Can Opening a Window Reduce Radon?

Opening windows improves air circulation and ventilation, helping move radon out of the house and mixing radon-free outside air with indoor air. ... Running a window fan in a basement window reduces radon levels, but only if the fan blows air into the basement.

How do I reduce radon levels in my home?

In some cases, radon levels can be lowered by ventilating the crawlspace passively (without the use of a fan) or actively (with the use of a fan). Crawlspace ventilation may lower indoor radon levels both by reducing the home's suction on the soil and by diluting the radon beneath the house.

Should I open windows during radon test?

When performing a short-term radon test, ALL of the windows in a home need to be closed, per EPA protocol for short-term radon testing. ... Opening windows at the upper levels actually has the potential to increase radon levels during a short-term test.