[jhan]

Well, I spent about 30 minutes looking in the room and I can not find a round heating vent.
What I found was the intake for the floor mounted heat pump/AC on the side facing the slide, right under the bed. But the side facing the entry door, under the bed, there are 2 rectangular vents that look like the heating vents under the sink cabinet. Lifting the bed up, I found they are not connected to anything. Looking all around inside, I can not figure out how anything could be connected to it. There was no heating duct or any holes that look like it was patched. Looking from underneath, I don't see any heating duct can go under the bed either, since it's right where the engine is.
I guess the best thing I can do now is to figure out if I can tap into another duct and route it into the room. Someone must felt asleep while building this coach.
Anyhow, I'll have a year to get it done. The next trip I take that I think I'll need a heater will be the 2010 Winter Olympics in Vancouver.