indoor venting

We are roughing in a basement bathroom and I need help with venting. It will be very difficult to attach to a stack, so I am looking at AAVs and alternative options. Essentially, unless we rip out walls and go all the way to the ceiling with a new vent, I am left with two options: (1) AAVs, or...

I have a 2500 ft^3 basement utility room housing 2 hvac units and 2 heat pump water heaters. I am adding an additional washer/dryer to the room. I am considering venting the electric dryer directly into the utility room with the idea that the warmer moist air will allow the heat pumps to...