How does radon mitigation work in a Minnesota home?
Quick answer: A radon mitigation system uses sub-slab depressurization. A pipe is sealed into the basement floor or slab, and a continuously running fan draws soil gas from beneath the foundation and vents it safely above the roofline before it can enter living space. The fan creates negative pressure under the slab, intercepting radon. Most Bloomington homes can be mitigated effectively, and a follow-up test confirms the system has reduced levels below the action threshold.
Installation starts with sealing major foundation openings, sump pits, and floor cracks so the fan can maintain consistent suction under the slab. The vent pipe routes the gas up and out, usually through the exterior or up through the home and above the eave line.
A visible manometer, a small U-shaped gauge on the pipe, confirms the fan is running and maintaining pressure. Homeowners can check it at a glance, and an inspector will verify it during any future inspection of a home that already has a system.
Mitigation systems are durable but not maintenance free. Fans eventually wear out and should be checked periodically, and a new short-term test every couple of years confirms the system continues to perform as intended.
