Yes, nonmobile. It's installed on top of the furnace.
The only place I could run a drain line over to the sink would be up through the ceiling. But it would be ugly coming back down to the sink. And given that I'm not good at drop ceilings and it looks like it could fall down, I'm leery of messing with the ceiling. If that's the only option, I'm not fixing the humidifier.
The AC drain line is pvc, I think it's an inch in diameter. I have no idea how much water the humidifier puts out, it's never worked since I bought the house. The AC is a trickle. I don't think they'd be running at the same time. I also don't know if there's any concerns with ice build up outside in the winter. The gutters do get iced up, but they're also dealing with snow melt.
The utility room is on a slab. Outside from this stuff is the AC unit, which is in a rock bed. Low traffic area of the yard.