Do indoor radon concentrations vary over relatively short periods of time?

Indoor radon concentrations do indeed fluctuate over relatively short periods of time. This variation can be influenced by several factors, such as changes in weather, ventilation rates, and the building’s pressure dynamics. For instance, during periods of heavy rainfall or snowmelt, the soil can become saturated, which may increase radon levels as the gas is pushed into the home. Similarly, home ventilation patterns can change due to the opening and closing of doors and windows, affecting radon accumulation indoors.

Given this understanding, asserting that indoor radon concentrations do not vary over short time frames does not align with the established knowledge of radon behavior. It is important for radon measurement technicians to recognize these variations, as they can influence the accuracy of radon testing and the strategies employed for radon mitigation in residential environments.