condensation

Open bath vent a good 3 inches should get rid of condensation if need be turn on vent for a few minutes. we have been out in the low 20's and were ok, so open vent a little more.

I do what Outbound does, and also have a problem with condensation on the rear window.  I just found an idea yesterday which I may try.  Get the 1" blue/pink foam from the Big Orange Store (I already have a sheet hanging around), and cut that to size.  Acts as a great blackout blind, and hopefully keeps the water vapor away from the cold window surface.  I wonder though if it would do better on the outside of the window to instead keep the windows warmer.

We bought a really small dehumidfier that we run at night ( as long as we have shore power).  It seemed to help with the condensation as the bed was getting very wet at the back window in our 175. 

Hey, Brin, that's a great idea! With all the rigs we've had we never even considered a dehumidifier. I'm gonna give that some serious thought, as we do quite a bit of winter camping.  

This A/C that I'm considering putting in has a "dry mode" (dehumidifier).  Although it can't do heat and dehumidify at the same time so that won't help much in the fall/spring.