Normal radon mitigation sucks out the air from underneath a house's foundation.
What if I ran the fan in reverse to blow this same air outward instead of sucking it upward? It seems either direction should be effective, so I am thinking that we choose to suck upwards just to avoid pushing it out towards neighbors. If sucking is truly more effective, how much more effective is it (in terms of radon pCi/L)? I imagine the difference in effectiveness depends on the season, whether the house is cooling or heating, so please consider both seasons. Of course, measured data comparing both fan directions for both seasons would be the best!