I think you're right. If it's there, there is no way to get to it.
For the last 16 hours, the SFC has been keeping the basement around 50.5% RH (on average).
It seems like there is a 6 or 7 RH% hysteresis in the Humistat.
There is more KW hour use than I like.. But, I think that will go down some, when the slab & walls starts to dry out more.
I did notice the noise last night. It's a bit loud, for a small house..
But, it might not be too hard to build a noise suppressor..
Santa Fe Optional Muffler Kit (4022561) | Jon-Don
Once I pick out a good install location for the unit.. Right now, it's in the way!
Since the summers seem to getting shorter, I'm not sure if this thing is going to worth the cost..
Not sure how much use it's going to get. I have to admit, it's working a lot better than the old one..
(Zenith 30-pint Dehumidifier ZD300) That was made for 1 room. Maybe 1 small room..