I walked around outside some today. Got the mail and checked the radon fan. I thought I heard sounds while sitting at the kitchen table reading my medical records. Note to self: kitchen chairs hurt my back and rear to sit on for an extended amount of time. The radon fan was fixed Friday and a better mesh cap was used. Wolfgag said that he will try to convince the manufacturer to cover it under warranty. If he can't, we have to pay for the fan, $115, but he will cover the labor.