What can be used to mitigate the threat of radon gas?

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Using a ventilation system is an effective way to mitigate the threat of radon gas in homes. Radon is a colorless, odorless gas that can seep into homes from the ground, posing health risks such as lung cancer with long-term exposure. A ventilation system works by actively changing the air in a home, reducing radon concentrations by allowing fresh outdoor air to circulate and replace the radon-laden indoor air.

Sealing cracks, while it may have some effect in minimizing radon entry, is not a standalone solution; radon can still find its way into a home through various pathways. Although air filtration systems can improve overall indoor air quality, they are not specifically designed to remove radon. Dehumidification systems help manage humidity levels in a home, but without addressing the source of radon, they do not significantly reduce radon exposure. Thus, a ventilation system is the most effective method among those listed for specifically reducing radon concentrations in residential spaces.