I used one of the pelletier type in my last trailer. It will remove humidity, but not at a rate that you need. Maybe only 1/2 to a cup a day. I currently use a small 13 pint compressor type in my TT. I enabled the permanent drain function and connected a small ( 1/2" clear tubing with hose water hose connection) and ran it through the shower pedestal and then through the coroplast bottom. I don't keep trailer plugged in at home due to the number of severe storms so I added a separate 120V line ( the same route I used for the drain) just to run the dehumidifier. Works great even during humid Aug nights humidity stays low. If you have humidity issues when using the RV, try opening the vents a crack and keeping the air circulating. Be sure to open a vent or range hood when cooking, showering or washing dishes.
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 65W solar panels