Radon mitigation fans & parts

When a sub-slab depressurization system is the fix, the inline radon fan is the heart of it — it pulls soil gas from beneath the slab and vents it safely above the roofline. Fan choice depends on your soil tightness and pipe diameter: tighter soils need higher-suction fans, looser gravel needs higher airflow. A U-tube manometer on the pipe confirms the system is actually pulling suction. Sizing a fan wrong is the most common DIY mistake, so match the fan to your conditions or have a certified mitigator spec it.