Allegro bus heat ducts from furnace to rear bedroom

[rv05busdrive]

We have an 2005 Allegro Bus and I have a situation that I am wondering if anyone else has or is experiencing the same issue. I have a critter which I believe is a chipmuck aka ground squirrel that likes my accommodations so much it built a nest in the basement wet area (tanks, pumps, etc) in doing so it removed insulation from pipes and the like and also devoured the heat duct fabric to a majority of the ducts that run through the basement. I have repaired or replace most but I am having a problem with the duct that runs from the furnace below the refrigerator to the rear bedroom All that remains of the duct that I can tell is the wire inside the duct which is glorified dryer vent pipe. I am at a loss as to how to run a new duct since you can not see the old one except for a few feet of it and can not reach it with the tanks and other equipment in the way. Anyone who has replaced or repaired this duct please give me your input, suggestions even advice on how to go about it.
Also, there are two ducts connecting to the register in the bedroom are both lines from the furnace or is one going somewhere else never seen that before.

[gemini5362]

You are so metallic inclined plane used to hold wood together.

I had to fish a piece of 1/4 plastic line through that area on my 2005 bus. To be honest from what I saw there is only one way to get to it. Disconnect your batteries, shore power, turn off your generator. It looks like the compartment you are talking about can only be accessed by removing the breaker panel under the refrigerator. I would tell you to just cut a piece of the wood out at the back of the refrigerator floor. But it looks like almost everything electrical in your coach goes through that cavity.

Maybe take that to an RV shop let them take the risk of pinched or cut wires. Make sure everything electrical works before you take it to them and then check it before you leave.

[rv05busdrive]

My floor plan has the furnace below the refer no circuit breaker panel that is located in the bedroom on the opposite side of the bus. I thought about using a fish tape after removing the duct from the bedroom to see if I can find it under the furnace.

[Melmoses]

The rear furnace not only heats the bedroom but has a duct that goes down to heat the wet bay. That is most likely the 2nd duct you see. In any case I would first try to fish a line to the bedroom from the heater using what is left of the old vent. To get to the second duct you have to remove the backboard of the wet bay and look up and to the right on mine. It is no easy job to replace ductwork on the rear heater.