[wolfandwhisky]

It almost sounds like the best way to go then, is to have the distiller in a separate location on a dedicated line. Put another way...

have a water line feed into a distiller that is in an accessible part of the house - say laundry room. Then feed a line from the distiller to the humidifier.

This provides the humidifier with distilled water, and keeps the distiller out of the humidor but still accessible for occasional cleaning.

This is much more complex than I thought it might be... the geek in me wants to do it anyways. The pragmatist in me wants to just do a cigar oasis type set up... ha ha.