Originally Posted by 73shark
So it's not the furnace that is causing the excess moisture and condensation. Since warm air will hold more moisture, running a heater/furnace should reduce condensation. ....
Yes, right up until the point where that warm air comes in contact with cold surfaces, which makes it not warm anymore, and then it can no longer hold what it had been holding. And then the RV gods hear me bellow, "It's raining in my Interstate!" (in isolated spots).
I maintain a non-running but open Fantastic pretty much 24/7/365 in an attempt to minimize this effect. I have an Ultra Breeze covering it so rain can't get in. There's always a bit of air circulating up and out, but when temps are in 30's to low 40's, it's not pleasant to have a brisk flow, so I keep the place reasonably warm and condensation happens. I forgot to add wet dog to my previous list of situational aggravants. That doesn't help either.
Glad to hear they extended the NCV3s to 30 minutes on the recirc. Bet they did that because of negative user feedback on the T1Ns.