Pressure Differences Affect Radon Levels in Homes

September 30, 2025      

Radon is a colorless, odorless gas that seeps into homes from the ground—and one major factor that influences how much radon enters your home is air pressure differences.

When the air pressure inside your home is lower than the pressure in the soil beneath it, radon gas is drawn upward through cracks and gaps in the foundation. This effect becomes even stronger in the winter when windows are closed and heating systems pull air upward, creating a “vacuum” effect that pulls in radon from below.

Other factors that can create pressure differences include exhaust fans, fireplaces, and even weather patterns such as wind and temperature changes.

To reduce radon levels, a radon mitigation system is designed to balance these pressures by venting radon gas safely outside before it can enter your living spaces.

Understanding how pressure affects radon movement is key to protecting your home and health. Professional testing and mitigation ensure your radon levels stay within safe limits year-round.

Protect your home today—contact The Radon Guys for professional mitigation solutions!

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