[Sisterlimonpot]

From my limited research, I read that 20-40% is ideal for the whole house. That's a safe level to prevent mold growth and not too dry for people comfort. So I set it to 30%, just because it's in between.

The reason why I asked the question is because I have to figure out where to put my portable ac unit if the fan was going to be on constantly I dont want to place the ac under it. But if it's only going to be on periodically then its feasible to do so. The ideal place to put it is in the corner right under the fan, although it has a long enough exhaust hose that I can stretch it further away.

As for that exhaust fan, I'm satisfied with it, it's not completely silent, but I quite certain that once everything in the room is running you won't hear it. The good thing about it is that it uses a brushless CD motor which equates to low electrical cost.