Dehumidifying house in Summer

[Guest guest]

I have one dehumidifier running constantly in basement and one on

first floor running constantly just to keep humidity below 50%. It

seems weird to have TWO dehumidifiers running constantly just to keep

humidity below 50%. It's only the beginning of summer. They are both

Whirlpools and I bought sizes stated as appropriate for house size.

I'm trying to decide whether to get an 'inline' dehumidifier, to put

in ductwork like Therma Stor. Down side is that I hope to move in a

year or so and isn't as easy to move with, as I would have to take it

out of system and patch up holes in ductwork, etc.

Does anyone use a stand alone that is powerful enough to keep humidity

low without running CONSTANTLY to just keep it barely below 50%? It

makes me think when it gets humid out in July and August it will not

be able to keep up.