"Howie" wrote in message
...
I haven't heard of a Aprilaire type... what about the drum type? I'm not
that familiar with humidifier types, I've seen the old style plate types,
as
well as the drum style. I think I've seen the type where the air is drawn
into the unit through flexible vinyl tubing.

I don't care for the drum types. To prevent water from getting yucky, you
have to flush if daily(at least). The flush valve adds to the cost and that
makes the prices higher than the panel style humidifiers.