I use a small 30 pint compressor dehumidifier. Most are made by the same few manufacturers and re-branded. I have tried the small Peltier they work, but only remove a few ounces of water in 24 hrs. They will not solve a humidity problem in an RV. I found a spot next to my shower where I can run the drain through the bottom of the trailer and not have to continually empty the collection tank.
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 65W solar panels