CFerguson wrote:
+1 on the EvaDrys. Note that they make different sized units. I suggest checking out their website and seeing what fits your needs. Used properly, they work great, but realize that most RVs are sieves when it comes to humid air infiltration.
EvaDrys also have the benefit of not using any compressor which pumps a lot of heat into the air. And yes, they use a hose drain (note that it is an uncommon size so get a factory hose if you get one).
In our area if you can't pull 3-5 gallons of water out of the air in the first 24 hrs and 2 gallons/day after that it doesn't do much good. and the evadrys I've seen won't come anywhere near that. Only compressor driven units can pull that much water out.