The use of which type of ventilators can dilute indoor radon concentrations effectively?

Heat Recovery Ventilators (HRVs) are particularly effective for diluting indoor radon concentrations because they provide a continuous supply of fresh outdoor air while simultaneously removing stale indoor air. The design of these units allows for the transfer of heat between the outgoing and incoming air, which means that they can bring in fresh air without significantly impacting indoor temperatures.

This process of regular air exchange is critical in managing radon levels since radon is a naturally occurring gas that can accumulate indoors. By introducing fresh air, HRVs help to reduce the concentration of radon gas within the living space, effectively minimizing health risks associated with long-term exposure.

In contrast, while standard fans, exhaust hoods, and natural vents can also contribute to air movement and ventilation, they may not be as efficient or controlled in their capacity to manage humidity levels and thermal comfort. They can help dilute radon to some extent, but HRVs are specifically designed for efficient air exchange and have proven benefits in air quality management, including the mitigation of radon levels.