What is the most common form of radon mitigation system?

Active Soil Depressurization is considered the most common form of radon mitigation system because it effectively reduces radon levels by actively drawing radon gas from beneath the foundation of a building and venting it outside. This method typically involves the use of fans to create negative pressure under the foundation, which helps to prevent radon from entering the indoor environment.

Passive systems, while beneficial, rely on natural pressure differentials and do not include mechanical components, which can limit their effectiveness in certain conditions. Ventilation enhancement can also reduce indoor radon levels, but it may not be as targeted or efficient as active systems in environments with high radon concentrations. Radon sump systems are less common and typically used for specific applications or in conjunction with other mitigation strategies.

By employing Active Soil Depressurization, homeowners can achieve a more reliable and consistent decrease in radon levels, ensuring a safer indoor air quality.