During the summer, I had to replace the powered attic fan (which
wasn't even operating) because the wind sheared off the rain lid. I
replaced it with an "all-weather" model that has a humidistat for winter
use because I had a tiny bit of ice-dam like formations last spring. I
live in Wisconsin and have the humidistat set for 75%.
The problem is that right now, it is 95% humid outside with a temperature
of 28 degrees. Of course the fan is running right now, but it seems
Correct me if I'm wrong, but condensation is only going to occur if there
is a large difference between attic temperature/humidity and outside
So to me, it seems that having a single humidistat in the attic is just
dumb and will run the fan during unnecessary conditions.
Should I just disable the humidistat?