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SESK: Stuff Everyone Should Know · sesk.info/home-a-radon-fix99

How much can a radon reduction system cut radon levels in a home?

Up to 99%.

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  1. About 10%
  2. About half at best
  3. Up to 99% ✔

Why: Some radon reduction systems cut levels by up to 99%. Even very high levels can often be brought down to acceptable levels.

Huh, didn't know that: New homes can also be built with radon-resistant features, which are simple and inexpensive.

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References

Answer: Up to 99%. Some radon reduction systems cut levels by up to 99%. Even very high levels can often be brought down to acceptable levels.

  1. EPA: A Citizen's Guide to Radon (2016) www.epa.gov/sites/default/files/2016-12/documents/2016_a_citizens_guide_to_radon.pdf
    Some radon reduction systems can reduce radon levels in your home by up to 99%.
    Checked 2026-10-10.

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