What is a passive radon resistant system?
A passive radon resistant system pulls radon from beneath the home, carries it up through the home in a pipe, and exhausts it above the roof. It differs from an active system in that the active system includes a fan in the pipe as it goes through the attic. The fan in an active system operates continuously, pulling radon-laden air from the soil beneath the lowest floor. In a passive system, the natural rising of warm air through the pipe continuously exhausts a low flow of air and radon from beneath the lowest floor of the house.
