-8469

Helpful Resources for Homeowners

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How RE/MAX Achievers Can Help You!

With talented and award-winning realtors, years of experience, and thousands of happy customers, you know that you can trust RE/MAX Achievers with all your home needs! Whether you’re buying or selling, RE/MAX Achievers is here to help. We know more than anybody the stress that comes with navigating the real estate market, and we don’t want you to face it alone! Everybody deserves the home they love, and we want to help you find it!

RE/MAX Achievers sold over $1 Billion Dollars in real estate during the last 5 years!  RE/MAX was voted 2024’s number one real estate brand. RE/MAX Achievers Broker/Owner, John E. Ohler has stated he “is so proud of our accomplishments thanks to the surrounding communities. RE/MAX is a household name!”  RE/MAX Achievers was awarded the 2022 RE/MAX President Club Award and the 2022, 2021, 2020, 2019, 2018 RE/MAX Achievement of Excellence Award!  RE/MAX was voted the 2024, 2023, 2022 MOST Trusted Real Estate brand and agents.  RE/MAX Achievers offers real estate services in 5 counties: Montgomery, Chester, Berks, Bucks and Philadelphia counties. There’s truly nobody more fit to help you with buying a home.

Call the Achievers today!

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