Radon levels can go up and down but tend to be highest during the winter months when your homes heat is on and the air is still. Since most people keep their windows shut during the winter, radon has know where to escape too which causes it to build up in your home. Actually, the best time to test for radon is i the winter because if it is present it is much more likely to show up in winter.

Why are radon levels higher during the winter?

There are a number of reasons why radon gas is at a peak in the winter. Below are our three main reasons.

  1. Still air. As mentioned above, the air is stagnant and has nowhere to escape too. This cause the presence of radon gas too build up. If you do have radon present in the home it is more likely to show up in winter.
  2. Ground is Frozen. Radon gas moves upward. When the ground is frozen it makes it harder for the Radon to penetrate in its natural course. So the radon then finds an easier path, through your warm comfortable home.
  3. Stack effect. Cold air escapes from your house through vents, drafty windows, and other openings at the top of your house during the winter. In the winter the air is pulled up from lower levels known as the vacuum effect. What does this mean for me?

So if you are questioning if your home has radon or maybe you wonder. Now is the time to test. If you have high radon levels during any season consider radon mitigation to reduce the levels. Radon mitigation can reduce radon levels consistently throughout the year to rid yourself of any seasonal variations.


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