Just reply your PM. I believe if you install the one I suggest, you can get
your RH above 40% for sure for your whole house (unless you have a very big
house).
It could take a while for it to reach that, but you can get there for sure.
The main difference between the home dopot one and the one I suggest is HD
one uses filter and waste a lot of water, the one I suggest does not require
filter and almost do not waste any water.